NO. 6 NEW TREMATODE PARASITES PRICE 3 



posterior end of body. Uterus long, extending posteriorly in a series 

 of short transverse loops to near posterior end of body, where it turns 

 and extends anteriorly in a similar manner, passing between testes 

 and between testes and ovary to its termination in the genital sinus. 

 Eggs oval, 22 to 24 /x long by 12 to 14 /* wide. 



Host. — Pelecanus occidentalis occidciitalis. 



Location. — Small intestine. 



Type locality. — Levantade Keys, Samana Bay, Dominican Republic. 



Type specimen. — U.S.N.M. Helm. Coll. no. 8699; paratypes 

 no. 8700. 



Galactosomum joJuisoni differs from 6". darhyi in the position of 

 the seminal receptacle and in the shape and size of the eggs. In the 

 former species the seminal receptacle is preovarial and the eggs are 34 

 to 36 /x. long and asymmetrical, whereas in the latter species the 

 seminal receptacle is postovarial and the eggs are 22 to 24 jx long and 

 symmetrical. The shape of the eggs and the position of the seminal 

 receptacle also serve to distinguish G. johnsoni from other species of 

 the genus. G. darhyi may be distinguished from the other species 

 of Galactosotnum, viz, G. lactenni (Jagerskiold), G. erinaceum (Poir- 

 ier), G. cochleariforme (Rudolphi), G. cochlear (Diesing), G. semi- 

 fiiscum (Olsson). G. spinetum (Braun), G. aharonii (Witenberg), 

 and G. baylisi (Nazmi), in the position of the genital aperture, which 

 is near the intestinal bifurcation in G. darbyv and much farther pos- 

 terior in the other species. There are also other differences, but these 

 will not be discussed in this paper. 



A comparison of the species of Galacfosontuin described in this 

 paper with Stictodora .wwakiiiensis. a s])ecies described from Larus 

 sp. in Egypt by Looss (1899) and reported from dogs and cats in 

 Palestine, also from Puffinus kiihli from Suez by Witenberg (1929). 

 shows such close relationships that it appears doubtful whether Stic- 

 todora should be retained as a valid genus. 



Family MICROPHALLIDAE 

 LEVINSENIELLA MINUTA, n. sp. 



J^atc I, fiR. 5 



Description. — Body triangular, 153 to 180 ji long by 105 to 112 jli 

 wide, flattened dorso-ventrally. Oral sucker subterminal, 23 to 25 fx 

 in diameter ; acetabulum 22 to 27 fi in diameter, situated about one 

 third of body length from posterior end. Prepharynx apparently 

 absent ; pharynx moderately developed, 10 to 18 /x in diameter ; esoph- 

 agus 18 to 36 fi. long: mtestinai ceca relatively wide, terminating at 



