384 



MR. STANLEY HIRST ON A 



ICHORONYSSUS SERPENTIUM, Sp. n. ? 



5 . Body long oval in shape. Dorsal surface furnished with 

 numerous hairs, which are not veiy long and are distinctly 

 curved ; apparently the fine little offshoot or hair present near 

 the end of the hairs of certain other species of Ichoronyssus (for 

 instance, on those of /. bacoti) does not occur on the hairs of this 



Text-figure 1 . 



Ichoronyssus serjpentitim, $ . Ventral view. 



species. There are two dorsal shields, the anterior one being 

 comparatively large (length -3 mm., width -27 mm.), but the 

 posterior one, which is situated far back near the hinder end of 

 the dorsal surface, is very small and inconspicuous. Outline of 

 (interwr shield shaped almost- like that pf ?i le^upp ; twenty hairs 



