panamic-pacific pelecypoda 549 



Explanation of Plate 76 



Figure Page 



1-lc. Panamicorbnla inflata (C. B. Adams) 435 



Fig. 1, enlargement of hinge, figs, la, lb. Ic. right and left 

 valves, length 27 mm. Puerto Falmas, Ecuador. PRI 25911. 



2-2a. ranamicorbula cylindrica Morrison 435 



Views of a right valve, length 20 mm. Limones, Prov. de Esmeraldas, 

 Ecuador. P"RI 25912. 



3-3c. Caryocorbiila (Hexacorbula) esmeralda, new species 432 



Fig. 3, length 20.5 mm.; Figs. 3a, 3b, 3c, length 21.4 mm. Esmeral- 

 das, Ecuador. Holotype, ANSP 218903. 



4-4d. Serracorbula tnmaca, new species 433 



Figs. 4, 4d, length 12.3 mm.; Figs. 4a, 4b, 4c, length 12 mm. Tumaco, 

 Colombia. Holotype, ANSP 218948. 



5. Juliacorbula ira (Dall) 436 



Length 10.8 mm. Gulf of Panama, sta. 3355 in 182 fms. Paratype, 

 USNM 122944. 



6-6a. Platyodon (Austroplatyodon) australis, new species 424 



Length 4.7 mm., Esmeraldas, Ecuador. Holotype, ANSP 218912. 



7. Caryocorbula (Caryocorbnla) nuciformis (Sowerby) 430 



C. obesa Hinds). Length 8 mm., a specimen without the accessory 

 snout. Limones, Ecuador. PRI 25913. 



8. Caryocorbula (Caryocorbula) porcella (Dall) 431 



Length 6.3 mm. Off Lower California. USNM 211269. 



9. Caryocorbula (Caryocorbula) ventricosa (Adams and Reeve) 428 



Figure copied after Hertlein and Strong, 1950; length 12.2 mm. 

 Between Acapulco and Gulf of Tehuantepec, Mexico. 



