180 BULLETIN 91, UNITED STATES NATIONAL MUSEUM. 



Family ACANTHOCHITIDAE. 



Genus ACANTHOCHITES Risso. 

 ACANTHOCHITES GARNOTI Blainville. 



Cat. No. 173, U.S.N.M., four specimens collected by William Stimp- 

 son on the North Pacific Exploring Expedition at the Cape of Good 

 Hope. In addition to these there are five lots in the collection of the 

 United States National Museum from Port Alfred, as follows : Cat. No. 

 186909, three valves (Coll. No. 279); Cat. No. 187139, six valves 

 (Coll. No. 685); Cat. No. 249819, three specimens (Coll. No. 1091); 

 Cat No. 249821, two specimens (Coll. No. 1093); Cat. No. 249824 

 three specimens (Coll. No. 1096). 



ACANTHOCHITES CARPENTERI Pilsbry. 



Cat. No. 250605, U.S.N.M., contains a specimen from Port Alfred 

 (Coll. No. 1478). 



Family CHITONIDAE. 

 Genus CHITON Linnaeus. 



CHITON TULIPA Quoy and Gaimard. 



Cat. No. 19300, U.S.N.M., three valves from the Cape of Good 

 Hope. Cat. No. 110222, U.S.N .M., three specimens from the Cape 

 of Good Hope. Cat. No. 110218, U.S.N.M., two specimens from the 

 same locality. Cat. No. 110250, one specimen from Algoa Bay. In 

 addition to these, there are four lots in the collection of the United 

 States National Museum from Port Alfred, as follows: Cat. No. 249825, 

 six specimens (Coll. No. 1097) ; Cat. No. 249826, three specimens (Coll. 

 No. 1098); Cat. No. 249827, one specimen (Coll. No. 1099); Cat. No. 

 186906, one specimen (Coll. No. 276). 



CHITON, species? 



There are valves of two lots of Chitons, which we are unable to 



place, in the collection from Port Alfred, as follows: Cat. No. 250622, 



U.S.N.M. (Coll. No. 1495); Cat. No. 250623, U.S.N.M. (Coll. No. 



1496). 



Class SCAPHOPODA. 



Order SOLENOCONCHA. 



Family DENTALIIDAE. 

 Genus DENTALIUM Linnaeus. 



DENTALIUM STRIGATUM Gould. 



Plate 44, fig. 5. 



Dentalium strigatum Gould, Proc. Boat. Soc. Nat. Hist., vol. 7, p. 166, 1859. 



Shell moderately curved, white. Marked by 13 strong equal and 

 equally spaced longitudinal cords, the spaces between which are 

 marked by 9-1 1 fine incised lines. In addition to this longitudinal 

 sculpture the entire surface is crossed by very fine lines of growth. 



