52 
STUDIES OF TETRIGINiE (ACRYDIINiE). 
Genus Tetrix, Latr. 
Latr. Hist. Nat. Crust. Ins. iii. p. 284, 1802 ; Acrydium 
of Geoffr. 1762; Tettix of Charp. Germ. Zeitschr. Ent. iii. 
p. 815, 1841 ; &c. 
T. contractus , Bol. 
Paratettix contractus , Bolivar, Ann. Soc. Ent. Belg. 281, 
1887. 
Many examples from Kuching, Matang Ed., Sadong, 
Mt. Penrissen. Sarawak Museum. 
This species has the vertex subwider than one of the 
eyes, the median carina little produced; frontal costa 
distinctly sinuate between the eyes; antennae very short; 
the anterior and middle femoral margins undulate ; the 
third pulvilli of the posterior tarsi as long as the first and 
second united. 
T. polypictus, sp. nov. 
Similar to variegatus, Bolivar, but differing in several 
respects, and it has longer antennae than in contractus , 
Bol. Yari-coloured, fuscous, pale variegated, often bimacu- 
late on the dorsum behind the disc, or again presenting 
a median pale fascia above, common in many members of 
the genus Tetrix . Head little exserted. Vertex equal in 
width to one of the eyes, slightly narrowed forward, 
advanced about as far as the eyes, frontal carinulae sub- 
convex-truncate, in front view concave; median carina 
very little produced; frontal costa divided above the 
paired ocelli, narrowly sulcate, extended almost to the 
vertex, in profile slightly produced beyond the eyes, in¬ 
distinctly sinuate just below the vertex and convex-arcuate 
between the antennae; paired ocelli placed between the 
middle of the eyes; antennae long, articles elongate, in¬ 
serted between the lower angles of the eyes. Pronotum 
truncate anteriorly, lengthily subulate posteriorly, passing 
beyond the hind femoral apices; dorsum subtectiform be¬ 
tween the shoulders; median carina compressed, per- 
current, elevated, and often barely biundulate on the 
disc ; posterior angles of the lateral lobes subacute tri¬ 
angular, not produced outward as viewed from above; 
elytra subovate, the apices rather narrowly rounded; 
wings long and extended beyond the pronotal apex. An¬ 
terior femora elongate, margins subentire or indistinctly 
undulate, minutely crenulate; hind femoral margins 
minutely crenulate; first and second pulvilli of posterior 
