118 CYCLOPHORUS $. 17. 
nitidissimis, fusco-nigris, altera subsuturali eretacea cincta. Spira 
parum elevata; summo prominulo, corneo; sutura subappressa, 
non profunda. Anfr. 5!/, mediocriter accrescentes, satis con- 
vexi, ad suturam plani vel subconcavi; ultimus non descendens, 
supra concave-declivis, tum rotundatus, non angulatus, in 
pariete umbiliei aperti insigne filo-bicarinatus, intervallo pla- 
niusculo, striato. Apert. vix obliqua. (20* cum axi), subcir- 
cularis, superne angulata, intus fasciis translucentibus. Perist. 
rectum, acutum; marginibus perapproximatis, lamina tenui 
junctis; dextro supra areuatim protracto, angulose-arcuato; 
basali et columellari subsinuatis; hoc obtusiuseulo. Umbilicus 
perspectivus, !/, diametri subaequans. Opereulum corneum, 
tenue, paulo concavum, lamellose et lacerate arctispirum. — 
Diam. maj. 20, min. 17, alt. 12 mill. — Rat. anfr. 2:1. — 
RAt; àpert. 1:1.* (M) 
Cyclophorus delphinulus Mouss. in Malak. Bl. XVI. 1869. p. 180. 
—— o Pfr. Novit. conch. IV. p. 130. Nr. 835. t. 129. 
f. 7—10. 
Habitat in Columbia (Wallis). 
Obs. Species proxime affinis C. Cumingi Sow., sed minor et altior, 
praesertim colore et seulptura discrepans. 
* 
152. Montrouzieri (Cyclostoma) Souv. (Coll. 58.) III. 73. — Gas- 
sies Faune Nouv. Caléd. p. 74. t. 2. f. 7. — Ins. Art Novae Ca- 
ledoniae. 
153. C. Hidalgoi Crosse. 7 
T. umbilicata, conoideo-depressa, solida, crassiuscula, sub 
epidermide fulvo-castanea, sublaevi, nitida, sordide albida; spira 
parum elevata, vertice subplanato, roseo-violaceo; sutura im- 
pressa; anfr. 4!/, modice convexi, ad suturam depresso-planati, 
primi 2 decorticati, laeves, roseo-violacei, penultimus spiraliter 
obsolete striatus, ultimus teres, sublaevis, lineis spiralibus, 
numerosis, fuscis obscure cinctus, subtus circa umbilicum latum, 
profundum, pervium rugis longitudinalibus, subito evanidis, 
peculiariter impressus; apert. obliqua, irregulariter rotundata, 
squalide albida, intus livida; peristoma simplex, rectum, cras- 
siuseulum, marginibus approximatis, callo brevi junctis. — 
Operculum eorneum, rotundum, pagina externa concaviuscula, 
lamellosa, interna medio papillata, cingulo concavo papillam 
cireumcingente. — Diam. maj. 27, min. 23, alt. 12 mill; 
apert. 11 mill. alta, 10 lata.* (C.) 
Cyclophorus Hidalgoi Crosse in Journ. Conch. XIV. 1866. p. 354. t. 14. f. 4. 
Habitat in republiea Aequatoris. 
* 
