East-Indian Chilopoda and Diplopoda. ris: 
truncate, Antenne short and very thick, the widths of joints 
being comparable to their lengths. Surface of head strongly 
roughened with pittings and irregular corrugations; a broad 
median longitudinal ridge over the lower frontal and the 
clypeal region. 
Collum margined below and up to level of eye in front. 
Median region of plate strongly roughened; the borders, 
especially the anterior one, smooth. 
Segments closely striate beneath, the striz on the pro- 
zonites towards level of pore oblique. Pores near sutures. 
Tarsal pads thick, over entire length of tarsus, pro- 
jecting as a free lobe distally. Claws very long, each with 
a long spine above it aud a pair of shorter ones below. 
Anal valves strongly compressed above but nearly level 
below, the inner borders above thereby appearing strongly 
elevated. Cauda cylindrical, distally rounded, a little 
thicker dorso-ventrally toward end than at base. 
Number of segments about fifty. 
Width-(male) 6 mm. 
Locality.—‘“‘ Gulf of Siam” (G. V. Fow). 
Type, Mus. Comp. Zool. (No. 4859). 
PLOKAMOSTROPHUS, gen. nov. 
Like Trigoniulus in having the tarsi of the anterior legs 
of the male with pads beneath. May be distinguished from 
that genus in having the coxal plates of the anterior 
gonopods short, not prolonged as in 7rigoniulus, and much 
exceeded by the telopodite; the latter broad throughout, 
with a thickened mesal border rising a little further distad 
than the main plate, but nothing like the cornuate, curved, 
terminal prolongation of Trigoniulus. The anterior gonopods 
suggesting those of Sympastrophus, but a mesal branch 
of telopodite not separated as in that genus. Each arm of 
median plate embracing the base of the gonopod as in the 
latter genus; basal or outer lobe free at the mesal end as a 
short lobe. Ventral plate of posterior gonopods in form of 
au angle or curved arch with vertex distad, articulating with 
gonopod at each end. 
Genotype, P. mindanaonus, sp. un. 
Plokamostrophus mindanaonus, sp. n. 
Appearing very dark, the prozonites being blackish, with 
the metazonites obscure ferruginous, a series of blacker areas 
about pores along each side. Legs obscure ferruginous. 
