. Bulletin - United States National Museum. Science. 216 BULLETIN 120, UXITED STATES NATIONAL MUSEUM. Opalina chorophili, U. S. National Museum No. 16572 (fig. 187). Host.âChorophilus feriarum (Baird) , four infections from United States National Museum frogs from North Carolina and the District of Columbia, and many living infections from Raleigh, North Carolina, April; H. H. and C. S. Brimley, collectors. From one of the latter infections were taken the specimens of the Opalina deposited with the United States National Museum. Measurements of a long, slender individual.âLength of body
. Bulletin - United States National Museum. Science. 216 BULLETIN 120, UXITED STATES NATIONAL MUSEUM. Opalina chorophili, U. S. National Museum No. 16572 (fig. 187). Host.âChorophilus feriarum (Baird) , four infections from United States National Museum frogs from North Carolina and the District of Columbia, and many living infections from Raleigh, North Carolina, April; H. H. and C. S. Brimley, collectors. From one of the latter infections were taken the specimens of the Opalina deposited with the United States National Museum. Measurements of a long, slender individual.âLength of body mm.; width of body mm.; thickness of body mm.; diameter of nucleus mm. to mm.; width and thickness of disk-shaped endospherule, first mm. by mm.; second mm. by mm.; cilia line interval, anterior mm., middle mm., posterior mm. Opalina chorophili, from all its hosts, has a very wide ectosarc, ex- cept at the anterior end of the body. (Fig 188.) The slender posterior end of the body is usually more or less twisted. It seems to be distinct from 0. ohtrigonoidea. OPALINA HELENAE, new species. Ty^e.âUnited States National Museum No. 16576. Host.âAgalychnis helenae Cope, two infections, one from Nicaragua, and the other, the type infection, from United States National Museum specimen No, 29959, 65 mm. long, female with pale eggs mm. in diameter, from San Carlos, Costa Rica; Burgdorf and Schild collectors. Measurements of an average individuM.âLength of body mm.; width of body mm.; thickness of body mm-; diameter of nucleus mm. to mm.; diameter of endospherule mm. to mm.; cilia line interval, anterior mm., middle â O .:0-.;.0V O o o b Fig. 188.âOpalina helenae: a and 6, magnified 117 diameteks ; c, a bit of thb/ BODY MAGNIFIED 460 DIAMETERS. There are in these infections wedge-shaped individuals, pointed at the posterior end,"and wider
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