388 
steriorly. The last pair (fig. 3d) is very robust; the femur is con- 
siderably shorter than the trochanter, a little thicker than long and 
somewhat shorter than the tibia, which is slightly more than one 
half longer than thick. The tarsus is very robust, two thirds 
longer thån the tibia. The hairs on coxa' and trochanter are bira- 
mous with slender brånches; the seta on the tibia is nearly three 
times shorter than the joint. 
Copulatory Organs. They åre nearly two and å half times 
longer than thick; seen from in front (fig. 3f) the interior margin 
is rather convex, the outer concave;' the distal portion is strongly 
produced, acute. Seen from the side (fig. 36) the front margin is 
sinuate, convex in the proximal and concave in the distal half, the 
hind margin nearly straight; the distal part is strongly produced, 
. acute. 
Length. The adult male measures -7 mm. 
Locality. Isl. Koh Chang (Gulf of Siam), under stones, Jan. 
12. 1900 (Dr. Th. Mortensen leg.). 
Remarks. By the struéture of the appendages of the lower 
antennal branch, the shape of the styli, the anal plate, etc., this 
species is easily smsen from all. other forms. 
14. ses mee h.S6p. 
Vs hg da 
Matérial. One adult and tolerably'preserved female. 
Head (fig. 4 åa). The eyes "åre very lårge, twice as long as 
broad and even åa little more thån' one half longer than the di- 
stance between them. — The hairs in the two anterior rows are 
considerably clavate, the outer pair in the second row moderately 
long, the other somewhat shorter. The hairs in the third row and 
the submedian pair in the fourth row are wanting in my specimen; 
the two outer pairs in the fourth row are distinetly clavate, the 
intermediate hairs slightly more than half as long as the eyes and 
a little longer than the sublateral pair. 
" Antennæ (fig. 4 å). " The' upper one of the front hairs on the 
