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. 
soc., 1886, 23, p. 205; Kraepelin, Revis. Scolop., 1903, p. = Verhoeff, 
Beonn’ 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; 
