1922] 



H. A. Baylis and R. Daubney : Parasitic 'Nematodes. 



Til 



twenty pairs of preanal papillae, the most posterior of which is situated just anteriorly 

 to the corners of the cloacal opening. The postanal papillae consist of five pairs ; a 

 large, ventral pair of double papillae just behind the cloaca, and the remaining four 

 pairs on the posterior half of the tail, i.e., behind tlie constriction mentioned above. 

 Two of these latter pairs are distinctly ventral and two ventro-lateral. The spicules 

 are equal and simple (not alate). They measure 0*95 mm. in length. 



The tail of the female is blunter than that of the male, and measures 07 mm. in 

 length. The caudal papillae are situated at 0-2 mm. from the tip. The vulva is 

 situated in the anterior half of the body, dividing the latter in the proportion of 3:5. 

 The eggs measure o*o85-0'093 mm. X o - o58-o - 074 mm. 



In addition to the difference in the pulp of the dorsal lip, there are certain other 

 points in which this species diverges from P. depressum. The mature female of 

 P. depressum is much shorter in proportion to its thickness than the female of 

 P. angusticolle, and the vulva in P. depressum is situated further back r towards the 

 middle of the body, the proportion in which it divides the body being about 5 : 6. 



Porrocaecum serpentulus (Rud., 1809). 



(Fig. 11.) 



Examples of this species occurred in the common crane (Grus communis) and in 

 the demoiselle crane (Anthropoides virgo). The characters of the head, and more 

 especially of the dorsal lip, have been described and figured by von Linstow ((1899), 



Fig. 11. — Porrocaecum serpentulus. Tail of male; lateral view. 



p. 7; pi. I, fig. 9). The bifurcation of the anterior lobes of the pulp of the lip 

 appears to be less pronounced than is -indicated in his figure. Dentigerous ridges are 

 not, as he states, absent. In describing the tail of the male the same author 



