BIBLIOGRAPHY. 193 



Of Cadulus 1 1 species are enumerated 9 of which are new. 

 — C. colubridens W., N.E. of New Zealand, 700 f , grey ooze; C 

 vulpidens W., C. rastridens W., and C. sauridens W., Culebra Is., 

 St. Thomas, W.I., 39 f., mud; C. simiUiniiis W., Raine Island, 

 C. York, 155 f , sand, and W. of C. York, 6 f , coral sand; C. 

 ctirtw; W., and var. congruens W., Culebra Island, St. Thomas, 

 390 £, mud; C. obesus W., C. exiguus W., and C. ampulIaceus'W., 

 Culebra Island, St. Thomas, 390 f., mud. 



The Trochid^ embracing the genera Seguenzia, Basilissa, 

 Gaza and Bembix, the three last being established for the 

 reception of some of the peculiar species discovered in the voyage. 

 Of Seguenzia 4 species are mentioned, 2 of them are new : — 61 

 io7iica W., Culebra Island, W.I., in mud at 390 f., and S. trispinosa 

 W., Pernambuco, 675 f., mud; a new variety of S. formosa Jeff., 

 is also described — lineaia — from Pernambuco, in mud at 350 and 

 675 f The new genus Basilissa W., is erected for 6 species. — 

 B. lampra W., E. of Japan, 2050 f., grey ooze; B. simplex W., 

 off mouth of La Plata, 1900 f, grey mud; B. mimda W., off 

 Palma, Canaries, 1125 f, fine volcanic sand; B. alta W., Culebra 

 Island, St. Thomas, W. I., 390 f,mud, and off Perambuco, 675 f . 

 mud: a var. oxyioma W., is also from Pernambuco; B. stiperba 

 W., E. of C. York, Australia, 1400 £ grey ooze; B. costulata W., 

 off Culebra Island, W.I., 390 f., mud. A new genus Gaza is 

 characterized for a shell from Fiji — G. dcedala W., Kandavu, Fiji, 

 610 f , globigerina ooze. A new genus Bembix is also made for a 

 shell from Japan — B. ceola W,, Mosima, Japan, 345 f., sandy mud. 



New Texan Unio. — By R. Ellsworth Call. — American 

 Naturalist, May, i88t, p. 290, 



Unio Bollii, from Colorado river, Texas. It is most nearly 

 allied to U. quadrans, Lea. 



