A. C. onvEMAXS, NOTES ON ACARI. 285 



and pointed, the niediîin one sliglitly longer, equal wide 

 throughout, distally truncate or even sliglitly excavate. 8 t y 1 i 

 long, of usual shape. 



Mandibles short, reaching when wholly retracted the 

 second pair of dorsal rodlike-hairs. Chelae (fig. 38) singular, 

 remembering those of the deutonynipha (tig. 18), especially 

 the upper jaw. Tibial sense 'organ slightly before the joint 

 of the low^er jaw. Slightly before this sense-organ we may 

 observe the dorsal notch between the tibia and basitarsus 

 (upper jaw). This jaw, normally high at its base, is narrowed 

 in the middle, provided with the tarsal sense-organ, before 

 this organ with 3 rather small and blunt incisors, and behind 

 it 3 small triangular canine-teeth, and a kind of molar Avith 

 two blunt points. Lower jaw with the large end-incisor, 3 

 long (not high) canine-teeth, all directed backward and increa- 

 sing in height backward. A long blade-like molar, which forms 

 scissors with a similar l)lade in the most posterior part of 

 the upper jaw. 



Maxillae. Underside of rostrum (fig. 39) 

 with the usual 4 pairs of hairs and with about 9 transverse 

 rows of minute triangular dents. Hairs I rather far from the 

 horns, of usual shape. Hairs H and HI strong and long, not 

 next to each other, but after each other ; hairs H proximally 

 and distally bent like a knee, and directed forward ; hairs III 

 proximally two times bent like a knee in inverse sense, and 

 directed backward. Hairs IV are wavy bristles, directed for- 

 ward. The real h y p o s t o ra e trapezoidal, with notched edges ; 

 horns small, sharp ; inner malae divided in two parts, an 

 inner and an outer one ; the inner part again bifid, of which 

 the outer tooth in the longest (fig. 30 to the left) ; the outer 

 part is a slip which is bent inward and at the same time 

 provided outward with a fan-shaped fringe. Palps; dorsally 

 the femur, which is much thicker than the trochanter (fig. 34) 

 provided with the usual middle-hair and the usual transparent 



