570 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. 57. 



back to the anterior borders of the ovary and vitellaria, dorsally 

 covering all the organs in this portion of the body, except the semi- 

 nal receptacle, seminal vesicle, and ends of the intestinal ceca. Eggs 

 light brown, thin-shelled, averaging 21 by 11 [x in diameter. 



Host. — Pelecanus onocrotalus. 



Location. — Intestine. 



Locality collected. — Cairo, Egypt. 



As Looss (1907, p. 490) remarks, this species is very closely allied 

 to the genus Ascocotyle. It is especially like Ascocotyle nana else- 

 where described in this paper, and although it is of somewhat smaller 

 size it could scarcely be distinguished from the latter, were it not that 

 oral spines and oral cecum are absent in P. genata and present in 

 Ascocotyle nana. If P. genata should be shown to possess an oral 

 cecum, even though it were very small and rudimentary, and if cir- 

 cumoral spines, which might be small and easily lost, should be dis- 

 covered, this species would then undoubtedly fall into Ascocotyle. 



BIBLIOGRAPHT. 



Alessandeini, G. 



1906. Su di una specie del gen. Ascocotyle Lss. rinvenuta parassita del 

 cane. Nota preventiva. Boll. Soc. zool. ital., Roma, vol. 15, ser. 2, 

 vol. 7, 12 agosto, pp. 221-224. 

 Bbaun, Max. 



1901e. Zur Keuntnlss der Trematoden der Saugethiere. Zool. Jahrb., Jena, 

 Abt. f. Syst., vol. 14, 18 Marz, pp. 311-348, pis. 19-20, figs. 1-17. 



ClUREA, J. 



1915. Ueber einige neue Distomen aus dem Darm unserer Haustiere und 

 des Pelikans, fur welche die Fische als Infektionsquelle zu be- 

 trachten sind. Ztschr. f. Infektionskr. . . . d. Haustiere, Berl., vol. 

 16, 1. Juni, pp. 445-458, figs. 1-3, pi. 1, figs. 1-4. 

 1915. Nachtrag zu meiner Arbeit : " Ueber einige neue Distomen aus dem 

 Darme unserer Haustiere und des Pelikans " usw. Idem. vol. 17, 

 17 Aug., pp. 108-112. 

 CoBBOLD, Thomas Spencer. 



18660. Tapeworms (human entozoa), their sources, nature, and treatment. 

 vi+83 pp., 15 figs. 12"'°. London. 

 Ckeplin, F. C. H. 



1825a. Observationes de entozois. x-f86 pp., 1 pi., 17 figs, octavo. Gry- 

 phiswaldiae. 



DiESING, K. M. 



1855c. Neunzehn Arten von Trematoden. Denkschr. d. k. Akad. d. Wis- 

 sensch., Wien, math.-naturw. CI., vol. 10, Abt. 1, pp. 59-70, pis. 1-3. 

 FiscHOEDER, Franz. 



1903/'. Die Paramphistomiden der Saugethiere. Zool. Jahrb., Jena, Abt. f. 

 Syst., vol. 17, 9 Feb., pp. 485-660, figs. A-Q, pis. 20-31, figs. 1-104. 

 Jagerskiold, L, a. 



1899a. Distomum lingua Creplin, ein Genitalnapftragendes Distomttm, 



Bergens Mus. Aarb. (1898), Hefte 2, pp. 1-16, 1 pi., figs. 1-A. 

 1903a. Scaplianocephalus expansus (Crepl.), eine genitalnapftragende Dis- 

 tomide. 16 pp., 3 figs,, 1 pi., 5 figs, octavo. Upsala. (Results of 

 the Swedish Zool, Expedition to Egypt and the White Nile, 1901 

 (23).) 



