chamberlin: the chilopoda of brazil. 217 



distal end a stout, bluntl.^' rounded, tooth and also bulging in a 

 small well-rounded eminence near the proximal third where there is 

 indication of a suture such as is frecj^ucntly present (apparently of 

 trochanter) . 



Lateral margin of prosternum parallel for most of their lengtli, in- 

 curving only toward caudal ends. Prosternum a ver^- little wider 

 than long (ratio cir. 18:17); longer than the femur on outer side in 

 about ratio 17:11; anterior margin bearing two low and rounded, 

 strongly chitinous, teeth; hairs very sparse. (Plate 6, fig. 3). 



The paired sulci of the tergites distinct; in addition to these a 

 median longitudinal sulcus may be e\ident in the anterior region. 

 Prescuta very short in the anterior region, becoming moderately long 

 in the median and posterior regions. Hairs mostly very short. 



Spiracles all circular. The first one distinctly larger than the 

 second, the others gi-adually decreasing caudad as usual. 



First pair of legs reduced, being shorter and decidedly more slender 

 than the second. Posterior pairs of legs relatively but very little more 

 slender than the anterior ones. A small third tarsal division simulat- 

 ing or corresponding to the extra one of the anal legs is evident on all 

 legs but especially the more posterior pairs; it is short and consider- 

 ably more slender than the preceding one. 



Anterior ventral plates with a rather deeply impressed median 

 longitudinal sulcus which extends entirely across the plate. First 

 ten or eleven sternites produced caudad into a wide triangular process 

 or lobe which fits into a recess in the anterior border of the succeeding 

 plate in each case. Ventral pores not detected. 



Last ventral plate very wide ; trapeziform, the sides slightly convex 

 anteriorly but substraight for most of length, strongly converging 

 caudad; caudal margin straight. (Plate 6, fig. 7). 

 ItiCoxopleural pores consisting of two large pits on each side; of 

 these pits the anterior one each side is wholly covered by the ventral 

 plate and the caudal one is covered excepting for a small portion. 

 (Plate 6, fig. 7). 



Anal legs much longer than the penult; slender in the female. 

 Second joint of tarsus long and slender; the third very short and 

 abruptly more narrow. (Plate 6, fig. 7). Pairs of legs in the type 

 thirty-seven. 



Length 13 mm. 



Locality. — State of Para : Para ! (Mann and Baker) . 



One female specimen was secured. 



