CAl,LIOSTOMA-EUTROCHUS. 409 



bilicus deep and narrow, with flexuous walls excavated near the 

 carina, which is marginated with an opaque white band ; spiral 

 sculpture beginning at the umbilicus ; outside the carina, which is 

 simple, two strong broad subnodulous spirals separated by a deep 

 line, then fourteen or more equal smooth Hattish spirals with narrower 

 interspaces and obsolete spiral striulte here and there; then a smooth 

 or slightly striate peripheral space ; all the preceding straw-color. 

 Above the periphery two pink and one straw-colored large smooth 

 and rounded spirals, one smaller smooth one, then three large and 

 two intercalary smaller nodulous spirals separated from the suture 

 by a narrow smooth space. The interspaces are brown, the elevations 

 straw-coloi'. The early whorls have two or three smooth and one 

 or two nodulous spirals, the former remain constant with growth, 

 the latter increase in number. Radiating sculpture of flexuous in- 

 cremental lines, hardly visible. Aperture rounded, squarish, col- 

 umella white, thin, concave, a small notch at its biise. Operculum 

 yellow, multispiral, translucent, polished. Ty2)e specimen not full 

 grown. Alt. 14, diam. 18 mill. {Dull.) 



Off Cape Lookout, North Carolina, in 200 fnis. 



Calllostoma {Eatrochus) benedidi Dall, " Blake " Gasteropoda, p. 

 371, t. 32,f 7. 



This is a very handsome species, recalling the var. [)syc!ie of 

 Calliostoma bairdii, from which it is easily distinguished by its um- 

 bilicus and sculpture. (Dall.) 



C. ciNrTELLUM Dall. PI. 49, figs. 31, 32. 



Shell small, thin, pearly white with faint touches of pale brown, 

 seven-whorled, with a globular inverted minute nucleus and rather 

 convex base; spiral sculpture of two prominent sjnrals, one pe- 

 ripheral, simple, sharp, vhh occasional touches of brown ; against 

 this the suture is laid in the earlier whorls, while in the last whorl 

 it descends below it; the other spiral is above the periphery, and is 

 stronger and ornamented with (on the last whorl) about forty sharp 

 projecting thorn-like tubercles, each inclined a little forward, and 

 alternating brown and white. Between tins and the periphery the 

 space is excavated. Above these there are about four (on the 

 earlier whorls one or two) small raised spiral lines separated by 

 much wider interspaces, nodulated with small but prominent nodules 

 at the intersections with the radiating sculptui'e; all the sculpture 

 growing fainter, and intercalary fine lines appearing, toward the 



