36 PROCEEDIlSrGS OF THE NATIONAL MUSEUM vol.81 



APOPHALLUS DONICUS (Skrjabin and Lindtrop, 1919) Price, 1931 



Plate 9, Figubb 37 



Synonyms. — Rossicotrema donicuin Skrjabin and Lindtrop, 1919, 

 pp. 41-42; R. simile (Kansom, 1920) Ciurea, 1924, p. 14; Cotylo- 

 phallus venustus Eansom, 1920, p. 555; G. sirnilis Eansom, 1920, p. 



555. 



Description. — Apophallus: Body ovoid to linguiform in shape, 

 500/A to 1.14 mm long by 200fji to 'SdOfi wide. Cuticular scalelike 

 spines 4/x to 7.5/x long by 1.5ju to 3^^ wide. Oral sucker 65/x to 85/u, in 

 diameter; prepharynx very short; pharynx 30/x to 44/x, in diameter; 

 esophagus slender, bifurcating 135ja to 265ja from the anterior end of 

 body ; intestinal ceca simple, extending into posterior fourth of body. 

 Acetabulum 45/i, to 58/x long by 48/x to 60/i wide, situated 185/x to 

 560/1 from the anterior end of body. Testes oval or globular in 

 shape, 80fi to 200/x by 60)U to 200/i,, situated obliquely in extended 

 specimens, more or less opposed in more contracted specimens, and 

 occupying the posterior third of the body. Ovary 65ja to 140/i by 

 40/* to 120/A, situated 200/* to 750/t from the anterior end of body. 

 Seminal receptacle 60/i to 130/* wide by 35/* to 90/x long, situated 

 between the posteromedian border of the ovary and the antero- 

 median border of the left testis. Vitellaria well developed, extend- 

 ing from posterior end of body to slightly beyond the bifurcation 

 of the ceca. Uterus with few coils and occupying the intercecal 

 sjDace between anterior border of the left testis and the anterior 

 margin of acetabulum. Eggs 30fi to 35/* long by 16/c to 20/* wide. 



Hosts. — Canis familiaris, Felis domestica.^ Viilpes lagop^is^ and 

 Phoca vitulina. 



Location. — Small intestine. 



Distribution. — Europe and North America (United States). 



Reniarhs. — This description is taken from that of Ransom (1920) 

 for G otylophallus sifnilis, the specimens (U.S.N.M. Helm. Coll. No. 

 4279) upon which the description was based having been collected 

 from the harbor seal by Dr. Albert Hassall, in Washington, D. C, 

 December 21, 1905. The writer has compared these specimens with 

 specimens from dogs and cats and agrees with Witenberg (1929) that 

 there is no reason for regarding this form as a species distinct from 

 A. donicus {= R. donicum). 



APOPHALLUS ZALOPHI, new species 



Plate 9, FiGxmE 38 



Desc7'iption. — Apophallus : Body elongated piriform in shape, 435/i 

 long by 215/* to 263/i wide at the level of the ovary. The cuticle is 

 beset with small scalelike spines, 4/* long by 2/i wide, arranged in al- 



