panamic-pacific pelecypoda 545 



Explanation of Plate 72 



Figure Page 



1. TelUnidella princeps (Hanley) 399 



Shell with a part of the surface enlarged, length 72 mm. Bahia 

 Honda, El Lagartillo, Panama. PRI 25884. 



2. Tellinidella purpurea (Broderip and Sowerby) 399 



Shell with a part of the surface enlarged, length 62.2 mm. Biicaro, 

 Panama. PRI 25885. 



3. Tellinidella momplcheusis, new species 400 



Shell with a part of surface enlarged, length 57 mm. Mompiche, 

 Ecuador. Holotype, ANSP 218947. 



4. Moerella (Scissula) Tirgo (Hanley) 406 



Shell with part of the surface enlarged, length 18.2 mm. El Lagar- 

 tillo, Panama. PRI 25886. 



5. Moerella (Scissula) esmeralda, new species 407 



Shell with a part of the surface enlarged, length 19.7 mm. Camarones, 

 Ecuador. Holotype, ANSP 218946. 



