166 
Body 7'obust, left antapical horn very skort, most cornmonly 
robust , straight or slightly curved , tooth-like. 
Denne karakteristiske Art synes at være udbredt i det Røde 
og Indiske Hav. 
Villa 1 Vi i (rr) f 6 /5 (r) — VIII 13 /n-(r)v 5 / 5 (0 — IX a 
1 Vn (r) — IX 15 /u (rr) — X b 2 / 5 (r) — Xc'Vs (+). 
92. C. reflevum Cleve, Plankton-Organisins, 1900, p. 15, 
PI. VII, f. 8—9. 
Villa 6 /s (rr) 
Pig. 17. Ger at. robustum 
Ostf. & Schra. Ca. no /i. 
IX 4 / 5 (rr) — X b 2 / 5 (rr). 
93. C. robustum Ostf. & Schm.,jQ. sp. 
Body robust, horns rather short, right 
antapical horn parallel to apical horn , 
left antapical horn with a pronounceU 
flexure diverging at an acute angle; bo dy 
and horns with prominent lists. 
Denne ejendommelige Form har vi kun 
fundet i faa Individer i en enkelt Prøve. 
IX 15 /n (rr). 
94. C. curmcorne (Daday) Cleve, 
Plankton-Organisms, 1900, p. 14, PI. VII, 
f. 2, C. tripos var. curvicorne 
Daday, Természetrajzi Ftizetek, 
Vol. XI, 1887 — 88, PI. III. f. 4, 
8, 12, 14. 
IX 15 /u (r) — X a 16 /n (rr) 
— X 17 /n (r) — Xb 2 / 5 (r) — 
X c 3 /5 (rr). 
95. C. tenue Ostf.&Schm., n. sp. 
Horns very thin , apical horn 
rather lo7ig, antapical ho7'ns rather 
short, attenuated towa7'ds the ends, 
slightly diverging. Cell wall thin, 
Pig. 18. Cerat. tenue Ostf. & Schm- w i t j lout U sts ^ 
ca. 200 /i- 
