461] 



PSEUDOPHYLLIDEA FROM FISHES— COOPER 



173 



Testes discontin-uous from proglottis to proglottis, ellipsoidal, flattened 

 anteroposteriorly, 40 by 90 by 85^, and 45 to 60 in number. Vas deferens 

 lateral to uterus-sac with few coils before entering the cirrus-sac, 350 by 70 to 

 80/x. Cirrus-sac ovoid with narrow end outward, 174 to 277// long by 92 to 

 102ju in diameter. Cirrus straight in outer half of sac, proxunally coiled or 

 dilated. 



Ovary large, entire, kidney-shaped (isthmus as thick as the wings), 0.6mm. 

 wide, occupying the posterior half of the median portion of early mature seg- 

 ments. Ova conspicuous, nuclei large, 10 to 13ju in diameter. Oocapt 34fj, 

 in diameter. Beginning cf oviduct S-shaped. Right and left vitelline ducts 

 join ventrally; common duct acts as reservoir. Vitelline follicles entirely 

 within longitudinal muscles, discontinuous, intermingling laterally with the 

 testes, irregular in shape and size, largest 30, 90 and 70/i in length, width and 

 thickness, respectively. Shell-gland compact. Uterine duct with only a few 

 coils close to the median hne; uterus-sac very wide and short, or irregularly 

 circular or quadrate surficially, often lobed, 0.75 to 1.6mm. in transverse dia- 

 meter, constantly rounded laterally; openings in median zig-zag row. 



Eggs, 80 to 98ju long by 75 to 92/i wide, shell quite transparent. 



Habitat: Intestine of the host with pseudoscolex imbedded in a pyloric 

 coecum. 



