54« axel a. olsson 



Explanation of Plate 75 



Figure r'age 



1-lc. Caryocorbula (Caryocorbula) amethystina, new species 429 



Figs. 1, lb, ic, length 27.4 mm. Taboguilla, Panama. Coll. H. B. 

 Johnson, Holotype, ANSP 218902; Fig. la, length 26.3 mm. Bucaro, 

 Panama. PRI 25934. 



2-2c. Caryocorbula (Caryocorbula) oTulata (Sowerby) 428 



Figs. 2, 2a, length 26.6 mm.; Fig. 2b, length 25.5 mm. Zorritos, 

 Peru. PRI 25905A; Fig. 2c, length 22.7 mm., Bucaro, Panama. 

 PRI 25905B. 



3-3e, Caryocorbula (Caryocorbula) nasuta (Sowerby) 429 



Fig. 3, length 12.8 mm.; Figs. 3a, 3b, length 15.3 mm., these last 

 figures show the snoutlike extension; Fig. 3c, inside of a left 

 valve, length 14.3 mm.; Fig. 3d, dorsal view of a specimen 

 without the posterior snout.; Fig. 3e, exterior of a specimen, 

 somewhat enlarged to show fine, radial striation, length 12.8 mm. 

 Zorritos, Peru. PRI 25906. 



4-4b. Juliacorbula biradiata (Sowerby) .... 437 



Figs. 4, 4a, length 13.1 mm.; Fig. 4b, length 12.3 mm. San Miguel, 

 Rey Island, Pearl Islands, Panama. PRI 25907. 



5. Caryocorbula (Caryocorbula) marmorata (Hinds) 431 



Length 6.3 mm., Santa Elena, Ecuador. PRI 25908. 



6-6b. Juliacorbula bicarinata (Sowerby) 436 



Length 8 mm. Isla la Plata, Ecuador. PRI 25909. 



7, 8. Caryocorbula (Caryocorbula) nuciformis (Sowerby) 430 



Fig. 7, length 10.6 mm.; Fig. 8, upper figure of interior, length 

 14 mm., lower figure of exterior, length 10.2 mm. Zorritos, 

 Peru. P"RI 25910. 



