071 Acari from the Lyings of Macacus rhesus. 



166 



The claws of the tarsus are well developed and strongly curved, 

 and the pulvillus extends between and considerably beyond them. 

 Average length of first pair of legs, xoo^^^ ^^ ^^ ^^^^^ j ^^ ^'^^ 

 second pair, j^o^h of an inch ; of the third pair, y^^^^ ^^ ^^ ^^^^ ' 

 of the fourth pair, jJo^^^ ^^ ^^ ^^^^^- ^^^^ stigmata are oval and 

 open on the ventral surface of the thomx between the third and 

 fourth legs. 



A dorsal shield or scutum is present, but is somewhat difficult 

 to detect in whole-mounted specimens. 



From the material I have so far been able to examine I have 



Tarsus of second leg of larva, x 500. 



obtained only two specimens that are probably males. I have 

 judged these to be males from their slightly smaller and more 

 slender build, plus the absence of the vulvar orifice and the 

 presence of a special anterior ventral orifice ; also the small anai 

 projection is within the margin and not, as in the nymph and 

 female, upon it. What is probably the male genital orifice can be 

 made out as a small circular aperture close behind the hypostome ; 

 and from it a tube can be traced, with some difficulty, leading 

 posteriorily for a certain distance beneath the ventral cuticle. This 

 tube is not easy to see in my specimens, and might from a casual 

 examination be mistaken for a longitudinal furrow. The average 

 length of body is 4\jth of an inch ; the width across middle of 



