118 WHITE AVES ON MARINE INVEETEBRATA, ETC., 



/TEREBRATULINA UNGUICULA, Carpenter. Strait of Georgia, near Comox, in forty fathoms ; 

 one small living specimen. Discovery Passage at station No. 7, a large ventral 

 valve. Low tide, Johnstoue Strait, one small living specimen; and Johnstone 

 Strait at station No. 10, two small living specimens. 



The Terebratula unguicula of the late Dr. P. P. Carpenter was regarded as merely 

 a local variety of the European T. caput-serpentis by the late Dr. Thomas Davidson. 

 A series of adult and perfect examples of T. unguicula, dredged by Mr. James Rich- 

 ardson in 18*76 in the Strait of Georgia, was sent by the writer to Dr. Davidson, for 

 examination, in the fall of 1884. In a letter dated November 29, 1884, Dr. Davidson 

 writes : " The specimens named TerebratuHna unguicula are only a variety of T. caput- 

 swpentis. I will describe it in my monograph " (one on recent brachiopoda, then in 

 course of preparation) " as Terebratttlina caput-serpentis, var. unguicula, Carpenter. I 

 compared all your Vancouver examples very minutely with a number of European 

 specimens of Liune's species, and feel confident that T. unguicula is not a distinct 

 species." 



. LAQUETJS CALIFORNICTJS. Koch. Discovery Passage at station No. 7, one dead but perfect 

 shell and a large dorsal valve. Johnstone Strait at station No. 10, five living 

 adult specimens and several young. Race Passage, Johnstone Strait, two small 

 but living specimens. 



^TEREBRATELLA TRANSVERSA, Sowerby. (=T. caurina, Gould.) Low tide, Strait of Georgia, 

 many small but living and strongly ribbed specimens. Entrance to Malaspina 

 Inlet, at low water, one living specimen. Discovery Passage at station No. 7, 

 three small living specimens and one dead shell. Johustone Strait at station 

 No. 10, two adult living shells and one small one. Queen Charlotte Sound 

 at station No. 12, one small living shell, and at station No. 18, five small, living 

 specimens. 



At these localities, some of the specimens have strong, radiating ribs, while 

 others are almost entirely smooth, but there are intermediate gradations between 

 the ribbed and the smooth forms, which latter is the one represented by Sowerby 

 in the "Thesaurus Conchyliorum," as the type of T. transversa. 



LAMELLIBRANCHIATA. 



v PLAOUNANOMIA MACROSCHISMA, Deshayes. Entrance to Malaspiua Inlet, at low water ; 

 three small, living specimens attached to Ostrea lurida. Strait of Georgia at station 

 No. 2, two rather small, living specimens. Quatsino Sound, Vancouver Island, one 

 large and two small living shells. 



/ OSTREA LTJRIDA, Carpenter. Entrance to Malaspina Inlet, at low tide, two living speci- 

 mens. A number of good specimens of this species, which were said to have been 

 taken near Comox, were purchased in Victoria, Vancouver Island. Bradley Lagoon, 

 Blunden Harbour, Queen Charlotte Sound, on the mainland side, abundant. This 

 last is the most northerly locality yet recorded for oysters on the coast of British 

 Columbia. 



