— 129 — 



growth which is in coimeetion with the interior cavity of the 

 sucker, as it is seen in fig. 32. 



3) The interior walls of the oesophagus posteriorly to the 

 muscular suckers of the pharynx (about which Gendre men- 

 tions) are covered by chitinous formations wiiicli are charac- 

 terized by a uniform transverse striation. 



12. Strongyluris elegans Gendre 1909. 



This species described by Gendre from Chamaeleo was 

 found in the intestine of Chamaeleo No. 21. 



The spicula of the male in this species reached 0,985 mm. 

 in length. 



D. Fam, Oxyuridae. 



In the collection we are treating there were representati- 

 ves of the following genera of this family: 



1. Oxyuris Rud. 1803 (sensu lato). 



2. Oxijsoma Railliet et Henry. 



3. Isacis L e s p e s. 1 856. 



VIII. Genus Oxyuris Rudolph! 1803. 



In the present work I refer to the genus Oxyuris R u d. 

 (sensu lato) 7 species belonging to the collection under treat- 

 ment. Two of these forms are especially notcAvorthy. They 

 were found in the intestine of one species of myriapods, 

 Polydesmus. Prom the first aspect both parasites (females) 

 seemed to be very near to each other differing only in the 

 position of the vulva and the comparative size of the caudal 

 process. However a closer examination of the buccal appara- 

 tus (for wiiich purpose I had to use oil immersion [V12], 

 owing to the minute size of the head) proved clearly and 

 definitely that these were not only representatives of diffe- 

 rent species, but even of distinct genera, their buccal appara- 

 tus being formed on quite different lines. 



At present I did not consider it possible to establish the 

 new genera for these parasites, as, unfortunately, I had no 

 males at my disposal, and was obliged to refer them to ge- 

 nus Oxyuris Rud. (sensu lato). 



