NO. 1560. PARASITES OF BERMUDA FISHES— LINTON. 107 



DISTOMUM MACROCOTYLE Diesing. 

 Plate IX, fipr. 66. 



One 8pecimen of this di.stome was found in Tent Ji Is hepatns^ August H. 



Dimensions, in millimeters, life: Length 4.8; diameterof oral sucker 

 0.3, of ventral sucker 0.5; ova 0.08 by 0.02. 



Dimensions of same mounted in balsam: Length 4.35; diameter of 

 neck 0.35, of middle of bod}" 0,<)3, near posterior end 0.35; oral sucker, 

 length 0.24, depth 0.30; diarueter of pharynx 0.12; ventral sucker, 

 length 0.72, depth 0.54; ova 0.027 by 0.015. 



Anterior end white to ventral sucker, back of ventral sucker pink; 

 yellowish in alcohol. 



This distome is referred to the genus Accdculiinii in Pratt's Synopsis. 



DISTOMUM NITENS Linton. 

 Plate X, ti<:s. (17, (>S. 

 Dhtomum nitens Linton, Proc. I'. 8. Nat. Mus., XX, \>. ^^^.\4, pi. li, tijrj;. 5, 6; pi. 



LII, fig. 1. 



Two specimens of this distome were obtained, July 16, from Tylo- 

 surus acus. They were elongated, cylindrical, slightly irregular in 

 outline, slender, suckers whitish, body orange, neck lighter in color 

 than the bod}" and concave below ; ventral sucker somewhat prominent. 



Dimensions of living worm in millimeters: Length 5; length of 

 oral sucker 0.30, of ventrd sucker 0.(53; ova 0.028 by 0.014. 



No spines w^ere observed on these specimens. The ovary is trans- 

 versely elongated instead of glol)ular; a seminal receptacle was noted 

 behind the ovary. Other details are given in the sketch. 



Th(\se specimens belong to this species or are near it. 



According to the later classitication of distomes I). nitensh&Xongsto 

 the sul)family Plagiorch/nx^ and probably is near the genus Enodia 

 Looss. 



DISTOMUM GYRINUS,rt new species. 

 Plate X, tigs. 72-74. 



Tyj^e.—C^t. No. 5800, U.S.N.M. 



Bod}^ cercaria shape, the tail portion equaling, in some cases exceed- 

 ing the length of the anterior portion, smooth; intestine not seen; 

 pharynx absent. 



Anterior sucker nmch larger than ventral; testes two, relatively 

 large, lateral, transverse, beginning behind oral sucker and near it and 

 extending posteriori}- a short distance back of the ventral sucker; 

 seminal vesicle in front and to right of ventral sucker, dorsal; ovary 



« From the Latin word Gyrinus, signifying a, tadpole. 



