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the presence in the peristome of fine acerates; the triradiates have
their arms straighter than those figured by Hackel for his species,
but their forms and dimensions are about the same in the two
species.
56. Leuconia echinata.
Leucandra echinata, Schuffner, Jenaisch. Zeitschr. xi. p. 411, pi. xxiv.
fig. 4.
A compressed purse-shaped specimen, witb tbe mouth-opening
lost. The outer termination of the acerate is slightly enlarged ju st
before the point, forming a hastate apex, not noticed by Scbuffner,
who only says tb at tbe spicule is “unequally pointed at the two euds.”
The specimen measures 20 millim. iu greatest diameter, wbereas
Schuffner’s did not exceed 10 millim.
Hah. Darros Island, Amirante group, 22 fms.
Distrihution. Mauritius (Schuffner).
ALPHABETICAL INDEX.
aaptus (Ancorina), 627.
abbreviata (Nursia), 185,
253.
abnormis (Ooralliophila),
497.
abnormis (Fusus), 497.
abruptispicula (Olado-
chalina), 373.
abyssi (Chondrocladia),
433.
abyssi (Halichondria),
433.
abyssicola (Cladorrhiza),
433.
Acaharia, 361.
Acanthella, 375, 463.
Acanthochites, 83.
Acanthocliiton, 83.
Acanthogorgia, 336.
acantholepis (Eupagurus),
267.
Acanthopleura, 81.
acanthostephes (Murex),
43,44.
Acarnus, 375,453,588.
Acasta, 322.
Acervochalina, 373, 398,
587,604.^
acervus (Ecionemia), 471,
627.
acervus (Stelletta), 471,
583, 589, 627.
Achæus, 188, 516, 520,
570.
Achelia, 323.
Achelous, 230, 518, 538,
573.
Actæa, 209,517, 528, 571.
Actæodes, 517, 530, 571.
Actinocucumis, 148.
Actinometra, 166.
Actumnus, 225,517, 533,
572.
aculeata (Clathria), 375,
443.
aculeata (Galathea), 278.
aculeata (Spongia), 399.
aculeatus (Chlorinoides),
182,193.
aculeatus (Octopus), 35.
aculeatus (Paramithrax),
182,193.
aculeiformis (Conus), 36,
37.
acuta (Acanthella), 463.
acuta (Anthenea), 175.
acuta (Littorina), 60.
acutangulus (Conus), 487.
acutidens (Panopeus),
213.
acutinodulosum (Oeri-
thium), 501.
acutinodulosum (Ehino-
clavis), 501.
adamsi (Uintilla), 106.
adelaidensis (Chiton), 79.
adeonæ (Antedon), 155,
156.
adeonæ (Comatula), 156.
admete (Thalamita), 183,
230, 540.
adspersus (Cratopus),
676.
adustus (Chicoreus),
491.
adustus (Murex), 491.
Æga, 303.
Ægialitis, 27.
æquilibra (Caprella),
188, 320.
Æsaous, 26.
æthiopica (Phasianella),
504.
oethiopicus (Grapsus),
645.
æthiopicus (Paohygrap-
sus), 545.
affine (Goniosoma), 233,
234.
affinis (Achæus), 181,
188.
affinis (Ooenobita), 655.
affinis (Eucrate), 243.
affinis (Myra), 184, 250.
afilnis (TornateUa), 86.
africana (Littorina), 60.
agminata (Hymeniacidon),
375, 466.
Akera, 87.
alba (Gygis), 485.
alba (Tellina), 100.
alba (Reniera), 408.
alberti (Scintilla), 107.
albescens (Halichondria),
370.
albicilla (Nerita), 503.
albina (Oytherea), 95.
albitincta (Melitodes),
330, 356, 357.
albivarico.sa (Ranella),
56.
albiventer (Zosterops),
17.
albiventris (Monarcha),
15.
albiventris (Piezorhynchus),
15.
albiventris (Zosterops),
18.
albocaudata (Columbella),
495.
albomaculata (Cypri-
dina), 188, 321.
albonotata (Actinometra),
165.
alboscutellatus (Cratopus),
576.
albovaricosum (Ceri-
tbium), 601.
albula (Terebra), 491.
Alcyonaria, 327, 578.
Alcyonium, 332.
aldabranus (Turtur), 484.
Alectrion, 49.
alexandri (Salmacis), 118,
119, 171, 172, 177.
Alexella, 334.
algida (Nassa), 48.
aliformis (PeUina), 374,
412.
Alpheus, 284, 519, 561,
575.
alternans (Actinometra),
155,169.
alveolata (Purpura), 50.
amaryllis (Balanus),
188, 321.
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