M i
128 OEDEE—HYMENOPTERA.
limd tarsi in the opposite sexes (fig-. male; fig. 8« , filmale), is noticed in the specific character given above.
The tarsal ungues have a small tooth at the base, and there is a small heart-shaped pulvillus between tlicm.
This is, I believe, the first species of this curious group, described as an inhabitant of the continent of
Africa, thus proving, in conjunction with the Australian insect represented in fig-. 2, that the genus is distributed
over all the four quarters of the globe, species from Europe, Asia, and America having previously been
described. S. (Fcenatopus) rujiceps Smith, is from Macassar, S. Indims Westw., as its name imports, from India ;
and in tlie British jMuseum is a species from Solomon's Island (New Hebrides), of which the following is the
character :—
S T E P H A N U S S J U : . O Ì I O N I S .
Niger ; capite utriuque linea alba pone oeulos, collo postiee transverse striato, metanoto arcolato, coxis
postieis transverse striatis, dimidio apicali femorum postieorum et basali tibiarum castaneo, tibiis antieis parum
dilatatis basi rufis ; tibiis tarsisque intermediis castaneis ; alis parum llavescentibus, venis omnibus mediis diseoidalibus
obliteratis ; abdomine in individuo unico perdito.
Expans. alar, antic, lin. 10^.
G E N U S — O P H I O N E L L U S . We s t w .
Genus anomalum, abdomine longo compresso curvato ut in Ophione, metanoto apice retuso, necnon alarum
venis discoidalibus et apicalibus obliteratis ut in Stephano, distinctum : aliis characteribus cum Ichnenmonibus
adscitis nonnullis, e magis aherrantibus, congruit ; caput rotundum convexum, angulis postieis aeutis, oculi magni
laterales ; antennte longaj filiformes, multi-artieulatas articulis 30-40 ; mandibulaa (tig. 3 a) oblongas dentibus
duobus apicalibus robustis aeutis a rma t a ; maxillao (fig. S i ) subbilobatffi; palpis 5-articulatis, articulis primo
secundo et tertio longis, quarto et quinto brevibus setosis ; mentum oblongum compressum basin versus angustum
(fig. 3 c), labium membranaceum parvum internum ultra apicem menti parum productum ; palpi labiales 3-articulati
articulis a;qualibns ; collare inconspicuum; mesothorax segmento antico magno conico punetato in medio
longitudinaliter sulcato ; scutellum parvum transversum ; metanotum magnum longitudinahter 7 carinatum, interstitiis
transverse striolatis, postiee attenuatum ; abdomen thoraee quintuplo longius, compressum curvatimi apice
deflexo, articulo basali seu pedunenlo elongato dimidio basali tenuiori ; seeundo longissimo, tertio, quarto, quinto
et sexto longis fere tequalilius, septimo minuto ; oviductus eum valvis duobus, brevis paullo recurvus ; pedes longi
tenuissimi ; alas delicatula;, antica; stigmate tenuissimo fere ad apicem alte extenso, cellula unica marginali, cellulaque
unica submarginali (e cellula prima ordinaria submarginali et prima discoidali eonjunetis formata) cellulaque
minuta discoidali, venis in regione apicali alarum obliteratis.
SPECIES I — O P H I O N E L L U S F E A G I L I S . We s t iv.
P I AT E X S I V , FIO. 3.
Niger : capite antice punctis duobus albis, mesothorace punetato, metanoto sulcato et transverse striolato ;
pedibus piceo-nigris, coxis pedum 2 anticornm basique tibiarum 2 posticarum alljis ; alis hj-alinis, parum irideseentibus,
venis graeilibus pieeis, abdomine glabro.
Long. corp. cum. abd. lin. 10 ; expans. alar, antic, lin. 7.
Habi t a t ; Amazonia (Bates) et Brasilia (Swainson). In Mus. Hopeiano Oxoni®.
GENUS—AULACUS. .burine.
The following descriptions of new species are supplemental to those published by me in the Third Vohime
of the First Series of the Transactions of the Entomological Society of London (p. 260), and in the First Volume
of the Second Series (p. 222) :—
FAMI LY—EVANI IDy E . 1 2 9
SPECIES 1—AULACUS NOBILIS.
(Westw. Trans. Eut. Soc. Lend. I S 6 8 , part iv. December, p. 3 2 9 . )
P LATE XXIV, Pio. 4.
Niger, nitidus: mesonoto valde gibboso, retuso, rugoso, et antice tuberculis duobus conieis porrcctis armato,
supra rufo-fulvo ; alis fnscis, violaceo-micantibus, stigmate nigro, omnibus macula trigona, paullo ante medium,
Fasciaque lata substigmaticali, hyalinis ; abdomine brevi clavato ; oviductu abdomine paullo longiori, valvulis
nigris. ? .
Long. corp. lin. 6 ; expans. alar. hn. I I .
Habitat ; Amazonia (Bates). In Mus. Hopeiano Oxonia;.
SPECIES 2—AULACUS FOEMOSUS.
(Westw. Trans. Ent. 80C. loc. cit. p. 330.)
PLATE XXIV, F IG. 0.
Elongatns, laste llavus, nigro variegatus : alis subhyalinis, stigmate nigro, nubilaque apicali anticarum
infumatis ; capitis vertice nigro, lineis (vel punctis) duabus llavis ; mesonoto transverse striatulo, macula trigona
antica, alterisque duabus dorsaUbus, scntcllo et metanoto maculis parvis nigris notatis ; abdomine fiavo, basi et
tasciis nigris ; pedibus flavis, postieorum duorum trochanteribus, Ijasi et apice tibiarum, tarsisque nigris ; oviductfis
valvulis nigris. ¡J et ? .
Long. corp. ^ lin. 6, ? lin. 7 ; expans. alar, antic. ¡J lin. 12, ? lin. 14.
Habi t a t ; Australia Australiori, Iilelbourne (Batewell). In Mus. Hopeiano Oxoniaj (olim nostro) et
Britann. (cum nomine MS . Smithiano supra usitato inseriptus).
S U B - G E N U S — A U L A C I N U S .
AULACUS (AULACINUS) JICEEENS.
(WBstw. Trans. Ent. Soc. loc. cit. p. 331.)
PLATE X X I V , F IG. 6.
Brevis, snbopacus, niger : capite subgloboso, antennis brevibus, fulvis, articulis 2 basali.bus et 2 apicalibus
nigricantibus; thorace brevi-ovato, antice subretuso, striatulo; alis subhyalinis, stigmate et venis nigris,
eellulis 4 submarginalibns distinetis, seeunda late trigona, apice supra truncate, tertia subquadrata, vena eellulam
sceundam claudeute eum vena seeunda recurrente continua ; venis alarum posticarum obsoletis ; pedibus
nigris,^ tibiis (nisi apice posticarum) tarsisque brunneis ; abdomine brevi, clavato ; oviductu abdomine breviori ;
valvulis nigris. ? .
Long. corp. lin. S J ; expans. alar, antic, lin. S J .
Habi tat ; Adelaide, Australia. In lilus. Hopeiano Oxonife.
The^ variation in the veins of the wings has rendered it necessary to propose a separate subgenus for
this species.
Genera duo inceHce seclis.
GENUS—NOMADINA.
(Westw. Trans. Eut. Soc. Lend. 1868, part iv. December, p. 328.)
(Jenus novum, e sectione Terebrantium ; Trigonalydi forsan proximum, Nomadam (Apidarum) quodammodo
simulans.
Corpus breve robustum ; caput transversum, lobo transverso antico, in quo insident antenna;, thoraee
brevioi-es, sat erassfe, 16-articulata; (fig. 7c), articulo primo brevi; ocelli 3, parvi; mandibula; (fig, 7 « ) lata;,
subquadrata;, fere plana;, 4-dentata; ; reliqua; oris partes fere obsoleta; (fig. 7 i ) ; palpi labiales brevissimi,
subconici ; thorax ovatus, collari supra ineonspicuo ; pedes breves, rol;usti, simplices, unguibus bifidis (fig. 7 d.
¡4