TOPS AND TURBANS 



239 



has been dredged in moderately deep water off Cata- 

 lina Island. 



Solariella oxybasis^ Dall, the Pointed Solariella, 

 Figure 238, has an acute spire, a small umbilicus, and 

 an angulated aperture. Its altitude is 13.5 mm., and 

 it was dredged off the Santa Barbara Islands. 



^urcicula hairdli^ Dall, Baird's 

 Turban-shell, Figure 239, is one 

 of the finest deep-water species 

 that has been discovered re- 

 cently. The shell is large, thin, 

 somewhat eroded at the apex 

 and covered elsewhere with a 

 light yellowish-brown epidermis, 

 slightly inclined towards green. 

 Many specimens were obtained 

 by the "Albatross" expedition 

 off San Clemente Island, in water 300 to 400 fathoms 

 deep. The figure represents a specimen of average 

 size, but some are quite a little larger. 



Gibbula canfieldi, Dall, Canfield's 

 Turban-shell, Figure 240, is an ex- 

 tremely rare shell. In fact, until re- 

 cently, only two specimens were 

 known; one of which was collected 

 at Monterey by Dr. Dall, and the 

 other by Mr. Button, of Oakland. 

 It occurs also as a fossil. Possibly some reader of 

 this book may discover it anew. The color of the 

 shell is pearly, with bronze-yellow pencillings ar- 

 ranged obliquely to the suture. The height is ten 

 millimeters. 



Fig. 239 (*) 



Fig. 240, X I (*) 



