PANAMIC-PACIFIC PELECYPODA 511 



Explanation of Plate 38 



Figure Page 



1-lb. Laevicardium (Laevicardium) elatum (Sowerby) 257 



Figs. 1, la, interior and exterior of a riglit valve, length 115 mm. 

 Fig. lb, enlargement of hinge. Gulf of California. J. Q. Burch. 

 PHI 25679. 



2-2a. LaeTicardhim (LaeTicardinm) elenense (Sowerby) 256 



Exterior, length 15.2 mm. Esmeraldas, Ecuador. PRI 25680. 



3. Trigoniocardia (Trigoniocardia) granifera (Broderip and Sowerby) 251 



Left valve, length 15 mm. Esmeraldas, Ecuador. PRI 25681. 



4. Trigoniocardia (Apiocardia) obovale (Sowerby) 253 



Left valve, length 14.5 mm. Zorritos, Peru. PRI 25682. 



5-5b. Papyridea crockeri Strong and Hertlein 249 



Copied after Strong and Hertlein, 1937. Length 46.8 mm. Off 

 Margarita Island, Lower California. 



6-6b. Papyridea solenifonuis aspersa (Sowerby) 249 



Dorsal, interior and exterior of same shell, length 44 mm. Panama 

 Canal Zone. PRI 25683. 



7. Papyridea mantaensis, new species 250 



Dorsal view, Manta, Ecuador. PRI 25684. 



