[^5] NOTES ON ENTOZOA OF MARINE FISHES. 763 



The vagina near its beginning is tubular, but near the base of the 

 cirrus sheath it is thrown into short, crisp folds, so that the walls in 

 section appear frilled or ruffled. 



The ovaries in section when highly magnified are seen to be made up 

 of what appear to have been originally spherical bodies, but which on 

 account of mutual pressure have become somewhat polyhedral. They 

 measure from .008 to ,0i mm in diameter. The free segments contain a 

 few ova. These are oval in shape and had a smooth thin transparent 

 shell, measuring .028 and ,03G mm respectively in the two diameters. 

 The .shell incloses a granular mass which measures .014 and .019 ,nm 

 in its two diameters. 



Associated with the ova were some spherical granular masses .028 mm 

 in diameter. 



Upon examining a lot of small specimens from the same host that 

 yielded the large specimen I find an exceedingly small individual which 

 I shall, for the present, refer to this species. Its dimensions, from the 

 alcoholic specimen, are the following: Length, 4 mm ; diameter of head 

 across top, ,52 nim ; diameter of single bothrium, ,32 mm ; length of both- 

 rium with pedicel, .18 mm ; diameter of pedicel, .12 mm ; diameter of neck, 

 .10 mm , swelling immediately to .16 mm ; distance from head to first seg- 

 ments, .4 mm ; length of first segments, .04 mm j breadth, .14 mm ; length of 

 last segment, .32 mm ; breadth, .18 mm . 



There are about twenty-three segments in all. It agrees with the 

 larger specimen in the general appearance of the head, the disposition 

 and outlines of the bothria and pedicels, although the faces of the 

 bothria are not so distinctly convoluted. It differs in having a slight 

 constriction back of head, and in the character of the segments, which 

 instead of being short and crowded at first, soon become square, and 

 before the middle of the strobile is reached, are a little longer than 

 broad. 



Since writing the foregoing description I have received from Dr. E. 

 A. Andrews, of Johns Hopkins University, a single specimen, which I 

 refer to this species. It was found in the spiral valve of a sting ray 

 at Beaufort, North Carolina, August 8, 1885. The specimen has no 

 mature segments. One bothrium is missing; the stump of its pedicel 

 remains, however, to show the position of the bothrium. It differs from 

 my specimen principally in its smaller size, in the relatively finer convo- 

 lutions on the faces of the bothria, and the cylindrical, instead of coni- 

 cal, pedicels. 



The length is 35 mm ; diameter of head across the top, 2.48 mm ; diame- 

 ter of single bothrium, 1.25 m ™$ length of bothrium with pedicel, .9 mm ; 

 diameter of pedicel, .48 mm ; diameter of neck, .G8 mm . The segments 

 are all very short and crowded, their length at posterior end of strobile 

 being about .12 mm , and their breadth l mra . 



The head of this specimen was stained with carmine and cut into 

 transverse sections. The first sections show that the fine convolutions 



