34 APACHYID^. 



branches are regularly curved and arcuate, sickle-sliaped, very 

 slightly thickened at the apex itself. 



Length of body (without anal process) . . 40 mm. 29-39 mm. 

 „ forceps (with anal process) . . 5-7 „ 4-7 „ 



Bhutan : Maria Basti (Paris 2Ius.) ; Sikkim (Lid. Mus., coll. 

 Burr); AssAM (Brit. 3Ius.) • BuRMA : Karen-ui, Keba District, 

 3000-3700 ft., May to Dec, 4000-4500 ft., Jan. (Genoa Mu^., 

 Brii. Mus., coll. Burr) ; ToNKiN (coll. Gadeau, coll. Burr). 



Type in Genoa Museum. 



Larva. 



The author has examined three nymphs, one of which, being 

 considerably larger than the others, may perhaps be in the penulti- 

 mate instar. In this specimen the anal process is simply a long 

 acute triangle, the tenth ventral segment only visible as a trian- 

 gular area on each side of the base of the anal process, as in the 

 imao-o ; the ninth ventral segment is obtusely rounded posteriorly ; 

 the other segments have the posterior border truncate, except the 

 basal three, which have it sinuate. The radiate structure of the 

 wings is visible on the metanotum, which is deeply but roundly 

 emarginate posteriorly ; the mesonotum is truncate posteriorly 

 and anteriorly, the sides convex ; the forceps are gently arcuate 

 and do not overlap. The total length of the body to the apex of 

 the anal process is 38 mm. 



The two undoubted nymphs measure respectively 36 mm. and 

 37 mm. ; the form of the mesonotum is the same as in the larger 

 specimen, but the lateral convexity is more pronounced and 

 distinctly suggests incipient elytra ; the radiating wings are 

 distinctly visible on the metanotum, showing the first dorsal 

 segment beyond it. 



The form of the anal process is almost that of the adult female. 



The ventral surface of one agrees with that of the larger 

 specimen — that is, the eighth segment is convex posteriorly, 

 only it is obtusely triangular rather than rounded. This specimen 

 has therefore the full complement of dorsal segments behind 

 this convex one, and is therefore probably a male. 



In the other specimen the eighth ventral segment, also the seventh, 

 is gently rounded, and the sixth is very distinctly produced in the 

 form of a triangular lobe passing over the seventh to the edge of 

 the eighth ; the specimen is therefore probably a female, and in 

 the imago this triangular lobe completely conceals the seventh, 

 eighth and ninth segments. In both these specimens the ventral 

 part of the tenth segment is the same as in the adult. 



I can find no other signs of sexual differentiation in either the 

 anal process or forceps, which decidedly resemble those of the 



