232 
REALIA §. 12. 
peripheriam anfractus ultimi et circa perforationem zonam fin- 
gentibus, ornata; spira conica, acuta; anfr. 7 planiusculi, ulti- 
mus basi filo-carinatus; apertura ovalis; peristoma simplex, 
purpureum, expansiusculum, margine columellari basi breviter 
angulato, canaliculato. — Longit. 8, diam. 5 mill.“ (M.) 
Hydrocena variegata Morel, in Rev. et Mag. Zool. XVIII. 1866. p. 63. 
Habitat Yacoas insulae Mauritii (cum Pupa palangula). 
* 
113. Ceramensis (Hydrocena) Pfr. (Coll. 35.) III. 179 (Omphalo- 
tropis). — Omphalotropis Ceramensis Wallace in Proc. Zool. Soc. 
1865. p. 413: Gilolo. — Martens Ostas. Zool. II. p. 160*). t. 4. 
f. 11. — Pease 1869. p. 124. — Omphalotropis bicarinata Martens 
in Monatsber. Berl. Ak. 1864. p. 118. (Pfr. III. 180.) — Pease 1. 
c. p. 142. — Ins. Ceram. 
114 . R. bifilaris (Omphalotropis) IVIousson. f 
„T. satis perforata, conica, striata, epidermide fugaci fusca 
induta. Spira acute conica, regularis; summo minuto, acuto, 
subattenuato; sutura valde incisa, non marginata. Anfr. rotun- 
dati, subclathratuli ; ultimus non descendens, rotundatus, in 
peripheria et ad perforationem, ab ea paulo remote, filis pro- 
duces cinctus. Apertura subverticalis, subcircularis, integra, 
intus cornea. Perist. expansiusculum, acutum, intus fortiter 
labiatum; marginibus lamina parietali soluta junctis, externo 
et basali circularibus, columellari non reflexo. — Diam. maj. 4, 
min. 3Va, altit. 6 3 / 4 mill. — Rat. anfr. 3:4. — Rat. apert. 
1:1.“ (M.) 
Omphalotropis bifilaris Mouss. in Journ. Conch. XIII. 1865. p. 183; XVII. 
1869. p. 353 **); XIX. 1871. p. 29. 
— — Pease in Journ. Conch. XVII. 1869. p. 146. 
— — Patel Catal. p. 124. 
*) „Testa conico-turrita, anguste perforata, oblique striatula et lineis I 
spiralibus subtilissimis confertissimis sculpta, brunneo -flavescens, nitidula, 
carina filiformi in medio anfraetu ultimo et altera circa perforationem mu- 
nita; anfr. 7, vix convexi, sutura carina anfractuum superiorum marginata, 
ultimus haud descendens; apertura diagonalis, piriformis, superne angulata; 
peristoma leviter labiatum, album, expansum, marginibus callo eonspicuo 
junctis, margine columellari infra subito auriculatim dilatato. — Long. 10, 
diam. maj. 6, min. 5; apert. alt. 5, lat. incl. perist. 4, excl. 3 mill. — Var. 
p. paulo major, fusca, fasciis nonnullis angustis albidis cincta, apice crocea. 
— Long. lO 1 /^ diam. maj. 7, min. 6; apert. alt^ 5*^, lat. inch perist. 5, 
excl. 3^/2 mill.“ 
**) Var. p. gracilior Mss. : paulo minor, gracilior, tenuior; anfractibus 
6723 apertura paulo minor. — Tutuila. — Var. y. teretijormis Mss.: anfrac- 
tibus rotundatis, carina peripherica deficiente, infera angulosa. — Samoa. 
