376 



shallowly concave superior border behind. Their test is comparatively 

 thick and neither minutely granulated nor punctate. 



CUSPIDARIA SUCIENSIS. (N. Sp.) 



Plate 40, fig. 2. 



Shell rather small, moderately convex, somewhat compressed, nearly 

 twice as long as high and very inequilateral. Anterior side rounded, 

 longer and much broader than the posterior side, which is abruptly and 

 somewhat concavely contracted both above and below ; ventral margin 

 strongly convex, most prominent at the midlength ; superior border, 

 straight and horizontal behind the beak, which is incurved, slightly 

 recurved, and placed behind the midlength ; posterior umbonal slope 

 faintly angulated. 



Surface concentrically striated ; test very thin. 



Hinge dentition and muscular impressions unknown. 



Sucia Island, Dr. 0. F. Newcombe, 1894 : the specimen figured, which 

 is a perfect cast of the interior of a right valve, with small portions of 

 the test preserved. 



Dimensions of the specimen : maximum length, not quite fourteen 

 millimetres ; greatest height, nine mm. and a half. 



This little shell is provisionally referred to the genus Cuspidaria, on 

 account of its cuspidate posterior extremity and extremely thin test. 



Tellina occidentalis, Whiteaves. 



Tellina (Peronwa) occidentalis, Whiteaves. 1879. This vohiine, pt. 2, p. 144, pi. 17, 



figs. 11 and 11 a ; bvit not, Tellina occidentalis, Morton, 

 1842, which is a Lucina ; nor Thracia (?) occidentalis. 

 Meek, 1857. 



Tellina occidentalis, Whiteaves. 1896. Trans. Royal Soc. Canada for 1895, Second 

 Series, vol. i, sect, iv, p. 126. 



" The specimens from Gabriola Island and the Nanaimo River, which 

 the writer formerly supposed to be referable to Thracia occidentalis, 

 Meek, prove to be distinct from that shell, which Mr. Stanton states has 

 a pearly lustre and other characters of the Anatinidse." (Op. cit., 1896.) 



Tellina Nanaimoensis. (N. Sp.) 



Plate 46, fig. 3. 



Tellina (Peronceoderma) Mathcwsoni, Whiteaves. 1879. This volnme, pt. 2, p. 143 ; 



but probably not Tellina Matheiosoni, Gabb. 



Shell strongly compressed, thin, the thickness through the closed 

 valves being not much more than a third of their height, broadly sub- 



