TREMATODES FROM FISHES — LINTON 23 



end, which is characterized by having a shallow notch with irreg- 

 ularly scalloped outline at the extreme anterior tip in front of the 

 somewhat diagonally placed anterior suckers. The posterior end is 

 expanded into a trumpet-shaped, sucker-bearing portion asymmetri- 

 cally placed. There are about 60 posterior suckers in the adult spec- 

 imen and about 50 in the young specimen. The pharynx is small and 

 the esophagus short. The intestines, except near the anterior end, are 

 concealed by the vitellaria. Genital atrium, behind forking of in- 

 testine, unarmed. Ovary at about the anterior third of the body, 

 folded upon itself, the two ends pointing forward. In the adult 

 specimen the right and shorter portion of the ovary contains small 

 and much crowded germ cells; the left portion is about twice the 

 length of the right, and contains large germ cells, with thick 

 walls. The seminal receptacle and yolk reservoir lie in front of 

 the left division of the ovary, and the shell gland and ootype 

 at its anteromedian border. The follicles of the vitellaria are rather 

 coarse, and fill the body from near the anterior, to near the posterior 

 end, and from side to side except a narrow region along the median 

 line, in front of and behind the ovary, and the space occupied by 

 the ovary. The testes lie in a linear series, and are confined to a 

 narrow median region reaching from the ovary to within a short 

 distance of the posterior end of the vitellaria. In the adult specimen 

 20 testes were counted, and in the young specimen 14. 



Measurements of adult in balsam: Length, 5.2 mm.; breadth 

 0.45 mm.; anterior suckers, length, 0,03 mm.; breadth, 0.04 mm 

 anterior end to intestinal rami, 0.18 mm., to vitellaria, 0.7 mm 

 posterior end to vitellaria, 0.4 mm. 



Type specimens. — ^Holotype, U.S.N.M. No. 8168; paratypes. No. 

 8167. 



Host. — Garfish {Strongylura marina). 



Record of collections. — One, collected September 9, 1907, from gills 

 of a 9.5-inch garfish. The process of egg-making was in progress 

 in this specimen. So far as it could be seen it proceeded in the same 

 order as has been observed in Entohdella humpusii.^ 



One, collected August 27, 1910. 



One young (U.S.N.M. No. 8167), collected August 30, 1911. Di- 

 mensions, balsam : Length, 2 mm., breadth, 0.21 mm., anterior end to 

 vitellaria, 0.4 mm.; anterior suckers, length, 0.03 mm., breadth, 

 0.036 mm. 



One (U.S.N.M. No. 8168), collected September 10, 1912. 



5 Bull. U. S. Pish Comm. for 1898, pp. 286, 287, 1900 ; and Biol. Bull., vol. 14, pp. 19-26, 

 1908. 



