QUEEN CHARLOTTE ISLANDS. 87 B 



Gasteropoda. 



Mangelia? sp. unit. One worn specimen. Tertiary fossils. 



Nassa, sp. Unlike any of the living species on the N. "W. coast. 



Lunatia ? sp. Test exfoliated. 



Trochita, or Galerus. Test exfoliated. 



Crypta adunca, Sby. One specimen ; undistinguishable from the 

 living species. Mr. Gabb (Pal. Cal. vol. 2, p. 82,) says that 

 this shell occurs in the Pliocene and Post Pliocene of Cali- 

 fornia. 



LameUibranchiata. 



Solen, sp. One fragment of a large species. 



Siliqua — Possibly the young of S. patula, Dixon. Two examples. 



Standella — Very like S. planalata, Con., and S. falcata Old., but 

 smaller than either. Several specimens. 



Macoma nasuta, Conrad. Two or three specimens. According to 

 Gabb. (Pal. Cal. vol. 2, p. 93) this recent species occurs also 

 in the Upper Miocene, Pliocene and Post Pliocene of Cali- 

 fornia. 



Mercenaria — Mr. W. H. Dall thinks this shell is closely related 

 to his M. Kennicotti, from Alaska. 



Ckione, sp. undt. Two specimens. 



Tapes staminea, Conrad. The most abundant shell in the collec- 

 tion. It is abundant, in a living state, on the N. W. coast, 

 and Mr. Gabb says that in California it is found in the Post 

 Pliocene, Pliocene and Miocene. 



Saxidomus, species undistinguishable. The outer layer of all the 

 specimens, which are not numerous, is entirely jxfoliated. 



Cardium, one exfoliated valve. Appears to resemble C. Islandicum. 



Cardium. Several valves of a species, which may be referable to 

 C. blandum, Gld. 



Area microdonta, Conrad. An extinct species, found so far only in 

 the Miocene and Pliocene of California. Two specimens. 



Axinsea. Possibly a form of A. patula, Conrad, but barely distin- 

 guishable from the smooth form (var. subobsoleta Carpenter) of 

 the living A. septentrionalis, Middendorf, of the N. W. coast. 

 Four single valves. 



Throughout the whole extent of the great Masset Inlet, the rocks Volcanic rocks 



° ° . of Masset Inlet. 



exposed appear to be those of the Tertiary, and, with the exception ot 

 those seen on the Ma-min Eiver, all of volcanic origin. It will be un- 

 necessary to do more than explain their general character. The whole 

 western portion of the first expansion of the inlet shows a preponder- 

 ance of dark-brownish or greenish-brown rocks of fine grain, which 

 may be named collectively basalts, though no perfect columnar struc- 

 ture was . observed. These are associated with some amygdaloidal 

 layers. Near the entrance to the upper expansion of the inlet, and 

 also at one place on the north shore, a few miles west of the Ain Eiver, 



