OF CONCHOLOGY. ^^ 



— 418 3Iopalia acuta, Cpr. 



" Monterey " (Nuttall coll.) 

 Nuttall, disc. 

 1087 421 Acanthopleura scabra, Rve. 



Str. Fuca to Santa Barbara. 

 Nine living, 1. w. Nuttall, disc. 



— 423 IsclmocJiiton Magdalensis, Hds. 



Monterey to San Diego — Lower Cal. 

 Smitlisonian coll. 

 *1073 427 Lepidopleurus pectinatus, Cpr. 

 Santa Cruz to Catalina I. 

 Santa Cruz, common. Extreme 1. w. 

 518 428 Lejndopleurus Mertensii, Midd. 

 Str. Fuca to Monterey. 

 2 living, 7 — 20 fms., rock. Smitlisonian coll. 

 329 430 Traclijjdermon intei^sfmctus, Gld. 

 Puget's Sound to Monterey. 

 2 living, 1. w. ? 



— 435 Trachydermon Harhvegii, Cpr. 



San Francisco to Monterey. 

 Hartweg disc. 

 325 436 Trachydermon Nuttallii, Cpr. 



Str. Fuca to JNIonterey. 

 1 living, 20 ft., rock. Nuttall disc. 



— 437 Trachydermon Jlcctens, Cpr. 



Str. Fuca to San Diego. 

 Smithsonian coll. 



420 — 



Chitonid indet. 

 Not rare, living, 1. w. 

 857 441 Nacella instabiUs, Gld. 



Str. Fuca to Monterey. 

 Rare, dead on bch. Sta. Cruz, bch., dead, lives on algae ? 



416 442 Nacella insessa, Hds. 



Baulines Bay to San Diego. 

 16 dead, bch. Lives imbedded in algse, 1. w. 



1237 445 Nacella paleacea, Gld. 



Santa Cruz to Santa Barbara. 

 Santa Cruz, living, common, on narrow grass, 1. w. 



*344 446 Nacella triangularis, Cpr. 



Baulines Bay to Monterey. 

 4 dead, 20 — 30 fms. Probably lives on algse. 



