426 University of California Publications in Geology [Vol. 13 



MEEETEIX ?, sp. 

 Plate 33, figure 2 



A large, elongate specimen, no. 12306, that is doubtfully referred to this 

 genus was obtained at locality 2167. The specimen is devoid of shell except 

 on the anterior end, which shows an ill-defined lunule, bounded by an impressed 

 line. Irregular lines of growth are the only evidences of sculpture. The shell 

 is elongate, very tumid, with prominent umbones but inconspicuous beaks. 

 Length, 68 mm.; height, 46 mm.; diameter of cast, 35 mm. 



Horizon. — Chieo group, Turritella pescaderoensis zone. 



Family Tellinidae 

 Genus TELLINA Linnaeus 

 TELLINA ALISOENSIS, n. sp. 

 Plate 33, figure 3 



Type specimen 12309, Coll. Invert. Palae., Univ. Calif., loc. 2168. 



Shell small, elongated, inequilateral; dorsal margin slightly convex, approxi- 

 mately paralleling the nearly straight base line; posterior extremity bluntly 

 pointed; anterior dorsal margin sloping abruptly to the slightly truncated 

 extremity. Beaks inconspicuous, situated at about one-fourth the distance from 

 the anterior to the posterior end; an indistinct ridge extends from the beak to 

 the anterior end. The type is a east which does not show the muscle scars nor 

 the character of the sculpture. Length of the type, 16.5 mm.; height, 11 mm. 



This small species recalls T. ashburnerii Gabb, from which it differs 

 principally in being more inequilateral. 



Horizon. — Chico group, Tellina ooides zone. 



TELLINA SANTANA, n. sp. 

 Plate 33, figure 4 



Type specimen 12310, Coll. Invert. Palae., Univ. Calif., loc. 2169. 



Shell small, very thin, elongated, very nearly equilateral; posterior dorsal 

 margin sloping with a straight line to the evenly rounded posterior end; ante- 

 rior dorsal margin slightly concave near the beaks, then sloping in a broadly 

 rounded curve, base arcuate. Beaks small; surface smooth, with indistinct, 

 incremental lines of growth. Hinge unknown. Anterior adductor scar pear- 

 shaped. Length of type, 35.5 mm.; height, 18 mm.; beak, 16 mm. from the 

 anterior extremity. 



This species resembles T. matliewsonii Gabb in its dorsal profile, 

 but it is not so high, relatively, as that species. 

 Horizon. — Chico group, Tellina ooides zone. 



