TREMATODES FROM FISHES — LINTON 91 



middle of the length, tapering rather uniformly to bluntly rounded 

 ends; prepharynx short, esophagus about as long as pharynx; testes 

 oblique; ova few; vitellaria extend nearly to pharynx; genital pore 

 about halfway between ventral sucker and pharynx, a little to left 

 of median line; cirrus pouch extending back of A^entral sucker. 

 Measurements, balsam : Length, 1.06 mm., breadth, 0.49 mm. ; breadth 

 of oral sucker, 0.15 mm., of pharynx, 0.06 mm., of ventral sucker, 

 0.13 mm. ; ova, 0.126 by 0.078. ( U.S.N.M. No. 8280.) 



Genus LEPIDAPEDON Stafford, 1904 

 LEPIDAPEDON CLAVATUM, new species 



Plate 4, Figures 36, 37 



Body thickish, body more or less terete; neck and anterior part of 

 body covered with dense, minute spines; tapering gradually to ante- 

 rior end, and more or less abruptly to posterior end; oral sucker 

 subterminal, pharynx relatively large, ventral sucker larger than 

 oral; prepharynx approximately as long as pharynx, varying with 

 state of contraction of neck; esophagus short, if any, intestines 

 extend to posterior end; genital pore in front of ventral sucker, 

 median or nearly so; cirrus pouch sliort, muscular, at anterior edge 

 of ventral sucker; testes two, relatively large, more or less rounded, 

 close together, one following the other, at about the posterior third, 

 the second testis a little more than its length from the posterior end ; 

 ovary at anterior border of first testis; uterus between ovary and 

 ventral sucker; ova not numerous, relatively large, for the most part 

 clustered behind the ventral sucker ; vitellaria diffuse, follicles coarse, 

 from the posterior end to within a short distance of the ventral 

 sucker. 



One specimen from Lojyhopsetta maculata and four from Cera- 

 tacanthus schoepfi suggest L. rachion^ but in each of them the ventral 

 sucker is distinctly larger than the oral. 



Type specimens. — Holotype, U.S.N.M. No. 8281; paratypes. No. 

 8282. 



Hosts. — Filefish {CeratacantJius schoepfl) and windowpane {Lo- 

 plwpsebta 7naculata) . 



Record of collections. — From filefish: One, collected August 7, 

 1905. Measurements, lateral view, in glycerin: Length, 3.5 mm.; 

 maximum breadth, 0.84 mm.; oral sucker, length, 0.22 mm., breadth, 

 0.28 mm.; pharynx, length, 0.22 mm., breadth, 0.29 mm.; ventral 

 sucker, 0.37 mm., breadth, 0.35 mm. ; ova, 0.08 by 0.04 mm. 



One (U.S.N.M. No. 8281), collected July 29, 1908. 



Two (U.S.N.M. No. 8282), collected August 21, 1915. Body terete, 

 nearly linear, <rreatest breadth at level of testes, tapering gradually 



