(dr. a. c. oudemans). notes on acari. 121 



Dorsal side (Fig. 21) provided with numerous minute hairs 

 which are arranged in 8 longitudinal rows, four of them parallel 

 to the edges of the body, the other limiting a nearly dumpbell- 

 shaped space. 



Ventral side (Fig. 22). Sternigenital shield with outgrows between 

 the legs, with long markings simulating a long narrow shield, within 

 which only 5 pair of extremely minute hairs are planted. Peritrematic 

 shield (tho the right of fig. 22) reaching behind coxae 111 and fused 

 before the head with that of the opposite side. Metapodial shield 

 occupying the space between the peritrematic, sternigenital and 

 ventrianal shields, rounded posteriorly. Ventrianal shield a little 

 more than half a circle, anterior edge slightly convex. Anus 

 quite posteriorly. Sufflexed margin of dorsal shield (fig. 22 

 on the right) notched; each notch with an extremely minute hair. 

 Peritrema first directed outward, then between the stigma and the 

 edge suddenly forward, tlien suddenly inward, then suddenly 

 obliquely outward and forward; before reaching the edge it turns, 

 running obliquely inward and backward, then it turns slowly for- 

 ward, till it reaches at a level before the coxae I the oblique edge 

 of the body. — To the left of fig. 22 I have drawn the coxae 

 and the pits for the legs. — Tritosternum with one feather 



(Fig. 2.'î). 



Epistoma (Fig. 24) a long oval blade partly between the two 



coxae of the palps ; with a long mucro at its top, with serrate edge. 

 Mandibles minute, without any striking particularity. 

 Maxillae. Hypostome (Fig. 25) short, wide, with distinct median 



line of demarcation between right and left coxal plate. Horns 



sm.U, curved outward, sharply pointed. Outer malae twice longer, 



with external spur opposite the tops of the horns, acute distally. 



Inner malae lanceolate. No central slip. Palps: trochanter ven- 



trally with 2 feather-like hairs. 



Legs. Femurs with blade (Fig. 27, = femur I). Little spurs 



are on femur I doisally, the end of tarsus I (fig. 26), and to the 



sides of tarsi II, III, IV, genu III and IV. — 

 Habitat ? (On Frosopis brevicorms). 



