56 Mr. R. V. Chamberlin en new ~ 
nintcenth or copulatory legs are stout and uncate ; second 
joint bearing a long, curved, digitiform process with a 
seta at tip; “third joint with a similar, but much shorter 
process at distal end on mesal side and with a longer and 
stouter, distally broad and blunt, prolongation from the 
disto-caudal surface; fourth joint with a conical process 
curving from the distal end of the caudal surface mesad, its 
apex approximate to that of the mesal process of the third 
joiut; Jast joint flattened ectomesally, curved, narrowing 
distad to a point. 
Length 18 or 19 mm.; width 8 mm, 
Locality— Borneo : Sarawak, Ladong (H. W. Smith). 
Type, Mus. Comp. Zool. (No. 4687). 
Spherotheride. 
TrocHOSOMA, gen. nov. 
In this genus the vulva resembles that of Australiosoma in 
having the basal picce divided into two distinct plates ; but 
of these the mesal one is much the longer, extending along 
the mesal side of the apical piece which it surpasses. The 
distal piece of the vulva is low and broad, with its line 
of junction with the proximal pieces very oblique. The 
anterior gonopods of the male with the immovable finger 
much shorter, rounded, uniarticul.ite and the movable finger 
biarticulate, its first joint short and provided with a short 
rounded process or spur simulating a minor immovable 
finger. lu the posterior gonopods beth fingers are uni- 
articulate, equal iu length, curving together and typically 
overlapping at the tip. In the legs there is a stout spine 
whove and remote from the claw. Antenne very short, 
composed of six articles of which the last is a little enlarged 
in the male, but not at all in the female ; sensory cones 
numerous. 
Genotype, 7. pelloceps, sp. n. 
Trochosoma pelloceps, sp. n. 
At present, after long preservation, the types are brown 
or somewhat testaceous above, with the anal plate and some 
of the more anterior ones in particular dusky ; each plate 
along its caudal border of a deeper, nearly blackish colour. 
Head, antenuee, and collum deeper in colour than the other 
parts. 
Antenne very short, flattened. In the female thickest at 
base, with the first article stoutest and of about the same 
