Two New Pufferfishes of the Genus Sphoeroides from the Eastern Pacific

SCHAEFER, S. A. 1986. Historical biology of the loricariid catfishes: phylogenetics and functional morphology. Unpubl. Ph.D. diss. Univ. of Chicago, Chicago. SCHAEFER, S. A., AND D. J. STEWART. 1993. Systematics of the Panaque dentex species group (Siluriformes: Loricariidae), wood-eating armored catfishes from tropical South America. Ichthyol. Explor. Freshwaters 4:309-342. SCHULTZ, L. P. 1944a. The catfishes of Venezuela, with descriptions of thirty-eight new forms. Proc. U. S. Nat. Mus. 94:173-338.

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