ff
u
C. limbatüs Bréb. (Diat. de Cherbourg p. 12. F. 1. Greg. Diat.
of the Clyde p. 32. T. I I I . F. 55. Grun. in Wien. Verh. 1862. p. 440.
T. VIII. F. 4.). C. niagnus, orbicularis, costis abbreviatis ciro. 8 in
0,001", intervallis punctato-striatis (striis in 0 ,0 0 1 " oirc. 3 6 ); area
late ovata, subtiliter punotata. v. s.
Diam. ‘/i5— Vio'" = 0,005— 0,008".
Hab. in fundo maris et ad oras Scotiae, Galliae, Hispaniae, Dal-
matiae, Siciliae, insularum Joniarum.
C. b icruciatus Greg. (Trans. Micr. Journ. V. p. 78. T. I. F. 42.
Pritoh. Inf. 799.). C. mediocris, suborbicularis, costis validissimis in
0,001" ciro. 4 ; area quadrangula, in quovis latere prooessibus binis
conicis. n. v.
Diam. 0 ,0 2 7 " (teste Gregoryo).
Hab. ad oras Sootiae.
C. a d ria tic u s Grun. (in Wien. Verh. 1862. p. 440 T. X I. F. 8.).
C. subòrbioularig, valde flexuosus, costis radiantibus marginem versus
bifidis, brevibus in 0 ,001" 7—8, interstitiis subtiliter punctatis, area
media subquadrangulari maxima pliois 2 ourvatis instructa. n. v.
Diam. 0,0024—0,0034".
Hab. in fundo maris Adriatici (Lorenz).
C. minutus Grun. (in Wien. Verh. 1862. p. 438. T. VII. F. 27.).
C. parvus orbicularis valde flexuosus, area laevi (subtilissime punctata)
quadrangnlari dimidium fere valvae diametri occupante, linea media
nulla, costis radiantibus 18—20 in 0,001".
Hab. in mari Adriatioo (Lorenz).
C. noricus Ehrb. (Abh. 1841. p. 11. et 1845. p. 154. Eabenh.
in Hedwigia I. p, 52. T. IX. Alg. X. 381. et sub Xo. 421. Grun.
in Wien. Verh. 1862. p. 432 T. X. F. 4 et 5. C. punctatus Bleisoh
in Hedwigia I I . T. V. F. 1 — 6. ). Suborbicularis, ephippiiformi-
flexuosus (rarius convolutus) ; margine lato, quasi fenestrato; in te rstitiis
punctis uniseriatis; area oblonga oonoaviusoula. v. v.
Diam. 4/36— Vis'" == 0,0025—0,0051".
b. costatus Grun. (1. 1. F. 6. Camp. • costatus var. fi Sm. Diat.
T. VII. F. 52. Eabenh. Alg. sub Xo. 1441. C. punctatus Bleisch in
Hedwigia I I . p. 30.) , in te rstitiis punctis biseriatis vel nullis. Conf.
Fig. nostr. 11. a.
c. hibernicus Grun. (1. 1. Camp, hibernious Ehrb. Miorog. T. XV.
A. F. 9. C. costatus var. a Sm. Diat. T. VI. F. 52), in te rstitiis irregulariter
punctatis.
Hab. in paludosis et inter muscos ad declivitates húmidas prope
Salisburgum (Zambra, S a n te r), inter muscos prope Botzen (v. Hausmann),
ad Charas et Hypna prope Perdoneg Tyrolis au stralis, in laou
„Traunsee“ et ad Kufstein (v. Heufler) ; in rivulis circa Vöcklabrüek
Austriae (v. Morl), in Austria superiori (Schiedermayr) ; prope Meran
Tyrolis australis socio Melosira arenaria (Milde), ad Casaccio (C. Cramer) ;
prope Francofurtum ad M. (Fresenius); prope Degendorf Bavariae in
oonsortio Melosirae arenariao (Sendtner) ; circa Chemnitz Saxoniae
(Weioker); in lacu salso Thuringiae in oonsortio Baoillariae paradoxae,
Surirellae striatulae etc. (Bulnheim) ; prope Strehlen Silesiae (Bleisch) ;
in paludosis in te r Meesias prope Sainte-Croix, Bemont et Brevine durassi
(L esquereux), prope Falaise (De Brébisson); in pluribus locis
Angliae (W. Smith, Capron, Brightwell, Xorman).
Fossilis: prope Berolinum, in topho pumicoso rhenano ad montem
Hochsimmer ; in farina silicea prope Santafioram Italiae ; ad Down,
Mourne Mountains Hiberniae.
b. Area plus minusve an g u sta tä , sàèpius lin e a media percursa.
C. clypeus Ehrb. (Abh, 1841. p. 11. Microg. T. X. I. F. 1. Ktz.
Bao. p. 59. T. 2. F. V. 1— 6. Pritoh. Inf. p. 801. T. XVII. F. 516—518.
Eabenh. Alg. X. 1181. Sm. Diat. I I . 88.). Suborbicularis, ephippii-
formi-flexuosus ; costis radiantibus medio quasi interruptis ; area ob-
longo-rotundata, punotata, vitta media hyalina percursa notata.
Diam. ad ^¡n'“ = 0,0049".
Hab. in submarinis Angliae, e. gr. prope Breydon (W ig h am ),
Swansea (Okeden) ; in limo portuum prope Ostende, Cuxhaven, Bremerhafen,
in fu n d o )maris adriatioi (Dr. Lorenz), in lacu Peiaoni (Xeu-
siedler See, teste Grunowio) ; Ischia : in laou párvulo, ubi aqua calida
e balneis defluit. Fossilis prope Franzensbad Bohemiae, ad Santafloram
Italiae, Peru-Guano.
C. bicostatus Sm. (Diat. I I . p. 88. Eoper in Micr. Journ. II.
T. VI. F. 4. Grun. in Wien. Verh. 1862. p. 444. T. X. F. 1—S.).
Suborbicularis vel quadraugulus, ephippiiformis ; costis radiantibus medio
perfeote in te rru p tis , coronas duas formantibus ; interstitiis seriatim
punctatis ; area oblonga vel anguste lanceolata laevi.
Diam. - 1/40" ' = 0,0015—0,0022'
Hab. in laou Peisoni et in submarinis mari Baltici (Grunow); in
fundo maris adriatici (Lorenz) ; ad oras et in ostiis fluviorum Angliae
(Eoper, Bridgman, Capron, Xorman), Galiiae (De Brébisson).
C. pa rv u lu s Sm. (Diat. I. p. 30. T. VI. F. 56. Pritoh. Inf. p. 801