802 R. I. POCOCK 



of each somite; keels testaceous, antennae and legs brunneo- 

 fuscous. 



Body cylindrical , convex , keels of small size. 



P^ segment depressed , hardly keeled ; 2""^ segment with its 

 keeled edge produced below the level of the edge of the 

 first and third segments. Keels of tlie rest of the segments very 

 small, just above the middle of the side, represented merely by 

 a slight eminence which bears the pore ; those without pores 

 linear; the groove which separates the keel-bearing part of the 

 segment from the anterior part furnished above with a transverse 

 row of close-set, rounded granules; the upper surface of the 

 keel-bearing part marked above with a slightly sinuate, unbeaded 

 sulcus extending from the 4'" to the 18"'. The dorsal surface 

 smooth and shining; the surface beneath the keel finely gra- 

 nular at the anterior end of the body, smooth in the rest : the 

 inferior crest just visible on the anterior (2-5) segments. Caudal 

 process triangular, somewhat widely truncate, with small tuber- 

 cles. Sternite convex, the tubercles small. 



Sternal areas high, transversely sulcate, distance between the 

 legs of the last pair less than the length of the coxa. 



Legs longish, of moderate thickness, the trochanter and tibia 

 about equal in length and at least two-thirds the length of the 

 femur, tarsus a little longer than the femur, with strong claw ; 

 coxa about one third as long as trochanter. 



rf^. Legs thicker and longer, with the tibia longer than tro- 

 chanter and almost as long as the femur ; the anterior ones 

 not specially modified, without a distinct process on the sternum 

 of the 5."'. Copulalonj feel quite free at the base; the two 

 processes very complexly twisted round eacli otlier (cf. figure). 



Length c/", 9 about 21, width 2.5 mm. 



Loc. Rangoon and Tharrawaddy: many examples obtained by 

 E. W. Gates; Taikkyii in Pegu (Fea coll.). 



Genus Tetracentrosteriius, nov. 



Allied to Strongylosoma and Orthomorpha. 



Body slender: keels narrow and small; the transverse sulcus 



