TRACARDII, ACARI. 



33 



slender liairs, wliieh are so very finely hairy that great magnification is necessary 

 to notice the hairs; aniongst tlie hairs there are interspersed .stouter and biunter, 

 brown-coloured bristles. Two pairs of sessil eyes of eqnal size, and enclosed within 

 the sanie chitinous ring. The crista metopica is long and straight (PI. 2, fig. 12.) 

 and projects in a narrow bar behind the posterior pseudostigmatic area. The an- 

 terior pseudostigmatic area is large, oval and highly raised; it continnes lorwai'd 

 in a narrow, thinwalled, fingershaped projection which bears one terminal and one 

 median bristle. The area itself is provided with 10 long bristles and a pair of long, 

 setiform pseudostigmatic organs. On the crista, at equal intervals between the areas, 

 two pairs of large bristles are inserted. The posterior area is nearly triangulär, 

 with rounded corners and highly raised surface; the pseudostigmatic organs are long, 

 setiform and bare and attain the length of the distance between the areas. The 

 rostrum is short, conical and pointed; the ventral side provided with nearly bare 

 bristles ; at the top there is a semicircular, dense row of hyalin, lanceolate, flat and 

 curved bristles, the edges of which are sawshaped. The palps are long and slender 

 (PI. 2, fig. 5); the ratio length of the 2"^', 3''l and 5*'^ joints is 15 : 8 : 5 and the 

 height of the 2"«^ and S'''* is 7:4. The 5*'' Joint is oval and rounded, with narrow 

 base. The claw is shorter than the 5*^ Joint and provided with a basal tooth. The 2""^ 

 Joint is richly provided with long, perpendicular hairs on the external side ventrallj^ ; 

 its dorsal side with large bristles anteriorly. The 3"' Joint has 7 long, curved bristles 

 on the dorsal side. 



The legs. The length of their joints will be seen from the foUowing tabelle. 



Legs I are thicker than the others. 



Mem, 2 specimens. Küimnndjaro: Kibonoto 1300 — 1600 M., 1 specimen. 



Erytliripus Dugesi Nie. 



Kilimandjaro: Kiboscho, on the mountain-lawns near the upj)er limit of the 

 Vegetation, 3400—4000 M. ö specimens. 



The species is recorded from Alger and Eg3'pt. 



Erythrspus aroolatiis n. sp. 



(PL 2, fiic. 2(1.) 



Larva. 



Length varjäng from 1 to 1,4 mm.; width from 0,n to 0,76 mm. 



Shape long oval, anteriorly a little broader in the younger specimens; in the 



Sjöetedl Kilimandjaro!- Meru Expcditimi. 20. 5 



