— 124 — 



while only species: Trispiciilascaris lielicina (M o 1 i n \ 860) 

 from the intestine of the crocodile. 



8. Trispiciilascaris helicina (Molin 1860). 



The caudal end of the male provided with 4 pairs of pre- 

 anal and 5 pairs of postanal papillae is quite correctly described 

 and drawn m Drasche's work. However, the latter mentions no- 

 thing about the chitinous parts of the male genital apparatus — 

 the spicula and the gubernaculum. 



2 spicula of equal size, 1,36 mm. long. They have the 

 character of fine, very thin, curved, rod-like formations 

 the anterior end of which looks like a hilt and is 0,02 mm. 

 wide; after the hilt the spicules thicken slightly (width= 

 0,06 mm.) and are accompanied by a tender transparent alate 

 membrane which is lost in the posterior half of the spicula. 

 Lastly, behind this dilatation the spicula narrow again, their 

 width being only 0,014 mm. The posterior part of the spicula 

 terminates by a thin curvature. 



The most interesting peculiarity of this species is the pre- 

 sence of a gubernaculum in the male— this organ, as it 

 is known, is not to be found in Ascaridae. It has the shape 

 of an acute-angled triangle with the apex directed posteriorly; 

 its anterior half is provided with a furrow on its ventral sur- 

 face which serves for the spicula to slide on it. Length of 

 gubernaculum=0,22 mm. 



V. Genus Orneoascaris nov. gen. 



In the intestine of an amphibian {Biifo sp.) I^rof . D o g i e 1 

 and Sokolov found an Ascaris a detailed investigation of 

 which leads to its separation into a new genus named by 

 me Orneoascaris n. g. The reason for that was the structure 

 of the caudal end of the male, and particularly the character 

 of the caudal papillae, spicula, and the presence of a wide 

 caudal bursa, together with the very complicated mosaic 

 drawing of the cuticle on the ventral surface of the caudal 

 end. 



Diagnosis: 



Ascaridae of middle size, the mouth opening of which 

 is surrounded by 3 large lips provided with dentated margin 



