SOLARIELLA. 321 



the ribs ; one or two additional ones often appear in the umbilical 

 opening, which is funnel-shaped and moderately large, but often 

 partially obstructed by the refiexed edge of the inner lip. The inter- 

 spaces between all the ribs are covered with close, slightly raised lines 

 of growth, and usually with traces of a thin epidermis. Aperture 

 somewhat quadrangular, large, lip thin. Animal with long tentacles 

 and large black eyes ; four large lateral cirri on each side, with a 

 group of four or five small intermediate ones ; snout with a broad, 

 bilobed, crescent-shaped expansion in front. Odontoi^hore without 

 a large lateral tooth between the inner and outer series, otherwise 

 much like typical Margarita. Alt. 14, diam. 15 mill. {Ve^n-ill.) 



Off Marthas Vineyard, 65 to 192 fms. ; of Newport, R. I., 85-325 

 fms. ; off Grenada, 416 fms.; Bay of Biscay ; between Hebrides and 

 Faroe Is. ; Mediterranean ; St. Thomas, W. I.; Fossil and Pliocene of 

 Italy and Sicily. 



Trochus ottoi Philippi, Enum. Moll. Siciliie, ii, p. 227, t. 28, f. 

 9, 1844.— Jeffreys, P. Z. S. 1883, p. 98.—Solariella ottoi Phil., 

 Dall, Blake Gasterop., Bull. M. C. Z. xviii, p. 381. — Margarita 

 regalis Verrill and Smith, Amer. Journ. Sci. 1880, p. 397 ; Trans. 

 Conn. Acad, v, p. 530, t. 57, f 37 ; vi, p. 254, t. 29, f. 14. 



The description and figures pertain to this species as dredged 

 living, and described by Verrill and Smith as M. regalis. 



S. VAiLLANTi Fischer. Unfigured. 



Shell umbilicate, conic ; whorls 7, planulate, the first costellate, 

 the rest ornamented with acute tubercles arranged in two spiral 

 cinguli ; last whorl bicingulate at the periphery, above provided with 

 a beaded sutural cingulas, beneath sculptured with 5 concentric line. 



Alt. 7, diam. 8 mill. (Fischer.) 



Portugal, 1224 meters. 



Trochus vaillanfi FiscuJ-iB,, Journ. de Conchyl. 1882, p. 50. 

 Said by Jeffreys to be a synonym of S. ottoi Phil. 



S. LUSiTANiCA Fischer. Unfigured. 



Shell umbilicate, orbicular-conic ; whorls 7, regularly increasing, 

 spirally delicately cingulate, decussated by very minute arcuate 

 costellse, with an acute prominent median carina ; last whorl 

 bicarinate, a little convex beneath, sculptured with concentric lines, 

 vanishing in the middle ; umbilicus funnel-shaped, acutely angulate 



21 



