NO. 1560. PARASITES OF BERMUDA FISHES— LINTON. 105 



llycteroperca apna. 



July 21, one. Dimensions, in millimeters, life, side view, com- 

 pressed: Length 1.05; diameter of oral sucker 0.12, of ventral sucker 

 0.32; ova 0.02 by 0.01. 



Synodus saurus. 



July 20, twelve. These distomes were collected in the evening 

 and placed in sea water to which a little formaldehj-de had been 

 added. They were still active on the following- morning. These 

 specimens are in agreement with this species in the general character 

 and relative positions of testes, ovary, vitellaria, and seminal vesicle. 

 The habit of the body suggests D. Iseve; the testes, also, as in that 

 species, are situated near the ventral sucker. They appear to be 

 identical with forms found in Syiiodax fiHena at Beaufort. 



Dimensions, in millimeters, life: Length 2.55; diameter of oral 

 sucker 0.15, of ventral sucker 0.33; ova 0.018 by 0.012. 



This species belongs to the family Hemiurinj^, and is near Pro- 

 nopyge Looss. 



DISTOMUM VITELLOSUM Linton. 



Plate IX, figs, (io, 64. 



Distovium vltellof^um Linton, Bull. U. S. Fish Coin, for 1899, p. 290, pi. xxxvii, 

 figs. 38-39; p. 416, etc., pi. xxx, figs. 333-340; Bull. Bureau of Fislieries, 

 XXIV, p. 335, etc., pi. xxiv, figs. 176-178. 



This varia))le distome, belonging according to Pratt to the sub- 

 family I*sil(>><tominai^ was found in five of the Bermuda fishes. 

 Hafhystoma i>triat>(iii . 



fJuly 17, one, small, imperfect. 

 Bodian ua fulvus punvtatus . 



July 22, one, minute, about 1 mm. in length. 

 Calamus calamus. 



July 14, one. This specimen agrees with this species in the general 

 arrangement of the genital organs, size of ova, and proportions of the 

 suckers. The ventral sucker is evident!}^ pushed posteriori}^ ])y the 

 extreme contraction of the bod}-, since the uterus lies for half of its 

 length directly dorsal to it. Dimensions, in millimeters, life: Length 

 1.72, breadth 0.67; ova O.OG by 0.04. In balsam, length 1.40, great- 

 est breadth 0.60; diameter of oral sucker 0.22, of pharynx 0.15, of 

 ventral sucker 0.34. 

 Iieenn\don Jlxwollneatum . 



July 9, four; 31, six. Length 1.35 to 2.78 nun. While agreeing 

 closely with this species it was noted that on the dorsal surface at 

 the anterior end there was a slight roughening due to low nodular 

 projections. 

 Holocentrus ascenscionis. 



July 31, two, length 1.35 and 1.73 mm. 



