62 PROCEEDINGS OF THE NATIONAL MUSEUM vol.88 



Family ALLOCREADIIDAE Stossich, 1904 

 Subfamily Allocreadiinae Looss, 1902 



Genus LEBOURIA NicoU, 1909 



LEBOURIA TRUNCATA, new species 

 Plate 3, Figubes 21, 22 



Small distomes, smooth, generally broadest near posterior end, 

 tapering to anterior end; often subtriangular in outline; ventral 

 sucker larger than oral ; pharynx about half diameter of oral sucker ; 

 esophagus short, but in flattened specimens as long as or longer than 

 pharynx ; intestines reach to posterior end ; genital pore near posterior 

 end of pharynx, on median line, or near it. Cirrus and cirrus pouch 

 not seen; seminal vesicle dorsal to ventral sucker, seen at the an- 

 terior border of the ventral sucker in one, where it appeared to have 

 been crowded forward by the mass of ova; in another it lay at the 

 right posterior border of the ventral sucker, length, 0.09 mm., breadth, 

 0.045 mm., and extending for about half its length back of the ventral 

 sucker. It would appear that the cirrus is represented only by an 

 ejaculatory duct. Testes two, diagonal, contiguous. Ovary in front 

 of right testis, on right side of median line, lobed. Uterus between 

 testes and ventral sucker, many ova lying along the left side and in 

 front of the ventral sucker, as far as the pharynx, and in one case 

 to the left side of the oral sucker. While not certainly made out, 

 the early folds of the uterus appeared to contain sperm. Shell gland 

 on left of ovary ; vitellaria diffuse, from posterior end along the mar- 

 gins to the level of the pharynx. Ova in balsam about 0.06 by 

 0.03 mm. 



Type specimens. — U.S.N.M. No. 8216 (holotype and paratypes). 



Hosts. — Common weakfish {Cynoscion regalis), kingfish {Menti- 

 cirrhus saxatilis), white perch {Morone amerlcana), lizardfish 

 {Sy nodus foetens). 



Record of collections. — Collections of July 7, 1899, and August 6, 

 1900, from weakfish, on slides containing specimens of Cynibephallus 

 ■ritellosus. Dimensions in balsam: Length, 1.57 mm., breadth, 0.75 

 mm.; breadth of oral sucker, 0.16 nun., of pharynx, 0.08 mm., of 

 ventral sucker, 0.31 mm. ; ova, 0.061 by 0.034 nmi. 



Twelve (U.S.N.M. No. 8215), collected September 10, 1928, from 

 8 young weakfish, from 68 to 112 mm. in length. These fish were 

 seined on the same date and at the same locality as the examples of 

 Menticirrhus saxatilis and Synodus foetens., from which this distome 

 was also obtained. 



