Genera and Species of Millipedes. 437 
rior half of the body taking the form of smooth rounded teeth 
or tubercles. 
Copulatory feet (as in fig. 11) much shorter and less curved 
than in dultensts, with the inner terminal flagellum angled 
at the base and strongly curled. 
Measurements in millimetres—Total length 65; width of 
fifth segment 11°5, of second 11. 
Loc. Borneo. 
HOopLURORHACHIS, gen. nov. 
First tergite broadest in front of the middle, but the ante- 
rior angles not produced, 
Dorsal surface of segments finely granular or coarsely 
coriaceous ; the three rows of tubercles visible, the posterior 
the largest ; margins of keels entire; pores remote from the 
margin. 
Caudal process broad, posteriorly strongly tridentate, the 
lateral angles and the middle being strongly produced. 
Sterna from seventh segment armed with four long poste- 
riorly or downwardly directed spines. 
Distal end of copulatory organ shorter than hairy basal 
ramus, bent at right angles to it and trifid. 
Type H. Everettit. 
Differing from allied genera (Acanthodesmus &c.) in 
having the lateral angles of the caudal process produced 
and spiniform. 
Hoplurorhachis Everettii, sp.n. (Figg. 12, 12a, p. 441.) 
Colour black or deep brown, the dark colour spreading 
on to the keels at least as far as the pore; the rest of the 
keels and legs and antennz and the processes of the tail 
flavous. 
Length of antenne a little less than width of second 
segment. 
Anterior end of body rapidly increasing in width poste- 
riorly from the first to the fifth segments. 
Anterior border of keels (e. g. of twelfth segment) thick- 
ened, shouldered basally, anterior angle rectangularly rounded ; 
posterior border finely crenulate, the angle subacute, a trian- 
gular prominence at the base ; pore separated from the lateral 
margin by at least four diameters; posterior border of this 
keel on a line with the posterior border of the segment ; tail 
narrow, with prominent processes. 
Copulatory foot with straight basal ramus ; terminal portion 
broad, giving off internally a wide short lamina, externally a 
longer posteriorly projecting lamina, and bearing in addition 
