1922] Packard: New Species from Santa Ana Mountains 427 



TELL1NA, sp. 

 Plate 33, figure 1 



Type specimen 12308, Coll. Invert. Palae., Univ. Calif., loc. 2168. 



Shell small, very inequilateral; posterior dorsal margin slopes somewhat 

 convexly, curving gently to the elongate posterior extremity; anteror dorsal 

 margin slopes abruptly to the rounded anterior end; base arcuate. Umbones 

 inconspicuous, situated about one-third the distance from the anterior to the 

 posterior end. The specimen is a cast which does not show the muscle impres- 

 sions nor the exterior of the shell. Length of specimen figured, 15 mm.; height, 

 7 mm. 



Horizon. — Clrico group, Tellina ooides zone. 



Family Solenidae 

 Genus SILIQUA Megerle 



SILIQUA ALISOENSIS, n. sp. 

 Plate 34, figure 2 



Type specimen 12293, Coll. Invert. Palae., Univ. Calif., loc. 2169. 



Shell rather short, wide, slightly inequilateral; anterior and posterior extrem- 

 ities evenly rounded and approximately of the same shape. Beaks small, situ- 

 ated slightly posterior to the middle line of the shell. Exterior of the shell is 

 poorly preserved, so that the sculpture is unknown. A distinct internal ray 

 extends from the beak to the junction of the pallial sinus and the posterior 

 adductor scar. Pallial sinus deep, extending anteriorly about one-third the 

 length of the shell. Length of type, 88 mm.; height, 51 mm.; convexity, 8 mm. 



Horizon. — Chico group, Tellina ooides zone. 



Family Saxicavidae 

 Genus PANOPE Menard 

 PANOPE CALIEOENICA, n. sp. 

 Plate 34, figure 1 

 Type specimen 12292, Coll. Invert. Palae., Univ. Calif., loc. 2142. 

 Shell short, inequilateral, tumid, gaping widely posteriorly and little if at 

 all anteriorly; anterior extremity evenly rounded, base broadly arcuate; poste- 

 rior extremity abruptly truncated; anterior dorsal slope short, slightly concave; 

 posterior dorsal slope long, less oblique than the anterior slope, becoming con- 

 cave upward toward the anterior end. Umbones prominent; beaks acutely 

 pointed, situated at a point about one-third the distance from the anterior to 

 the posterior end. No lunule; escutcheon ill-defined and limited in width by 

 the dorsal edges of the gaping valves. Surface marked by heavy, irregular, 

 incremental lines of growth. Hinge and pallial line unknown. Length of type, 

 95 mm.; height, 62 mm.; diameter, 45 mm. 



This species lacks the radiating sculpture common to the related 

 forms of the Indo-Pacifie region. 



Horizon. — Chico group, Actaeonella oviformis and Turritella pes- 

 caderoensis zones. 



