CERION, GROUP XII. 269 



ous flames. Spire perceptibly tapering above, apex obtuse ; whorls 



10, nearly flat, the last plicate at the base. Columella obsoletely and 

 deeply toothed ; parietal fold moderate, deeply placed. Aperture 

 semi-oval, livid brown inside; peristome thickened, reflexed, the mar- 

 gins converging above. Length 24, diam. scarcely 10 mill.; aperture 

 9 mill, long, 8 wide " (Pfr.). 



Bahamas : Fortune Island (John B. Henderson, Jr. ; Chas. T. 

 Simpson). 



Pupa marmorata PFR., Zeitschr. f. Malak., 1847, p. 83; Monogr. 



11, p. 323; iii, p. 539 ; iv, 658; vi, 290 KCSTER, Conchyl. Cab., 

 Pupa, p. 159, pi. 19, f. 10-12? SOWB., Conch. Icon., pi. 2, f. 10. 

 Pupa chrysalis var., DESH. in Fer., Hist., pi. 156, f. 7, 8. Cerion 

 marmoratum Pfr., HENDERSON, Nautilus xv, p. 85, pi. 5, f. 3, 4 

 (Dec., 1901). 



This beautiful species is well distinguished by its elegant coloration 

 of irregular blackish-chestnut or pale chestnut stripes on a snowy 

 ground, the comparatively smooth surface, which typically shows only 

 faint growth-lines except at the base, which is usually plicate, and 

 the rather long, ovate mouth, which is very dark within. 



The contour is generally tapering, though cylindric specimens 

 occur. Sometimes the last two or three whorls are finely and closely 

 striate, the striae varying from merely perceptible to moderately 

 strong. The coloration seems unusually constant in the 38 examples 

 before me, but in one lot of seven specimens, two are white, like (7. 

 incanum. The size varies, as usual. 



Length 31J, diam. 10 mill. 



Length 28, diam. 10 mill. 



Length 25, diam. 11 mill. 



Length 2fJ, diam. 9^ mill. (Fortune I.) 



Length 20, diam. 7^ mill. 



Length 16^, diam. 7 mill. 



The locality has hitherto been uncertain. I have seen specimens 

 labeled < ; Cuba," " St. Thomas," " Porto Rico," " Cat Island," etc., 

 but Messrs. Henderson and Simpson have recently collected typical 

 specimens on Fortune Island, a small islet of the Crooked Island 

 group; thus fixing its habitat. 



One of the specimens from Fortune Island before me, referred by 

 Henderson to marmoratutn, is finely and sharply striate throughout, 

 even on the cone of the spire. It thus approaches close to O. eximium. 



