NO. 1560. PARASITES OF BERMUDA FISHES— LINTON. 117 



Dlstomicw, species from Ballstes cHToUnendH. (Plate XII, tii^. 84.) 



July 14, three. Bod}" thickish, depressed, covered with spines which 

 are low and rounded in front, dense on head and anterior part of 

 body, less dense posteriorly. Ventral sucker larger than oral; mouth 

 subterniinal; esophagus none; intestinal rami broad and extending- to 

 posterior end of body; testes two, close together, one in front of the 

 other, about halfway between the ventral sucker and the posterior 

 end, not lobed; ovary subglobular, in front of testis, near and a little 

 to the right; uterus in front of testes passing to the left of the ven- 

 tral sucker to open in fiont of it and a little to the left. Cirrus and 

 its pouch very indistinct. Seminal vesicle in front of ovary and 

 behind ventral sucker but not clearly shown. Cirrus dorsal to ventral 

 sucker and on left side. Vitelline glands diffuse, posterior and 

 marginal, covering and hiding other organs and extending in front 

 of ventral sucker. Ova relatively few and large. 



Dimensions, in millimeters, life. Length 8.15; breadth 0..56; diam- 

 eter of oral sucker 0.22, of pharynx 0.15, of ventral sucker 0.15; ova 

 0.06 by 0.03. 



In Pratt's Synopsis this species appears to belong in the genus 

 Halicontetra. 

 Disfouiuj/i , species h'om Paranthia^ fuvcifer. (Plate XIII, fig. 85.) 



July 29, one. Body nearly linear, covered with low, rounded spines; 

 oral sucker slightly exceeding the ventral; ventral sucker nearl}" 

 equally distant from the two extremities, aperture transverse; pharynx 

 large, esophagus distinct, intestinal rami extending to posterior end; 

 testes two, one following the other, near posterior end; ovary at front 

 edge of anterior testis; uterus between ovary and ventral sucker; 

 vitellaria diffuse, posterior and lateral, extending in front of ventral 

 sucker. 



Dimensions, in millimeters, life: Length 1.38; breadth, anterior 

 0.18, at ventral sucker O.lO; oral sucker, length 0.18, ])readth 0.15; 

 pharynx, length 0.16, breadth 0.12; diameter of ventral sucker 0.15; 

 ova 0.05 by 0.036. Same, in balsam: Length 1.28; oral sucker, length 

 and breadth, each 0.13; ventral sucker, length 0.10, breadth 0.12. 

 The outline of the testes diti'ers from that shown in the sketch, which 

 was made from life; each testis is broader than long and the margins 

 are uneven. 



Although the specimen seems to be in fairly good condition and the 

 testes, ovary, and vitellaria are well 'differentiated ])y the stain, there 

 is no indication of cirrus, pouch, or genital aperture. 



This distome appears to belong to the genus Ihdicoiiietra of the 

 later classification. 



