410 PROCEEDINGS OF THE ACADEMY OF [1890. 



NOTICES OF ENTOZOA. 



BY JOSEPH LEIDY, M. D. 



1. Ascaris lumbricoidcs Linne. 



2. Trichocephalus dispar Rudolphi. 



3. ? Filaria primana n. s. 



In the dissection of an Orang, Simia satyrus, which died in our 

 Zoological Garden, Dr. H. C. Chapman found in the intestines sev- 

 eral worms (Proc. 1880, 166), which were submitted to my exami- 

 nation. Three seem in no respect to differ from the ordinary Asca- 

 ris liimbricoides ; one of the specimens being 18 centimeters long. 

 One from the coecum seems to be Trichocephalus dispar. The 

 occurrence of these parasites of man in a near relative outside the 

 genus is an interesting fact. 



Three other worms are unknown to me and I am in doubt as to 

 their generic character. They are females, and measure up to 26 

 centimeters long by 2'75 millimeters thick. They are more robust 

 than species of Filaria commonly are, and in this respect are more like 

 EiLstrongylus gigcis. Although neither of these usually live in the 

 intestine, I provisionally refer the worms to the former genus. The 

 body is nearly uniformly cylindrical, being 2*5 mm. thick one centi- 

 meter back of the cephalic end, gradually increasing to 2*75 mm. 

 and behind, slightly tapering to 2 mm. one centimeter from the tail 

 end. The head is rounded conical, with the mouth as a central pore 

 enclosing a minute papilla and unarmed. The tail is blunt conical. 

 An anal aperture was not detected ; but the genital aperture appears 

 near the cephalic end. The species may be distinguished as Filaria 

 primana. 



4. Ascaris osculata Rudolphi. 



Body cylindroid, tapering in advance ; mouth with prominent 

 lips ; caudal end incurved ; tail short, as wide as long, conical, 

 obtuse. 



Ten females from 25 mm. long and 1 mm. thick to 60 mm. long 

 by 2 mm. thick. 



From the Elephant Seal, Macrorhinus angustirostris, which died 

 at the Zoological Garden. Submitted by Dr. Chapman. 

 6. Ascaris transfuga Rudolphi. 



Body cylindrical, moderately and nearly equally tapering at both 

 ends ; head with narrow lateral alae and prominent lips. 



