Myriopoda from the Andes of Ecuador. 145 
the opposite side in a depression lying immediately behind 
the angle of the anterior furrow. 
The median sulcus on the sternites is much less conspicuous 
and the anal sternite has the posterior margin more concave. 
In the anal legs the femur is more cylindrical and the inferior 
spines are not so large; the patella is armed on its inner surface 
with two stronger spinules. The femur, patella, and tibia are 
about equal in length, but the tarsus is much shorter than 
the tibia ; the metatarsus is the longest segment of the legs 
and is composed of six or seven clearly defined segments. 
In the preanal legs there is a distinct metatarsal segment. 
Length 18 millim. 
Chimborazo (east side, 12,000 feet). 
Specimens of this genus are very rare in collections, and 
there is consequently not much known of the specific charac- 
ters of the group. I am inclined to think that in this case 
the only features to be relied upon for the separation of these 
two forms are those found in the shape of the sulci of the first 
tergite and of the anterior margin of the maxillary sternite. 
Those found in the anal legs are, I suspect, subject to indi- 
vidual or perhaps sexual variation. 
This species differs from azteca and long itar sis in having 
the anterior border of the maxillary sternite produced for- 
wards. It appears somewhat to resemble the former in the 
shape of the sulci on the first tergite. 
A second specimen obtained by Mr. Whymper on La 
Dormida, at an altitude of 11,800 feet, differs from the type in 
having ten metatarsal segments on the anal legs. In this 
particular it approximates to N. longitarsis , but until the form 
of the sulci of the first tergite in this species is known it is 
impossible to refer any species to it with confidence. 
DIPLOPODA. 
Stenonia rufipes (C. Koch). 
Platyrhacus rufipes , C. Koch, Die Myr. i. p. 96, pi. xliv. fig. 86. 
A single specimen at Nanegal (3000-4000 feet). 
C. Koch’s specimen was described as doubtfully coming 
from Brazil. This example from Ecuador agrees very closely 
with C. Koch’s figure of rufipes , except that the tergites are 
slightly smoother and the posterior series of granules smaller j 
the margins of the keels are in nearly every case quadriden- 
tate ; the posterior tooth, however, is sometimes bifid. 
