SOLARIELLA. 315 



Shell broadly umbilicated, whitish-pearly, thin, conoidal ; whorls 

 )'>, convex, separated by gradate suture, ornamented with oblique, 

 dense regular radiating costellae, and two spiral lira? on the lower 

 part ; last whorl ventricose, radiately costellate above, with three 

 acute elevated median spiral cinguli, beneath with obsolete con- 

 centric striae; umbilicus wide, carinated at the periphery, plicate, 

 denticulate; aperture subcircular. 



Alt. 5, diam 5 mill. (Fischer.) 



Gulf of Gascogne, 896-1226 meters. 



S. LAMELLOSA Verrill & Smith. PL 57, fig 14. 



Shell small, fragile, conical, canaliculate, with a wide umbilicus. 

 Whorls five, angulated and carinated below the middle, swollen just 

 below the suture, which lies in a deep channel ; they are crossed, 

 above the peripheral carina, by numerous elevated, thin, oblique 

 ribs, which rise into lamellae near the suture, where they join the 

 carina forming small nodules; between the ribs are fine parallel 

 lines of growth and sometimes a few fine revolving lines. Below 

 the periphery, in line with the posterior edge of the lip, there is a 

 smaller, plain, angular rib, and around the umbilicus there is a 

 strong nodulose rib. Between these ribs, the base is covered with 

 fine revolving lines. Within the umbilicus are radiating raised 

 lines which cross two or three small revolving ribs. Aperture 

 rounded, with angles corresponding to the ribs. 



Alt. 3, diam. 3 mill. (Verrill) 



Off Martha's Vineyard, in 115 fms. ; Gulf of Mexico 287-2805 fms. 



Margarita lamelloxa VEKRILL and SMITH, Am. Journ. Sci., 3d 

 series, vol. 20, p. 397 ; Trans. Conn. Acad., p. 530, t. 57, f. 38. 

 Solariella lamellosa V. & S., DALL, ' Blake ' Gastrop., p. 379. 



Constantly smaller and differently wrinkled from S. amabilis. 



(Ball.) 



S. ^EGLEES Watson. PL 66, figs. 18, 19. 



Shell broadly conical, high, with a very large umbilicus, orna- 

 mented with rows of tubercles, carinated. Sculpture : spirals 

 there is a row of small round pointed tubercles a little below the 

 suture, the carina is double, formed by two rather remote tubercled 

 threads, the lower of which runs to the outer lip. Below this one is 

 a broadish furrow and slightly beaded thread, which toward the 

 mouth projects so as to become a third carina. The center of the 

 base has another slightlv beaded thread; and another formed of 



