52 



CATALOG of RECENT MOLLUSCA 



PLATE 23 



18-19. Terebratalia transversa. Sow. 

 Transverse Lamp Shell. California coast. 

 The largest specimens have come from 

 Puget Sound. Illustration shows inside 

 and outside of shell IVfe" 50c 



2H. Acmaca patina. K-.I h. The 1'late I.imi"' 

 Califnriiin '".i t The out-nit- ,, ,,( dark rolt.r 

 with niiliat ini' line In nit- there i-i a dark 



rinK around I hi- edne. then a broad lilui-^h-whiti- 

 lining and ti'-nr thi- ri'iiti-r a palcti of hriiwn. 

 If 'it ihiTt- n rr many variationx. I 1 -." '-''" 



2\. Hipponyx antiquatus, L. The Ancient 



}li of-sht-ll. California coast. Thi-ro art 1 thrt-c 

 spfcii-s on this roast and all diffi-r widely. This 

 littli- ffllow is about half an inch and loves to live 

 on back of other shells. There are about 30 

 in the world. 25c 



22. Crucibulum spinosum. Sow. The Cup and 

 Saucer Shell. California coast, mainly south. 

 It lives on the rocks, often well camouflaged. 

 You pry them off with a sharp knife. In the 

 warmer waters of the ocean there are 2 inch 

 fi rms hut this species i- about an inch. 50c 



