IMKKICAUIA. , 199 



fu-iius IMBRICARIA, Sclmiiijrlicr. 



niKtiiiLiuisluMl \)\ its Coiuis-likc slu'lls, Uic colmiicll:! with less 

 muiu'roiis i)lic';itioiis tlinn mostoftlu' spccios of (Ji/liiidrn. The 

 tninsition hetwoon this ycmis niul the latter is gradual, some oi" 

 the species placed in Cylindra, such as C. dactylus, being almost 

 cone-shaped. 



1, coNroA, Schnmacher. 1*1. 58, fig. 613. 



Yellowish or ash-color in darker and lighter clouds, encircled 

 by equidistant narrow brown lines, and mottled l)y quadrangular 



white spots. Length, 1 inch. 



Philippiiics ; Poli/iiesifC. 

 Gregarious in sand in slieltered places inside the reels. It is 

 the Mitra marmorata of Schuberth anil Wagner, and the t3'pe of 

 Swainson's genus GoiuvUx. 



I. Crouani, Crosse. PI. 58, tig. (n4. 



Violet Mesh-color, with irregular longitudinal whitish streaks; 



smooth. Length, 15 mill. 



Galapagos. 

 I. CONULUS, Lam. PI. 58, fig. 6T2. 



Smooth, distantly" spirally grooved at the base ; yellowish 

 brown, under a thin olivaceous epidermis, with revolving black- 

 ish or brownish lines. Length, 1-1-25 inches. 



Philippines, in mud at the roots of maugo trees. 



I. ciTRiNA, Reeve. PI. 58, fig. G*75. 



Smooth spire with rows of small tubercles; orange-brown, 

 stained with livid chestnut. Length, 1*5 inches. 



Habitat tmknoicn. 



I. CARBONACEA, Hinds. PI. 58, tigs. 616, 617. 



Spire smooth, body-whorl with a few engraved revolving lines 

 towards the base ; black, with traces of darker revolving lines. 



Length, '9 inch. 



Gape of Good Hope. 



Possibly equivalent to the preceding species. Yery probably 

 /. Rollandi, Bernardi (fig. 611), described from a somewhat worn 

 specimen, locality unknown, belongs here, although the spire is 

 somewhat different. 



