281 
apertura magna, canali obliquo, recurvo; labro vix expanso, laqueato; alba, apice flave- 
scente. — Pse. 
Long. 23, diam. 8 mm. 
Cerithium cylindraceum Pease Amer. Journ, of Conchol. V p. 77. 
Hab. Paumotus. 
„Intermediate between C. columna and C. salebrosum.“ 
Cerithium (^Bittium} armillatum Carpenter, 
B. testa C. aspero simili; anfr. nuci. 2 laevibus, tumentibus, vertice declivi, coelato; 
dein anfr. 9 normalibus planatis, suturis impressis; adolescente seriebus nodulorum 3 spira- 
libus extantibus supra costas instructis, costis radiantibus circa 19 fere parallelis, seriebus, 
a suturis separatis, spiram ascendentibus; t. adulta costulis spiralibus, interdum 4, inter- 
calantibus; costulis radiantibus creberrimis; costis suturalibus 2 validis, haud nodosis ; basi 
elfusa, liris circa 6 ornata; apertura subquadrata; labro labioque tenuibus; columella vix 
torta, elfusa, vix emarginata. — Cpr. 
Long. — ? 
Ilab. California. 
„The sculplnre resembles Cerilhiopsis ; but the columella is pinched, not nolched.“ 
Cerithidea albivaricosa A. Adams. 
C. t. turrito-conica, apice acuta, solida, fusco-grisea, linea spirali luteola ad medios 
anfractus ornata, albivaricosa; anfractibus convexiusculis, varicibus numerosis, distantibus, 
alternantibus instructis, longitudinaliter costatis, costis nodulosis transversim sulcatis; an- 
fractu ultimo rotundato, basi spiraliter sulcato; apertura suborbiculari, antice sinuata; labro 
expanso, margine acuto rubreflexo. 
Long. — ? 
Cerithidea albivaricosa A. Adams Proc. Zool. Soc. 1854 p. 85. 
Philippinen. 
This species is easily recognized on accounl of the conspicuous while varices 
of the vvhorls. 
I. 26. 
19./X1. 98. 
36 
