NEMATODE PARASITES OF THE BRAZILIAN LAND-TOR-TOISE, TESTUDO DENTICULATA. RESULTS OF THE MULFORD BIOLOGICAL EXPLORATION.— HELMINTHOLOGY. By Edward A. Chapin, Of the United States Department of Agrimlture. Among the numerous vertebrates brought to this countiy by the Mulford Expedition to northern South America were two specimens of the large land tortoise, Testudo denticulata. These animals died shortly after their introduction into the National Zoological Park iind through the kindness of the United States National Museum authorities, the author was permitted to examine the viscera for parasitic worms. Four species of nematodes were found, three of which appear to be new to science. Two of the species fall into the Strongyloidea, one of them representing a new genus; of the re-maining two, one belongs in the Ascaroidea and the other in the Oxyuroidea. Superfamily STRONGYLOIDEA. Family STRONGYLIDAE. SAURICOLA, new genus. Generic c^za^cs/^.— Strongylidae ; Strongjdinae, adults about 10 mm, long, head about 140{ji, in diameter. Buccal capsule small, shal-low. Capsule surrounded by two leaf -crowns. Cuticle surround-ing mouth forming a short mouth collar, limited behind by an annular constriction. Six circumoral papillae. Lateral papillae stout, apparently with terminal organ, Submedian dorsal and ven-tral papillae more slender, projecting beyond surface of cuticle, sharply angulate before apex in lateral view. Excretory pore behind the esophagus. Cervical groove and papillae absent. Nerve ring at posterior third of esophagus. Esophagus cylindrical, about twice as long as thick. Bursa of male short, dorsal, and lateral por-tions of membrane not separated, preanal bulla present, enclosing No. 2526— Proceedings U. S. National Museum. Vol. 65, Art. 13. 1
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