232 RESEARCHES IN HEI^MINTHOLOCY AND PAR ASITOTXXIY. 



centimeter 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 cephalis end. The species may be dis- 

 tinguished as Filaria primana. 



4. Ascaris Oscn/ata, Rudolphi. — Body cylindroid, tapering in ad- 

 vance ; mouth with prominent lips ; caudal end incurved : tail short, 

 as wide as long, conical, obtuse. 



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

 by 2 mm. thick. 



From the Elephant Seal, Macrorliinus anif^ustirosfris, which died 

 at the Zoological Garden. Submitted by Dr. Chapman. 



5. Ascaris trayisfuga, Rudolphi. — Body cylindrical, moderately and 

 nearly equally tapering at both ends : head with narrow lateral ahe 

 and prominent lips. 



A female 6 inches long and a male 4 inches. 



From the Polar Bear, Ursus maritimiis, of the Zoological Garden. 

 Submitted by Dr. Chapman. 



6. Ascaris simplex, Rudolphi. — Body cylindrical, tail short, conical, 

 straight, with a minute mucro. 



One female 4 inches long by 1.5 mm. thick ; a multitude of young 

 with no males, generally from 20 to 50 mm. long by 0.3 to 0.5 mm. 

 thick. 



From the stomach of Mcsoplodou sonrrbiensis. Submitted by Dr. 

 Cooper Curtice, Washington. 



7. Ascaris spiculig era, Rudolphi. — Females to 45 nmi. long by 2 

 mm. thick ; tail short, acute. Males 30 mm. long by i mm. thick ; 

 tail short, incurved, acute. A pair of curved spicules exserted from 

 the genital aperture. 



Numerous specimens from the stomach of Pe/ccaJius fusrus, Florida. 

 Submitted by Mr. F. C. Baker. 



8. Ascaris diacis, n. s. — Body cylindrical, spirally rolled, pinkish- 

 white, translucent, with the brown intestine .shining through, smooth, 

 about equally tapering at the ends. Head without appendages : 

 mouth trilobed, with lobes large and rounded. Tail straight, coni- 

 cal, acute, without papillae. 



A female 70 mm. long by 1.25 mm. thick. Obtained by Dr. B. H. 

 Warren from the body cavitj', in the vicinity of the cloaca of the 

 Purple Grackle, Ouiscalus qiiisca/a, Chester county. Submitted by 

 Dr. Warren. 



\ 



