386 ON A PARASITIC GAMASID MITE. 



plate pear-shaped, and it has the three usual hairs on its surface. 

 Peritreviie slender and rather short ; it reaches a little further 

 forwards than the coxa of the third leg. Fingers of chelicera 

 short, and apparently without any trace of teeth. Legs. First 

 leg the longest, and the fourth leg also long, the legs of the 

 second and third pairs being shorter. Yentral sui'face of coxse 

 without any strong spurs, only fine setae or hairs being present. 

 There is, however, a very slight projecting spinule at the distal 

 end of the inner surface of the coxa of the first leg. 



Length "9 mm. 



Colour (in spirit) reddish brown. 



Material. Five female examples found on a Couper's Snake in 

 the London Zoological Gardens (May 5th, 1909). 



