534 axel a. olsson 



Explanation of Plate 61 



Figure Page 



1-lb. Donax rostratus C. B. Adams 338 



Length 16.8 mm. Cojimenes, Ecuador. PRI 25814. 



2-2b. Donax ecuadorianus, new species 340 



Fig. 2, enlargement of surface showing details of sculpture; Figs. 

 2a, 2b, length 18.7 mm. Canoa, Ecuador. Holotype, ANSP 218909. 



3-3b. Donax mancorensis, new species 340 



Length 25.4 mm. Zorritos, Peru. Holotype, ANSP 218910. 



4-4b. Donax conradi Deshayes 



Length 27.4 mm. Mazatlan, Mexico. ANSP 166265. 



5. Donax obesus d'Orbigny 344 



Length 12 mm. Biicaro, Panama. PRI 25815. 



6-6b. Donax punctatostriatus Hanley 341 



Fig. 6, length 27.5 mm., Guaymas, Mexico; Fig. 6a, 6b, length 

 34 mm. Acapulco, Mexico. PRI 25816. 



