520 MR. ¥. G. SINCLAIR ON THE [DeC. 3, 



small tubercles. Surface of head covered with short stiff hairs, 

 especially towards the upper lip. Frontal furrow deep, reachiug 

 from posterior of head to the level of antennae. Antenuse 

 reaching to 3rd tergite. 



1st tergite 2 mm. long by 5 mm. broad. Keels well developed ; 

 angle sharp, about on a level \\ith the keel. Edges of keel 

 not so much bent upwards as those of the 2nd somite. The 

 anterior margin of the keel is rouuded-off, following the curve of 

 the anterior margin of the tergite. 



2nd tergite barely 1| mm. long by 5| broad. Keel much 

 pointed posteriorly, the point reaching to about the middle of 

 the succeeding somite. Edge of keel more turned up than in 

 the first. 



^rd Sf 4th tergites. Length Ig mm., breadth o|. External 

 edges of keels curve upward ; traces of the strong thick margin 

 appear. 



5th tergite. This tergite shows the shape and dimensions of the 

 remaining ones. Its length is 2 mm. and breadth 6 mm. The 

 contrast between it and the preceding ones is very great. 

 Keels turned up at the edges and a thick margin on the anterior 

 border. The tergite is divided by a well-marked transverse 

 furrow reaching to the bases of the keels. 



The plexiral keels have the form of a ridge in the first four 

 somites ; in the fifth they become a tubercle. 



The anal tergite has the form of a truncated cone, with two 

 very prominent tubercles at the two corners. 



The amount of taper towards the tail may be judged from the 

 following measurements : — 



i6th tergite (i mm. 



17th „ 5| „ 



iSth „ 5 „ 



19th „ 31 „ 



Sterna smooth ; the basal elevated portion, from v.'hich the legs 

 arise, has a strongly marked median longitudinal furrow, which is 

 still ap]5arent in the last somite. The femur is 2| times as long 

 as the trochanter. 



Strongylosoma skeatii, sp. nov. (Plate XXXI. fig. 39, and 

 Plate XXXII. figs. 96, 97, 100.) 



Erom Tapelung, Patalung State. 



Length about 22 mm., breadth 3-^ mm. 



The specimens are difiicnlt to measure, as they are tightly 

 curled up ; I do not, however, think the error is great. 



Colour a dark ferruginous brown. Head, ]st somite, and the 

 greater part of the antennae almost black. Sterna, legs, keels, 

 and two small circular spots just above the antennae yellow. 

 The back is ornamented with two pale stripes, which, in the 

 keeled part of the somite, diverge, so that the posterior ends are 

 considerably more separated thaji the anterior. On the cyhndrical 



