114 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. xxxiii. 



posterior end 0.22. The pharynx was not visible in this specimen, 

 but in the other its length was 0.06. In the latter specimen the length 

 of the oral sucker was 0.16, of the ventral sucker 0.21, whole 

 length 2. 

 Distonmim^ species from Angelichthys ciliaris. (Plate VII, fig. 57.) 



July 14, two; July IT, two. None of the specimens were in good 

 condition. The body is subcylindrical and curved ventrally. Numer- 

 ous dark brown blotches were noted in one. These are conspicuous 

 in the mounted specimen, and appear to represent the intestines. 

 Some deepl}" staining granular masses lay near each lateral margin at 

 about the posterior third. They have the general structure of vitel- 

 laria. The ova, to the number of about two hundred, lay between 

 these bodies. 



Dimensions in millimeters, life: Length 2.16, breadth 0.7; suckers 

 near together and about equal, the anterior 0.18 in diameter; ova 0.030 

 by 0.014. Length of another 1.65; breadth 0.42. 



Distomum {Lecithocladium)^ species from Seriola dumerili. (Plate 

 VIII, figs. 59, 60.) 



July 16, nine; July 24, one. Body cylindrical, finel}^ ringed, a 

 character which may disappear when the specimen has been for some 

 time under slight pressure; posterior end of body retractile; neck 

 cylindrical, very contractile, with a tendenc}' to arch; testes close 

 together behind the ventral sucker, the left a little in advance of the 

 right; cirrus and cirrus pouch in neck, genital pore just behind the 

 oral sucker and a little to the left of the median line; seminal vesicle 

 in front of testes; ovary close behind testes; folds of uterus behind 

 testes and ovary, passing forward to right of cirrus to the genital 

 pore; vitellaria tubular, convoluted, on either side of ovary; ventral 

 sucker much larger than oral, pharynx oval, diameter about equal to 

 length; rami of intestine extending nearl}^ to the posterior end. 



Dimensions, in millimeters, balsam: Length, exclusive of retractile 

 portion, 1.14, diameter 0.30; diameter of oral sucker 0.15, of pharynx 

 0.06, of ventral sucker 0.27; ova 0.016 by 0.007. 

 DistoTmim., species from TeutJds hepatus. (Plate VIII, fig. 61.) 



July 21, one and fragment, neither in good condition. 



The stained and mounted fragment shows only the following meager 

 details: Beginning at the posterior end the body is seen to be filled 

 with ova. A small structure, 0.7 mm. from the posterior end, about 

 0.2 mm. in diameter, transversely striated, is apparently a seminal 

 receptacle. At the anterior border of this organ is a cluster of oval 

 bodies, four or more in number, which may represent a deeply lobed 

 ovar}^ with lobes 0.1 mm. in length. At a distance 0.6 mm. in front 

 of these bodies a testis was made out, and beside it the faint indica- 

 tions of another. About 0.6 mm. in front of the testis a large seminal 

 vesicle was seen. 



