461] 



PSEUDOPHYLLIDEA FROM FISHES— COOPER 



173 



Testes discontinuous from proglottis to proglottis, ellipsoidal, flattened 

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

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

 80/i. Cirrus-sac ovoid v.ith narrow end outward, 174 to 277ju long by 92 to 

 102)U in diameter. Cirrus straight in outer half of sac, proximally coiled or 

 dilated. 



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

 wide, occupying the posterior half of the m.edian portion of early mature seg- 

 ments. Ova conspicuous, nuclei large, 10 to 13/z in diameter. Oocapt 34/i 

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

 join ventrally; conmion duct acts as reservoir. ViteUine folHcles entirely 

 within longitudinal muscles, discontinuous, interminghng 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 mth only a few 

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

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

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



Eggs, 80 to 98jLi long by 75 to 92)U wide, shell quite transparent. 



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

 coecum. 



