NEMATODE PARASITES OF BIRDS 



145 



Male with short, slender tail. Spicules of median length. 



Female with short tail. 



Life history. — Unknown. 



Distribution. — Europe (Ireland, Germany, and Italy (Portofer- 

 rajo)). 



This species is given as a synonym of P. ensieaudatum by numerous 

 authors but P. ensioauddtum has lateral membranes whereas they 

 are said to be absent in this species. It is therefore left as a distinct 

 species by the present writer, although it is unrecognizable from the 

 present description. 



yirai 



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2/S 



PORROCAECUM KIRGHISENS1S (Skrjabin. 1916) Cram, 1927 



Synonym. — Ascaris Mrghixensis Skrjabin, 1916; Ascaris 

 sen-sis Skrjabin, 1916 (evidently misspelled). 



Host. — Aquila imperialis. 



Location. — Small intestine. 



Morphology. — Porrocaecum 

 (p. 135) : Cuticle transversely 

 striated. Head with lips and 

 interlabia (fig. 215c). Lips 

 (fig. 2156) made up of 3 parts, 

 the central one with denticulate 

 e<]tre and with the pulp divided 

 into 2 equally large lobes. Two 

 small papillae situated far an- 

 terior on lips. 



Male 75 to 99 mm. long by 1.3 

 to 2 mm. wide. Tail (fig. 215 d 

 and e) conical, pointed; cloacal 

 aperture 500/x from end. Spic- 

 ules equal, 1.18 mm. long. Five 

 pairs of postanal papillae, the 

 most anterior pair of these com- 

 posed of double papillae. Four- 

 teen pairs of preanal papillae. 



Female (immature) 80 mm. long by 1.3 mm. wide. 



This species, according to Skrjabin, is closely related to P. depres- 

 sum but differs distinctly in the shape of the lips and the disposition 

 of the papillae on the lips. 



The allocation of this specie's to Porrocaecum is made tentatively 

 by the present writer' on the basis of Skrjabin's statement that it is 

 very close to P. depn fsitm. The main differential characters of the 

 two genera Porrocaecum and Contracae< -u//t. that is, the nature of 

 the esophageal appendages, not being known in connection with this 

 species, the allocation can not lie made with certainty but it is 



Figs. 214— 215.— 214, Porrocaecum hete- 

 roura. Anterior end (dissected). After 

 Creplin, 182!). 215a, Porrocaecum an- 

 gdillie. Anterior end (dissected). 

 After Linstow, 1890. 215 b to e, Por- 

 HOCAECUM kiri;h!Sens;s. 6, Lip; c, in- 



TEKl.AUII M ; (/. LATERAL AND C, VENTRAL 

 VIEW OF MALE TAIL. AFTER SKUJAUI... 



1916 



