2 SMlTHSOxMAN MISCELLANEOUS tOLLECTIONS VOL. 9I 



Seminal vesicle large, not divided by constrictions, its posterior end 

 lying near anterior margin of left testis. Testes globular, or slightly 

 wider than long, with zones and fields partly coinciding, left testis 

 a little in advance of right, situated in anterior part of posterior 

 third of body; right testis 92 to 120 fi long by lOO to 120 /* wide; 

 left testis 100 to 120 ju, in diameter. Ovary transversely oval, 40 to 

 48 /i. long by 60 to 62 fi wide, situated to right of median line and 

 about midway between right testis and gonotyl. Seminal receptacle 

 oval, immediately anterior to ovary. Vitellaria not abundant, con- 

 sisting of scattered follicles between level of ovary and posterior end 

 of body. Uterus long, filling postovarial portion of body. Eggs asym- 

 metrical, 34 to 36 ix long by 20 /x wide. 



Host. — Sida leucogastni. 



Location. — Small intestine. 



Type locality. — Fajardo Roads, between Palominos Island and 

 Fajardo, Puerto Rico. 



Type specimen. — U.S.N.M. Helm. Coll. no. 8694; paratypes 

 no. 8695. 



GALACTOSOMUM DARBYI," n. sp. 

 Plate I, figs. 3, 4 



Description. — Body elongate, 800 to 970 /x long by 140 to 200 /a 

 wide, usually showing a slight constriction at or near level of ovary. 

 Cuticula covered with spines except at posterior end of body. Oral 

 sucker 56 to 60 /x in diameter ; acetabulum absent. Prepharynx slender, 

 160 to 180 ju, long ; pharynx well develo|)ed, 40 to 44 ^ long b}^ 20 to 

 40 /i wide ; esophagus 24 to 40 /i long ; intestinal ceca extending to near 

 posterior end of ])ody. Cienital aperture jjreequatorial, median in 

 position or nearly so; genital sinus occupied by a piriform gonotyl. 

 the protrusible portion armed with several rows of fine spines. Semi- 

 nal vesicle elongate, S-shaped. more or less uniform in width, ex- 

 tending from genital aperture to level of posterior margin of ovary. 

 Testes globular, 60 to 100 /x in diameter, with zones and fields partly 

 coinciding, left testis slightly in advance of right, and situated about 

 midway between genital aperture and posterior end of body. Ovary 

 globular or transversely oval, 20 to 48 (x long by 40 to 60 [x wide, 

 situated anterior to, and in same field as. right testis. Seminal 

 receptacle postovarial, about same size as ovary. Vitellaria largely 

 intercecal, extending from level of posterior margin of ovary to near 



"Named in honor of Dr. George D. B. Darby, collector of the host from which 

 this species was taken. 



