112 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. xxxiii. 



The intestinal rami orioinate at the ventral sucker and dorsal to it. 

 At their origin they constitute a somewhat convoluted or lobed mass, 

 from which they contijuie to the posterior end of the body as greatly 

 int1at(»d, somewhat spiral tubes with very thin walls and tilled with a 

 clear, structureless, or colloid material. The intestinal rami occupy 

 the greater part of the body behind the ventral sucker and are very 

 conspicuous. Both in the living and the pi'cserved material the intes- 

 tinal rami appear as a series of semitransparent spaces. No genital 

 organs, even as rudiments, were distinguished. 



Tran verse sections reveal the following structure: The epidermis is 

 underlaid by a thin layer of longitudinal libers. Next within this is 

 a somewhat broken layer which, from its position, suggests the 

 rudiments of vitellaria. The remainder of the bod}^ is filled with 

 parenchyma, as shown in the figures. 



Lengths of five living specimens, in millimeters: 2.15; 1.98; 1.68; 

 1.28; 1.05. (Corresponding breadths: 0.35; 0.48; 0.38; 0.32; 0.27. 

 Detailed measurements of one: Length 2.15, breadth 0.35; diameter 

 of oral sucker 0.06, of ventral sucker 0.21. One specimen, which 

 may be abnormal, had the following dimensions: Length 2.10, 

 breadth 0.18; oral sucker, length O.OT, breadth 0.06; ventral sucker 

 not quite definite but appeared to be 0.18 in diameter. 



Forms reseml)ling these were found in Coryphsena equisetts and 

 C. Jdjyp^iTim at Beaufort, North Carolina, and in Breiwortla fi/rannis 

 at Woods Hole, Massachusetts. 



The}^ were found in one of the Bermuda fishes. 

 Lycodo) I t!s in or !i > ga . 



August 3, eighty-four, in alimentary canal. Most of these speci- 

 mens were found in washings from the intestines. A few cysts under 

 the serous coat of the intestine were opened, and from two of them 

 distomes of this species were obtained. Nothing distinguishable was 

 found in the other cysts. Thesp cysts were white, rather soft, and 

 filled with a whitish, granular material. 



DISTOMUM TOMEX," new species. 

 Plate XIV, figs. 94-96. 



Ty/?e.— Cat. No. 5805, U.S.N.M'. 



Body long and slender, unarmed; ventral sucker near the anterior 

 end, smaller than oral sucker, with transverse aperture; oral sucker 

 P3a-iform, the larger end in front, aperture circular and terminal; no 

 pharynx; esophagus distinct; intestinal rami extending to the posterior 

 end of' the body; genital papilla prominent, at base of oral sucker on 

 ventral side, with 2 external apertures; uterus with greater part of 

 ova at posterior end of body, but opening' at the genital papilla; vas 



» From the Latin word tomex, signifying a cord. 



