38 



MAZATLAN BIVALVES 



colour in irregular radiating lines, crossing the oblique stri£E. 

 It measures long. "37, lat. '64, alt. '12. 



^«i— Mazatlan ; Col. Cuming.—?? Mazatlan ; in Spoudjdus 

 washings ; L'pool Col. 



61. Tellina beevieosteis, Desk. 

 Proc. Zool. Soc. 1854, p. 362. 



This little valve seems to suit the description above quoted: it 

 diflers from T. gracillima in being very injcquilateral, the lateral 

 and cardinal teeth very strong, and the lamellaj very regular, 

 not much raised and rather close. Lo7iff.'03, lat. 05, alt. '015. 

 Hah. — Central America and California [?Gulfl, Col. Cum- 

 ing. — Mazatlan ; extremely rare, jun ; Upool Col. 



Tablet 124 contains 1 valve, and a fragment of a larger 

 specimen. Nothing else was foimd. 



62. Telltna ? dentictjlata, Desh. 



Proc. Zool. Soc. 1854, p. 365. 



Shell like a little T. crassa, with exceedingly large and 

 projecting lateral teeth ; muscular impressions strongly mark- 

 ed. Pallial line indistinct. The outside of both valves is worn, 

 and prevents the identification of the species. Long. '065, 

 lat. ■()/, alt. -02. 



Hah. — Unknown, Col. Cuming. — ? Mazatlan ; from Spondyhis 

 washings ; Uiiool Col. 



Tablet 125 contains the only specimen. 



63. Tellina , sp. indet. 



Tablet 126 contains an imperfect valve remarkable for its 

 3 strong rather divergent cardinal teeth ; the lateral ones are 

 not developed, but there appear spaces for their reception 

 from the opposite valve. 



Ilah. — Mazatlan ; off Spondylus ; L'pool Col. 



64. Tellina , .<ip. indet. 



Tablet 127 contains a broken valve remarkable for its sub- 

 diaphanous concentric lines on a smooth surface. A fragment 



