SCOLOPENDRIDES. 31 
This species is unknown to me in nature, but trom de Saussure’s figures and descrip- 
tions the following differential characters may be made out :— 
In the anal legs, the femur, patella, and tibia are subequal in length and, taken 
together, longer than the tarso-metatarsus; the femur, patella, and proximal end of 
the tibia are densely hirsute ; the upper inner edge of the femur is furnished with a row 
of four spines, the under surface with a row of four larger spines; patella armed beneath 
with a single median spine, and the tibia with three median spines; the proximal 
segment of the tarso-metatarsus is distally narrowed and passes into an indistinctly 
multi-segmented antenniform portion. 
Nothing, unfortunately, is said about the arrangement of the sulci on the first 
tergite. 
2. Scolopendrides stolli, sp.n. (Tab. III. figg. 4, 4 a-c.) 
Colour pale eastaneous, the terga slightly infuscate. 
Head elongate, narrowed anteriorly, its posterior border strongly convex, its posterior half marked with two 
fine parallel strie. 
Antenne rather short, attenuate, hirsute at the base, pubescent elsewhere. 
Cowal plate of the maxillipedes narrowed and produced forwards in tront, angularly excised. 
Terga sparsely but noticeably punctured, the first marked anteriorly with an arched transverse groove, which 
reaches posteriorly to the middle of the plate, the area in front of and behind this groove marked with two 
parallel continuous sulci; the second only sulcate quite in front; the rest (7.¢. to the twenty-second) 
normally marked with four sulci, but in addition furnished with a median longitudinal keel. 
Sterna with the usual median groove and the lateral posteriorly abbreviated groove on each side, the transverse 
groove obsolete. 
Anal somite: tergum neither sulcate nor carinate, its sides elevated and parallel, its posterior border a little 
produced mesially ; plewre not closely punctured, the posterior process smooth, hirsute, moderately long, 
its apex slightly upturned ; sternum wide, nearly parallel-sided, its posterior border straight ; legs longish, 
about as long as the head and first eight terga; the femur, patella, and tibia subequal in length, the 
latter slightly the shortest ; the protarsal segment about half as long as the tibia, the tarsus about as wide 
as the protarsus, almost as long as the femur and tibia taken together; the femur compressed and cari- 
nate below, hairy, notched and sulcate above, posteriorly its inner edge armed with a few minute spinules, 
armed below with a series of 5 or 7 spines, of which the 4 posterior extend at equal distances throughout 
the greater length of the segment, the rest being inconstant (1 on one leg, 3 on the other) and placed at 
the anterior end ; patella also compressed below, armed in its anterior half with two spines, this segment 
also notched above posteriorly. 
Rest of the legs hairy, the twenty-second pair long, very hairy, not spurred, with the tarsus completely divided ; 
tarsi of the rest incompletely segmented, armed below with one spur, the tibia armed distally with two 
or three spurs. 
Length about 35 millim.; of anal leg 10 millim. 
Hab. Guatemaa, Quezaltenango (Stoll). 
This species, of which only a single specimen is known, may be easily recognized 
from S. mexicanus by having the inner edge of the anal femur and the lower edge of 
the tibia unarmed, and by the presence of two spines on the lower surface of the 
patella. 
