chamberlin: the chilopoda of brazil. 187 



portion. Last ventral plate narrowed caudad; sides straight; caudal 

 margin also straight. A little wider across anterior end than long 

 (ratio cir. 39:37). With a rather weak median longitudinal sulcus. 



Coxopleurae of last legs not at all produced caudad. Bearing one 

 or two closely approximate spines at mesocaudal angle ; none ectad of 

 this. Porose area not reaching caudal margin by a considerable 

 distance. 



Length of the two types 26 and 55 mm. respectively. 



Joints of the anal legs proximad of the tarsus strongly crassate as 

 usual. The first three joints longitudinally dorsally sulcate, the 

 sulci most distinct at distal ends and on the first two joints. Spines 

 of prefemur very small and difficult to detect; two present close to- 

 gether on dorsomesal corner of distal end; a single one in line with 

 the preceding two farther cephalad and three on the mesal surface 

 were detected. First twenty pairs of legs without tarsal spines. 



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

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



Two specimens. 



Evidently this species is related to C. impressus (Porat); but it 

 may be distinguished in having the cephalic plate equal in length and 

 breadth instead of distinctly longer (ratio 4:3), by having the last 

 ventral plate with a median longitudinal furrow, by having fewer 

 articles of the antennae glabrous and these less abruptly differentiated 

 from the others, etc. 



CoRMOCEPHALUS Newport. 



Trans. Linn. soc. London, 1844, 19, p. 275, 419; Meinert, Proc. Amer. philos. 



see, 1886, 23, p. 205; Kraepelin, Revis. Scolop., 1903, p. 184; Verhoeff, 



Bronn's Thierreich, 1907, 5, p. 262. 

 Rhombocephalus Newport (in part) Trans. Linn. soc. London, 1844, 19, p. 275, 



425. 



This is a typically Australian, Indian, and African genus, the single 

 species recorded from America having probably been introduced 

 from ships. 



CoRMOCEPHALUS AURANTiiPES (Newport). 



Scolopendra aurantiipes Newport, Ann. mag. nat. hist., 1844, 13, p. 99. 



Scolopendra subminiata Newport, Ibid., p. 100. 



Cormocephalus aurantiipes 'Newport, Trans. Linn. soc. London, 1844, 19, p. 420; 



