45 



witli ventricle (bulb); males reaching 25 mm. in length and 

 having long double genital spirules; females attaining a 

 maximum length of SO mm. and with the vulva anterior to 

 the first third of the body length. ( )va O.OS mm. (stated 

 by Chatin O.S mm. evidently a mistake) in length and 

 0.07 1 mm. transversely, without reticulation of the shell. For 

 this material the author argues identity with Rudolphi's 

 original . l.vrr/n'.v li'/iln/it/'ni. 



On the other hand, Linstow (Arch. mik. Anat., Ix, p. 217; 

 PI. XII, Fig. 1) differentiates from Ascaris canis (Werner) 

 and Ascaris Icpfopfera, Hud., an allied species, under the 

 name Aaruri.* Iron in, having the following characteristics: 

 Lips with rather broad base, finely denticulated borders, 

 without interlabia. Dorsal lip broader than long, anteriorly 

 rounded, its papilla- relatively posteriorly situated; pulpa 

 with two lobules projecting anteriorly, each showing two 

 rounded anterior prolongations. A lateral alar expansion 

 on each side of head, attaining a width of 0.18 mm. anteriorly 

 and diminishing gradually and uniformly as it extends back- 

 ward (those of A. canis and A. leptoptera are narrow ante- 

 riorly and increase in width posteriorly to reach the body 

 wall in their posterior positions by a sharp and almost rec- 

 tangular curve). Males attain a length of 34 mm. and a 

 thickness of 0.99 mm.; esophagus 1: 12 of body length; 

 male tail acutely conical, with small digitate tip; the feebly 

 developed, small genital spicules, 0.83 mm. in length; 21 

 pre-anal and 4 postanal papillae in uniform lines, the anterior 

 ones 3.04 mm. in front of tip of tail. Females attain 53 mm. 

 in length and 1.38 mm. in thickness; caudal end lanceolate; 

 vulva at 5: 8 of body length. Ova with thick, smooth shell, 

 without markings; ova measure 0.086 mm. long and 0.062 mm. 

 in transverse diameter, and (a rare feature in genus Ascaris) 

 contain a fully developed larval worm. 



In the material from the Philadelphia Zoological Gar- 

 dens there were included ascarides from two lions. At 

 autopsy of the first (P. Z. G. Lab., 794), a lioness about 



