TRÄOÄRDH. ACARI. 37 



— ilferM-moimt., in the rain-forest, 3000—3500 M., 21. XII. 05, 42 specimens; Meru- 

 lowlanHs, in the acacia forests al the river Ngare na nyviki, XI, 1905 14 specimens. 



— Umnibuni : Älonibo, VI 1906, 2 specimens. 



Troml)i(liuni siinilc n. sp. 



(PI. 2, figs. 2, 8—11 aiul 14—16.) 



Length 2,n7 mm. Width 1,46 mm. 



The shape is the same as that of T. sanguineum, with liigh bioad Shoulders. 



Tlie colour is a most beautiful orange-red. 



The dorsal side is densely clothed by hairs of a most peculiar shape, inserted 

 in very large cup-shaped pores. As a matter of fact the pores occupy a mach 

 greater space of the surface than what the interspaces do. The hairs are chiefly 

 of two kind, but there are numerous forms intermediate between the two. The 

 larger hairs (PI. 2, fig. 15) are two-jointed; the basal Joint is large and broad, thin- 

 walled and excavated at the top ; the distal edge is often provided with small teeth. 

 At the top of the basal Joint, but more or less to one side of it, the terminal Joint 

 is articulated. It bears on a slender, bare and curved peduncle a nearly globular 

 head clothed with fine hairs, arranged in about 20 longitudinal rows, the whole 

 structure resembling very much a shaving-brush. The shorter hairs (PI. 2, figs. 14 & 

 16) have a very short and wide basis and globular, pear-or cucumber-shaped heads 

 which bear very fine and short hairs, arranged in longitudinal rows. Two pairs of sessil 

 eyes (PI. 2, fig. 9) enclosed within the same, chitinous and finely punctui'ed ring; 

 the anterior pair is not half as large as the posterior one. The crista metopica 

 (PI. 2, fig. 10) has a very simple structure. It is straight and narrow and widens only 

 at the hind end to a subtriangular pseudostigmatic area, which has a pair of 

 short, setiform pseudostigmatic organs. 



The palps (PI. 2, fig. 2) are rather short and of the same general shape as 

 those of T. hipectinatum Tgdh. The 4*'^ Joint has a dense interior (median), row or 

 comb of strong, shghtly curved and pointed bristles and is provided exteriorly, near 

 the base, with a long straight, pin-shaped bristle, which projects forwards to a level 

 with the base of the terminal claw. The terminal claw of the 4*'' Joint is short, 

 rather narrow and blunt; at its base there is a smaller d:o of similar shape. The 

 5*i» Joint is narrow, widens slightly towards the distal third; it exceeds the 4"' Joint 

 by '/6 of its own legth. 



The mandibles (PL 2, fig. 8); the lower jaw with very broad base and 

 strongly curved; the upper jaw is a thin, vertical, triangulär blade, with straight dorsal 

 and rounded ventral edge. The legs (PI. 2, fig. 11). The tarsus of the first pair 

 of legs is long and thickened. 



ilferu-mountain, in the rain-forest, 3,000 — 3,500 M., 8 specimens. 



TroiuJ)i(lium merueiise n. 8p. 



(PI, 2, fig. 18.) 



Larva. Length 0,9 mm. Breadth 0,72 mm. 



