36 PROCEEDIISrGS OF THE NATIONAL MUSEUM vol.81 



OOCHORISTICA ANOLIS, new species 



I'late 3, Figure 3 



Specific diagnosis. — Oochoristica: A white flat tapeworm, with 

 conspicuous segmentation. The total length of a specimen with ripe 

 segments is 70 mm, and the maximum breadth about 1 mm. The 

 scolex is 0.35 mm broad and distinctly marked off from the neck. 

 The suckers are relatively very large, measuring 0.16 by 0.3 mm. The 

 neck is 0.35 mm wide and about 2 mm long. As usual the first seg- 

 ments are wider than long. The first mature segments appear about 

 20 mm from the scolex, and they are about 0.95 mm long by 0.85 mm 

 wide. The genital pore lies close to the caudal end of the first fourth 

 of the proglottid. The cirrus sac is from 0.16 to 0.145 mm long by 

 0.11 to 0.09 mm wide. The vas deferens runs mesad to a point 

 directly above the ovary and then turns caudad. The testes lie 

 almost entirely caudal to the ovary, but caudal and lateral to the 

 vitellaria. There are from 20 to 35 testes in each proglottid, and 

 the testes are about 0.3 mm in diameter. The ovary is distinctly 

 bilobed and about 0.35 mm wide. Directly caudal to it lie the shell 

 gland and the vitellaria in the order named. The vitellaria measure 

 0.145 by 0.13 mm. A small seminal receptacle lies dorsal to the 

 shell gland, and from this structure the vagina runs cephalad. At 

 the cej)halic margin of the ovary the vagina curves laterad. The 

 sexual ducts pass between the longitudinal ducts of the excretory 

 system, which is much branched and forms a network in each pro- 

 glottid. The ripe proglottids are usually a little more than twice 

 as long as broad. Within them the eggs are scattered singly in 

 capsules. The eggs are about 64ju, in diameter, and the embryos 40/,i. 



Host. — Anolis carolinensis. 



Habitat. — Intestine. 



Locality. — Houston, Tex. 



Tyfc specimen.— \].'^:^M. Helm. Coll. No. 30898. 



Remarhs. — The foregoing description is based on a single tape- 

 worm and therefore gives no idea of the variation that may occur 

 between different individuals of the same species. It is very similar 

 to 0. fibrata Meggitt, but it differs from this form in the size of 

 the cirrus pouch and in the smaller number of testes. It is also 

 closely related to the species from Eumeces described below, under 

 which the relationship of these forms is more fully discussed. 



OOCHORISTICA EUMECIS, new species 



Plate 3, Figtjbe 4 



SpecifiG diagnosis. — Oochoristica: A flat white tapeworm with 

 distinct segmentation. The total length is 103 mm, but there are 



