542 axel a. olsson 



Explanation of Plate 69 



Figure Page 



]-lb. Tellidora burneti (Broderip and Sowerby) 381 



Fig. 1, length 49.2 mm.; Figs, la, lb, length 46.6 mm. Fort Amador 

 beach, Balboa, Panama Canal Zone, PRI 25865. 



2-2a. Moerella erythronotus (Pilsbry and Lowe) 402 



Fig. 2, length 23.4 mm.; Fig. 2a, length 20.2 mm. Old Panama, 

 Panama. PRI 25866. 



3. Tellina (Tellina) cumingii Hanley 379 



Length 72.2 mm. Pearl Islands, Panama. Same as fig. 13 on Plate 68. 

 PRI 25862. 



4-4a. Tellina (TeUlna) zacae Hertlein and Strong 379 



Figures copied from Hertlein and Strong, 1949. Length 33.3 mm. 

 Arena Bank, Gulf of California. 



5. PhyUodina flnctigera (Ball) 380 



Length 29.2 mm. Off Zorritos, Peru. PKl 25860. 



6-6a. Moerella (Moerella) felix (Hanley) 403 



Fig. 6, length 14.8 mm., Fort Amador, Balboa, Panama Canal Zone; 

 Fig. 6a, length 18.4 mm. Bahia Honda, near Las Tablas, Panama. 

 PRI 25865. 



7. Cymatoica undulata (Hanley) 418 



Length 14.1 mm. Esmeraldas, Ecuador, PRI 25867. 



8. Moerella (Moerella) tumbezensis, new species 403 



Length 28.2 mm., mud flats at the mouth of the Tumbez River, 

 Peru. Holotype, ANSP* 218940. 



9-9a. Moerella (Moerella) meropsis (Dall) 401 



Fig. 9, length 16.7 mm.; Fig. 9a, length 17.4 mm. Esmeraldas. 

 Ecuador. PRI 25868. 



10-lOa. Moerella (Moerella) suffusa (Dall) 402 



Fig. 10, length 15.7 mm.; Fig. 10a, length 14.3 mm. Isla del Gallo, 

 Colombia. PRI 25869. 



11. PhyUodina prlstiphora (Dall) 380 



Length 20 mm. Near La Paz Lower California. Figure after 

 Dall, 1900. 



