panamic-pacific pelecypoda 541 



Explanation op Plate 68 



rnterior of some Panamic-Pacific tellinids to show size and shape of pallial sinus. 

 Figure Page 



1. Eurytellina (Eurytelliua) laceridens Hanley 392 



Length 69.3 mm. Sua, Ecuador. PRI 25854. 



2. Eurytellina (Eurytellina) ebumea (Hanley) 394 



Length 55.1 mm. Charapota, Ecuador. PRI 25855. 



3. Tellinidella princeps (Hanley) 399 



Length 72.3 mm. Puerto Chame, Panama. P'RI 25856. 



4. Moerella (Moerella) erythronotus (Pilsbry and Lowe) 402 



Length 23.3 mm. Old Panama, Panama. PRI 25857. 



5. Moerella (Moerella) tumbezensls, new species 403 



Length 20.4 mm. Posorja, Ecuador. 



6. Eurytellina (Eurytellina) hertleini, new species 393 



Length 48.9 mm. Isla del Gallo, Colombia. 



7. Psammetreta grandls (Hanley) 412 



Length 90 mm. Mompiche, Ecuador. PRI 25858. 



8. Eurytellina (Eurytellina) rubescens (Hanley) 395 



Length 39 mm. Venado Beach, Panama Canal Zone. PRI 25859. 



9. Phyllodina fluctigera (Dall) 380 



Length 29.2 mm. Zorritos, Peru. See also Plate 69, fig. 5. PRI 

 25860. 



10. Florimetis cognata (Pilsbry and Vanatta) 410 



Length 65 mm. Venado Beach, Panama Canal Zone. PRI 25848. 



11. Moerella (Sclssula) esmeralda, new species 407 



Length 23.2 mm. Camarones, Esmeraldas, Ecuador, 



12. Psammaeoma lamproleuca (Pilsbry and Lowe) 414 



Length 90 mm., Bucaro, Panama. PRI 25861. 



13. Tellina (Tellina) cumlngii Hanley 379 



Length 72.2 mm.. Pearl Islands, Panama. See also Plate 69, fig. 3. 

 PRI 26862. 



14, 15. Elpidollina decumbens (Carpenter) 407 



Fig. 14, length 39.4 mm.; Fig. 15, length 45.6 mm. Old Panama, 

 Panama. PRI 25863. 



16. Fsammothalia cognata (C. B. Adams) 417 



Length 50 mm., Boca Fan, Peru. P'RI 25864. 



