TWO NEW TREMATODES 213 



on right side of body; length of hook 0.08 mm. Oral sucker simple, very- 

 weakly developed in adult but more evident in immature specimens; 

 pharynx 0.234 mm long by 0.156 mm wide; intestinal ceca with lateral 

 branches reaching to lateral edges of main body, extending into the 

 "stalk" all the way to the haptor; unbranched in the "stalk." 



Genital pore median, 0.903 mm from anterior end (in 24.7 mm 

 specimen). Two vaginal pores, ventral, about halfway between midline 

 and body sides, about ^ distance from atrial pore to beginning of vitel- 

 laria in adult specimens, but only about ^ this distance in a subadult 

 specimen. Testes about 125 in number, rounded to slightly irregular, close 

 together, in a rather short, intercecal area at posterior end of main body. 

 Seminal vesicle a slightly sinuous tube leading in midbody line directly 

 to base of the short cylindrical cirrus opening through the genital atrium. 

 Genital spines lacking. 



One ovary on each side of midline immediately anterior to testes; 

 testes in contact with ovary posteriorly and laterally. Each ovary a set 

 of slender tubes extending more or less laterally and branching near their 

 tips. Ovaries slightly unequal in size. Vitelline glands in sides of body 

 from near posterior end of testes to about 2.15 mm from anterior end of 

 body (in 24.7 mm specimen). Vaginae not observed in adult except in 

 sections. Seminal receptacle lacking. Uterus filling most of main body, 

 with lateral extensions. The uterus could be interpreted as sac-like and 

 multilobed, with lobes separated by stroma-like cellular strands of tissue 

 which may form partial partitions even in the lateral lobes themselves. 

 A longitudinal, dorso-ventral partition divides the uterus almost wholly 

 into right and left halves, each of which has branches or lobes reaching 

 almost to the sides of the body and frequently forked near the end. In 

 fact, the possibility of two uteri could not be ruled out by study of the 

 material available. Near the anterior end of the uterus, this longitudinal 

 septum appears to be only ventral and here the dorsal portion of the 

 uterus has every appearance of a median stem with lateral branches. 

 Brinkmann (1952) interprets this unique uterus as saccular and "septate 

 with pouches between the septae." Eggs have only a very thin membrane. 

 Largest eggs measured 116 to 129 by 65 to 70 /;,. Embryos evidently 

 hatch before eggs are laid or immediately after. They grow rapidly and 

 arc almost fully developed in anterior regions of the uterus. About j^ 

 of the body of the embr>'o forms a haptor with 16 larval booklets. 



The excretory system was not observed. 



The name multitesticulatus indicates the numerous testes. 



Discussion: Brinkmann (1952b) named the superfamily Chimaeri- 



