24 



BULLETIN 69, UNITED STATES NATIONAL MUSEUM. 



which in stained specimens are deepl}' stained and form a conspicu- 

 ous cone-shaped structure in the cirrus pouch or in the genital cloaca. 

 Female rejyroductive orgmxs. — Vagina (figs. 12, 13, vag.) enlarged 

 after crossing the excretory canals, to form a seminal receptacle (figs. 

 12, 13, 8em. recept.)^ varying greatly in size in different segments. 

 Ovary (fig. 12, ov.) in central portion of segment, sac-like, faintly 

 bilobed, somewhat elongated transversely. Yolk gland (fig. 12, y. g.) 



V. def. 



vag 



senit recept 



h 



1 inni. 



Fig. 13. — Liga beasiliensis : Gravid segment, c. p.. Cirrus pouch, sem. recept.. 

 Seminal receptacle, ut.. Uterus, vag.. Vagina, v. def., Vas deferens. 



about 100/x in diameter, nearly round, or reniform. Shell gland 

 small, inconspicuous. Gravid uterus (fig. 13, vt.) consists of a thin- 

 walled sac with many small, incompletely separated lobules or out- 

 pocketings, filling nearly the entire middle field of the segment 

 excepting a small anterior portion occupied by the vas deferens. 

 Eggs (fig. 14) with a thin outer shell with a tubular process at each 



