64 THE NAUTILUS. 



NEW SPECIES OF TERTIARY MOLLUSCA FROM VANCOUVER ISLAND. 



BY JOHN C. MERRIAM. 



The species here described have already been mentioned by the 

 author as being new forms in a short paper 1 on the age and general 

 character of two Tertiary faunas from the southern coast of Van- 

 couver Island. 



These faunas were referred to two horizons occurring at different 

 localities, one at Carmanah Point at the entrance to the Strait of 

 Fuca, the other near Muir and Coal Creeks in the Sooke district. 

 The horizon at the first-named locality was temporarily designated 

 as the Carmanah Point beds, and is correlated with Conrad's 

 Astoria Miocene, excluding the lower portion of his series which 

 has been supposed to be Eocene. The second horizon was named 

 the Sooke beds, and is, as nearly as can be determined from the study 

 of the known fauna, of Middle Neocene age. 



The material on which the descriptions are based was collected 

 by Dr. C. F. Newcombe, of Victoria, B. C., who has kindly per- 

 mitted the author to study the extensive collections which he has 

 made at both of the above-mentioned localities. 



Cytherea Newcombei n. sp. 



Shell subquadrate to oval, high, moderately thick, truncated an- 

 teriorly. Beaks not prominent. Lunule faintly marked. Surface 

 ornamented with numerous, irregularly placed growth lines and 

 ridges. On some well-preserved specimens a large number of very 

 faint radial lines are visible. Length of large specimen 70 mm., 

 breadth 55 mm. Hinge of right valve with three cardinal teeth 

 and a short pit for the anterior lateral tooth of the opposite valve. 

 This pit for the reception of the anterior lateral tooth is shallower 

 and much shorter than in the following species. 



Locality: Sooke beds, Vancouver Island. 



Cytherea vancouverensis n. sp. 



Shell oval, narrowly rounded anteriorly. Beaks prominent. 

 Lunule well marked. The somewhat weathered surface of the 

 shells ornamented by numerous, irregularly placed growth ridges. 

 Length of type specimen 62? mm., breadth 48 mm. Hinge of right 



1 Note on Two Tertiary Faunas from the Kocks of the Southern Coast of 

 Vancouver Island. Bull. Geol. Dept. Univ. of Calif., Vol. 2, No. 3. 



