CHAMBERLIN: THE CHILOPODA OF BRAZIL. 189 
in Brazil, fide Meinert; but a reference to the paper cited fails to 
reveal any record of the species from the country by the latter author 
and the species is accordingly here omitted. The names falling as 
synonyms in this genus are very numerous. The known Brazilian 
species may be separated by means of the following key. 
Key to Species. 
a. First dorsal plate with a deeply impressed transverse cervical 
sulcus which may be nearly covered by the head. 
b. Prefemur of the twentieth legs (as also sometimes of some of 
the immediately preceding pairs) armed on dorsal side at 
distal end one to several spines; prosternum with a fine sul- 
cus across anterior portion. 
e. Dorsal plates from the sixth or seventh caudad distinctly 
margined laterally. 
d. At least eight or ten basal articles of the antennae 
glabrous, the others finely pubescent, the hairs not 
in rows; coxopleural process with nine spines or 
pote) Sees temibers a Saale S. gigantea Linné. 
dd. Only four or five basal articles of antennae glabrous; 
hairs of the others often in streaks or rows; points 
of the coxopleural process fewer. 
e. Ventral plates without longitudinal sulci; margina- 
tion of dorsal plates beginning at seventh segment; 
femur of twentieth and also of nineteenth legs with 
one or two spines at distal end above. 
S. angulata Newport. 
ee. Ventral plates of second to twentieth segments 
with two deep longitudinal sulci crossing the entire 
length of plate; margination of dorsal plates be- 
ginning with the fifth; femur of twentieth legs 
lacking spine at distal end above. 
S. viridicornis Newport. 
ec. Margination of dorsal plates beginning only with the 
eleventh to fourteenth segment. 
; Four basal articles of antennae glabrous, the others 
densely pubescent; none of dorsal plates with sulci 
passing across entire length; claw of anal legs with 
two minute basal spines........ S. explorans, sp. nov. 
