— 127 — 



papilla lias the same position. All the post-anal papillae are 

 sessile, without stalks. 



Two spicula of equal size; length of spicula=l,l9 mm., at 

 a width of the base=0,02 ram., width of middle part=^ 

 0,017 mm. Such tender, brittle and thin spicula are an excep- 

 tion in Ascaridae, most of which are characterized by strong 

 chitinous parts of their genital apparatus. 



Gubernaculum — absent. 



Female: 48 — 51 mm. long, 1,2 mm. maximum width at 

 the level of the genital aperture. 



In the region of the posterior part of the oesophagus the 

 width of the body reaches 1,19 mm., at the level of the ex- 

 cretory opening — 0,6 mm., near the anus=0,54 mm., behind 

 the lips=0,5 mm. 



The oesophagus reaches 6,54 mm. in length, the excretory 

 opening is situated at a distance of 1,0 mm. from the cepha- 

 lic end, and the genital aperture — in the anterior half of the 

 body at a distance of 17,5 mm. from the head. The anal 

 aperture is nearly terminal. The caudal end is bluntly roun- 

 ded. The eggs are oval, pretty large, 0,12 mm. long and 

 0,085 mm. wide. 



C. Fam. Heterakidae Raill. et Henry 1914. 



In the material under investigation there belong to this 

 family 2 forms which represent the following genera: 



1) Siibulura Molin 1860. 



2) Strongijluris A. M tiller 1894. 



The latter genus is referred by prof. Railliet et Henry 

 (in the paper of 1914 printed in the works of the IX Zoolo- 

 gical International Congress in Monaco) to a subgenus of the 

 genus Heterakis Duj. 1845, which I consider to be incorrect, 

 inasmuch as all the representatives of Strong yluris are cha- 

 racterized by such typical characters that they may quite 

 justly be taken for generic characters. 



VI. Genus Subulura Molin 1860. 



In the collection there was only one species of this genus: 

 Subulura suctoria (Molin 1860). 



