EIGHTH ANNUAL REPORT. 133 



in an orang-utan, and also in a chimpanzee, in which they occurred 

 in such numbers as to cause a fatal intestinal obstruction. 



An unidentified Ascaris from a black leopard (Felis pardus). 

 This parasite resembles the Ascaris lumbricoides of man, but is 

 somewhat smaller in diameter, but fully as long. 



Dochmius trigonocephala (Uncinaria). — Male, 9 mm. to 12 



DOCHMIUS TRIGONOCEPHALY, MALE 

 Caudal pouch magnified. 



mm. long; female, 9 mm. to 15 mm. long; caudal pouch trilobate, 

 the middle lobe being slender ; tail of female obtuse ; eggs ovoid. 



This parasite has, I understand, been very disastrous to a recent 

 importation of blue foxes (Vulpes la go pus) from Alaska in one 

 of our prominent American zoological gardens. 



Only two cases of this troublesome worm have come under my 

 observation among the Park animals. 



Of these cases, one of them was a Mearns' coyote, on autopsy. 



