chamberlin: the chilopoda of brazil. 193 



Caudal process of coxopleurae of anal legs very short; ending in 

 three or four spines or points, the coxopleurae being otherwise unarmed. 

 Pores very fine and numerous. 



First pair of legs with two tarsal spines. Second to nineteenth 

 pairs with a single tarsal spine. Prefemur of nineteenth legs dorsally 

 at distal end with a single spine; that of the twentieth with two spines; 

 the femur of the latter pair dorsally at distal end also with a single 

 spine. Prefemur of twentieth legs unarmed ventrally. 



Prefemur of anal legs with the corner process at distal end above 

 ending in two stout points or teeth; ventrally with five spines ar- 

 ranged in two transverse or somewhat oblique rows, a distal row, 

 composed of three spines, being at about the middle of length of joint, 

 and a more proximal one of two spines (or in three longitudinal rows, 

 2, 2, 1); mesally with three or four spines in two longitudinal rows; 

 and along dorsomesal edge with two spines in addition to a single 

 one more strictly dorsal. Femur with two spines on proximal half 

 along dorsomesal edge with a third one ventrad of these on the mesal 

 surface; and, in addition, also a spine at distal end on mesodorsal 

 corner. Claw with two basal spines which are very small. 



Length cir. 83 mm. 



Locality. — State of Matto Grosso: Madeira -Mamore R. R. camp 

 39, on the Rio Madeira! (W. M. Mann). 



This interesting species is evidently close to S. armata described by 

 Kraepelin from Venezuela (Maracaibo), with which it is characteris- 

 tically separated from all others now known. Among the more 

 important dift'erences between these two species, so far as the descrip- 

 tion of armata permits of comparison, may be mentioned the com- 

 plete absence of any spines on the twentieth legs ; the dense pubescence 

 of antennae on all articles distad of the fourth; the distinct punctation 

 of the first dorsal plate; the margination of the dorsal plates from the 

 eleventh to fourteenth caudad instead of from the eighteenth or 

 nineteenth; the absence of paired sulci passing entirely across any of 

 the plates; the presence of two spines at base of claw of anal legs 

 instead of but one, etc. 



SCOLOPENDRA POLYMORPHA Wood. 



Proc. Acad. nat. sci. Phil., 1862, p. 11; Kraepelin, Revis. Scolop., 1893, p. 241. 

 Scolopendra copeiana Wood, Journ. Acad. nat. sci. Phil., 1862, ser. 2, 6, p. 27; 



Pocock, Biol. Centr. Amer. Chilopoda, 1895, p. 19. 

 Scolo-pendra mysteca Humbert et Saussure, Rev. mag. zool., 1869, ser. 2, 21, 



p. 157. 



