48 STUDIES OF TETRIGINiE (ACRYDIIN-ffil). 
middle and pale annulations before the knees ; hind tibiae 
fuscous, paler above ; the first and third pulvilli of the 
posterior tarsi subequal in length. 
Male. —• Entire length of body 16*5 mm. ; pronotum 
15 mm.; post, femora 8 mm. 
Two examples; Mt. Matang, 3100 ft., May 1897 and 
1910. Sarawak Museum. 
A curious deformity appears in one of these specimens, 
in which the anterior border of the pronotum, instead of 
being truncate, is roundly depressed backward, as if shoved 
into the dorsum. Behind the front border there is a 
transverse wrinkle. 
Tegotettix, gen. nov. 
Head scarcely exserted. Vertex wider than one of the 
eyes, carinula on each side compressed cornuiform, face 
subvertical or scarcely oblique ; frontal costa not divided 
above the paired ocelli, the rami parallel, protuberant 
between the antennae ; antennae filiform, very long, articles 
strongly elongate, inserted far below the eyes; paired 
ocelli placed opposite the lower margin of the eyes; eyes 
globose, subsessile, aud moderately small; apical articles 
of maxillary palpi compressed, slightly expanded. Pro¬ 
notum deplanate above, between the shoulders cristate : 
median carina bearing a series of cornua, anterior margin 
truncate, posterior process lengthily extended beyond the 
hind femoral apices ; humeral angles prominent, dentate, 
carinse serrulate; posterior angles of lateral lobes strongly 
laminate expanded, obliquely truncate and subserrulate; 
elytra oblong, apices rounded; wings fully explicate and 
extended beyond the apex of pronotal process. Anterior 
and middle legs elongate, armed with strong denticles 
above, below compresso-lobate and serrulate ; anterior 
tibial margins compressed, outer carina lobate; middle 
tibiae compressed, strongly expanded lobate ; hind femoral 
margins above bilobate, below serrulate-dentate, the outer 
face armed with denticles; genicular spine acute; hind 
tibial margins compressed and minutely serrulate ; first 
and third articles of posterior tarsi equal in length. This 
remarkable genus resembles Tetticerus, Hancock; the type 
is T. armatus herewith described. 
T. armatus , sp. nov. 
Body rugose ; colour greyish; eyes subsessile. Vertex 
strongly wider than one of the eyes, concave, not advanced 
