CYCLOPHORUS.—Ptate XI. 
typical form as the smaller C. lingulatus, of which Mr. 
Cuming collected so many well-marked varieties at the 
Philippine Islands. 
Species 47. (Fig. a, 6, Mus. Cuming.) 
CYCLOPHORUS LURIDUS. Cyel. testa modice umbilicatd, 
subdepresso-turbinatd, tenuiculd, pellucido-fulvd, pur- 
pureo-fusco tincté, immaculatd, anfractibus spiraliter 
carino-liratis et striatis, superné declivi-conveuis, ad pe- 
ripheriam obtusé angulatis ; apertura fere circulari, 
labro vie reflexo. 
THE LuRID CycLorHorus. Shell moderately umbilica- 
ted, somewhat depressly turbinated, rather thin, trans- 
parent, fulvous, tinged with purplish-brown, un- 
spotted, whorls spirally keel-ridged and striated, 
slopingly convex round the upper part, obtusely 
angled at the periphery; aperture nearly circular, 
lip scarcely reflected. 
Cyclostoma luridum, Pfeiffer, Pro. Zool. Soc. 1852, p. 63. 
Cyclophorus luridus, Pfeiffer. 
Hab. >? 
This appears to me to be an obscure state of some 
better developed form, yet I cannot refer it to any other 
described species. 
