64 Mr. R. V. Chamberlin on new 
On other segments the transverse suture clearly marked 
throughout ; suture widely moderately curving opposite the 
well removed pore. Metazonites smooth above, with the 
usual striations above and below. The prozonites above 
with a network of chiefly trausversely placed impressed 
lines. 
Cauda of anal scutum much exceeding the valves, slightly 
upeurved at the tip (male). Valves with mesal borders 
strongly elevated and compressed. 
Stigma pits triangular, with angle forwards. 
Fourth and fifth joints of legs of male with the usual 
cushions. 
Number of segments (male) eighty-seven. 
Length (maie) about 210 mm. ; width 10°7 mm. 
Locality— Borneo : Sarawak, Poak, near Kuching (#7. WV. 
Smith). 
Type, Mus. Comp. Zool. (No. 4806). 
Thyropygus amphelictus, sp. n. 
‘The median plate of the gonopods in the form of a trans- 
verse band expanded into the usual triangular process at the 
middle, the distal margin each side of the triangle doubly 
curved, the end of the bar a little expanded. 
The outer lamina of the anterior gonopods only about 
half as long as the inner; the latter narrowed distad, the 
distal fourth a thinner, distally rounded plate with a slight 
angle at base on ectal side, but without spur or process. 
The posterior gonopod emerges at level of upper end of outer 
lamina of anterior gonopods, from there curving caudomesad 
and then cephalad, so that the greatly expanded terminal 
lamina is brought against the base of the inner plate of the 
anterior gonopod; from its mesal side below level of emergence 
arises a long spine or prong, which lies in a continuation of 
the gonoceel i in the inner plate of anterior gonopod ; it gives 
rise also to two prongs a little proximad of the expanded end 
region of which the ectal is shorter, stouter, distally black, 
and but little curved, while the mesal is slender, curves 
first mesad and then cephalo-ectad; the te erminal plate 
bears about six spines at its antero-mesal angle. 
The colour is shining black, with a very narrow stripe of 
dull red along the caudal margins of the metazonites; the 
covered part of prozonites testaceous, of green cast. Gollum 
with narrow reddish border both in front and behind. 
Head black above, the frontal and lower region with 
antenne brown, of somewhat ferruginous cast. Legs 
