290 



Mr. R. T. Pocock on some 



about four times as long as wide, with 

 its proximal end above and a strong 

 granular throughout and about two 

 thirds the length of the second segment, 

 which is smooth and polished. Falpi 

 about equal to the mandibles in length, 

 the tibia one third longer than the tarsus; 

 finely granular above and below; the 

 tibiae longer than the patella, the pro- 

 tarsi nearly half the length of the tarsi ; 

 lower surface of first tarsus distal ly 

 finely scopulate, much swollen in the 

 middle of its length ; tarsus of fourth 

 with a rounded tubercular knbb on its 

 posterior (inner) surface at the proximal 

 end, and from this a short tooth-like 

 process projects forwards and upwards. 



Length 3*8 millim., width 2'5. 



Loc. Punduloya, Ceylon {E. E. 

 Green) . 



Differs from Pettalus cimiciforviis 

 (Cambridge) in its relatively weakly 

 lobate " tail " and much smaller pro- 

 cess on the fourth tarsus. A second 

 smaller specimen, obtained by Mr. Green, 

 has no process on the fourth tarsus, and 

 the last tergite scarcely lobate and not 

 grooved. This specimen is probably 

 either young or a different sex from the 

 type. 



a transverse crest at 

 prominence below, 



<3> 



of 



Fig. 3. — Coxal area 

 iStiflocellus lionotiiff. 



Fio-." 4.— Ditto of Petta- 

 lus brevicauda. 



Fig. 4 a. — Last tergite of 

 Pettalus brevicauda. 



Genus Stylocellus, Westw. 



Stylocelhis, Westw. Thesaurus Ent. Oxon. p. 200, pi. xxxvii. fig. 7(1874). 

 Leptopsidk, Thor. Ann. ^lus. Genov. xviii. p. 23 (1883). 



Judging from the species of this genus that I have had 

 an opportunity to examine, the sternal region of tiie cepha- 

 lothorax diflcrs in some important and jjuzziiiig particulars 

 from the same area in Pettalus. The stomotheca is closed 

 behind by the coxa? of the second pair of legs, which, like 

 those of the first pair, have their inner edges strongly 

 elevated. Moreover, the coxte of the legs of the fourth pair 

 apparently meet each other in the middle line in front of the 

 large transversely rcniform genital aperture, and separate it 

 from a small sternal plate, which is wedged in between the 

 coxaj and second pair of legs. The genital aperture is bounded 



