PROTEOCEPHALUS-CHAMELENSIS N-SP (CESTODA, PROTEOCEPHALIDAE) FROM THE GUAVINA GOBIOMORUS-MACULATUS (OSTEICHTHYES, ELEOTRIDIDAE) IN CHAMELA BAY, JALISCO, MEXICO

A new species of Proteocephalus inhabiting the eleotridid estuarine fi sh Gobiomorus maculatus is described from Chamela Bay, Jalisco State, Mexico. The new species and P. pugetensis are nearly identical in stro bila length, presence of a vestigial apical organ, having vaginae only anterior to the cirrus sac, an average of 4-7 uterine diverticula per proglottis, and a ratio of cirrus sac length to proglottis width aver aging approximately 1:4. Proteocephalus pugetensis differs from the ne w species by having an average of 35 rather than 68 testes per proglot tis, vitelline follicles terminating posteriorly at the level of the a nterior margin of the ovary rather than at the level of the posterior margin, and equatorial genital pores rather than genital pores located in the anterior 1/4 of the proglottis. Finally, Proteocephalus pugete nsis occurs from estuarine habitats along the Pacific coast of the Uni ted States; the new species was collected from an estuarine habitat on the Pacific coast of Mexico.