41 



Irregularly alternate. 'The uterus in eUieieiit but as yet non- 

 ovigcrous links (Fig. I) shows as a median longitudinal tube, 

 with about a do/.en lateral branches extending toward the 

 margins of the link, these when filled with ova showing as 

 thick, round-ended, club-like branches. The two ovaries 

 and vitelline gland lie along the posterior margin of the link, 

 much as in Tasnia saginata, the vitelline gland directly back 

 of the uterine tube, the ovaries spreading out on either side, 

 their oviducts joining the uterine canal a little in front of its 

 posterior end. Between the uterus and the genital jx>re there 

 is a thick plicated tube, regarded by the writers as a recep- 

 taculuin seminis. The cirrus is slender; cirrus pouch thick 

 and muscular; the testes in non-gravid links numerously 

 seen in the lateral fields. 



The ova (Fig. 5), when obtained without tearing it, show 

 a delicate colorless outer sac (amnion?), within which lies the 

 ovum proper; this sac is spheroidal and measures 85 to 90 

 micromillimeters in diameter. The ovum is spherical, 

 double walled, colorless, with a coarsely granular and some- 

 what laminated material between the walls; the enclosed 

 embryo granular and provided with six hooklets. Outer 

 diameter of ovum, 28 to 30 inieromillimeters; diameter of 

 embryophore, 16 to 18 micromillimeters. 



Examination of helminthological literature at command 

 of the writers has thus far failed to show any ta?nia having 

 comparable features to the above, and for this reason it is 

 believed to constitute a new species, for which the name 

 Tatiia eunectes is proposed. 



Cotugnia browni, n. s. (Plate II, Figs. 6 to 10). 



From the tapeworms of the type of the dipylidium 

 group, with two sets of genital organs in each segment, the 

 genus Cotugnia was framed to include those cestodes having 

 such arrangement of the genital apparatus met in birds and 

 provided with a rostellar armature of numerous hooklets, 



