522 Mr. R. I. Pocock on the Morphology and 
basal segment pale; head deep brown, labral region flavous ; 
legs flavous, distally infuscate. 
Antenne incrassate, third segment twice as long as the 
fourth, which is about equal to the sixth in length and to 
two thirds of the fifth. 
Eyes consisting of 15 circular separated ocelli, arranged in 
three vertical series of 3, 6, 6, the short row the innermost 
of the three. 
Terga coriaceous, with fine polygonal ornamentation ; 
lateral area of keel-bearing portion furnished with arched 
striz, with the concavity upwards. Keels with anterior 
border convex, posterior concave; anterior angle widely 
rounded, posterior acute. 
Length 6°5 millim., width barely 1 millim. 
Loc. South India: Kodeikanal, in the Palnai Hills (J. R. 
Henderson). 
The females of the four described genera of Heterochor- 
deumidz, of which Pocockia is unknown to me, may be 
distinguished as follows :— 
a. Segments without keels or lateral tuberculiform 
PLOMIMENCES A .f7. cis Haken see eae eieer Pocockia. 
6. Segments with keels or large lateral tuberculiform 
prominences. 
a’, Segments with very wide depressed keels 
equalling the median area in width and 
carrying the external setiferous tubercle on 
their lateral borders; this tubercle remote 
from the others which remain upon the 
median tergal ‘areat!. ss ase a cee Heterochordeuma. 
b'. Segments with small, sometimes tuberculiform 
keels, at least in the mid-region of the body ; 
these keels less than half the width of the 
median tergal area; tubercles on the middle 
segments laterally aggregated, the external 
not remote from the rest. 
a?, On the median segments the internal tu- 
bercle the largest; on the posterior segments 
the tubercles are lateral in position, the in- 
ternal tubercles being widely separated in 
the middle line 
Bestest ab Bis d corks bard 6% 0 Hendersonula. 
b?. On the median segments the external tu- 
bercle the largest; on the posterior seg- 
ments the internal tubercles not lateral but 
narrowly separated mesially ............ Huttoniella, 
ITuLoipea. 
Genus Monco.ivu.vs, nov. 
gd. Appendages of first pair (fig. II. 1, app. 1., and la, 
p. 524) consisting of five segments only, the first three short, 
