312 Mr. M. Burr's Observations on 



margin bordered with black, and a black spot at the apex. Feet 

 slender, clear yellow, the knees black. Abdomen cylindrical, finely 

 punctnlated, lateral tubercles very distinct ; on each segment, at the 

 side, there is a smooth non-punctulate patch, resembling obsolete 

 tubercles : colour blackish-brown ; last segment slightly narrower 

 than the preceding, square, the hinder border straight, w'ith a small 

 tubercle above the insertion of the forceps on each side ; the outer 

 angles distinct. Pygidium small, obtuse, bifid at the extremity. 

 Forceps ^ with the branches slender, remote at the base, cylindrical, 

 nearly straight, subsinuate, black, the apices strongly incurved and 

 strongly crossing ; just before the middle on each branch above 

 there is a strong sharp tooth, pointing upwards and backwards ; seen 

 from the side the forceps are subsinuate. 



Hob. Siamese Malay Provinces, Nawnchik, Bukit 

 Bear, April 30tb, 1899. " From long grass." 1 $. 



This is a very handsome species, and I am very pleased 

 to dedicate it to my friend, Mr. Annandale. 



It is allied possibly to 0. dux, Borm., but differs in 

 colour and in the form of the forceps. Its very distinct 

 colour distinguishes it at a glance from any known form. 



The specimen is carded, and so it is impossible to 

 examine the under-surface. 



Opisthocosmia slieJfordi, sp. n. 

 Nigra, nitida ; antennse nigrse, baud annulatae ; pronotum capita 

 ffique latum, antice rectum, postice rotundatnm, nigrum, lateribus 

 pallido-marginatum ; abdomen nitidum, tuberculis lateralibus dis- 

 tinctis ; segmentum ultimum doi'sale parvum, declive, medio im- 

 pressum, supra insertionem forcipis utrinque tuberculatum ; apud 

 $ , inerme ; pygidium baud perspicuum ; forcipis bracchia, $ basi 

 remota, gracilia, recta, horizontalia, sensim incurva, medio margine 

 interno supra dente acuto, intus ac sursum spectanti, armata, apice 

 decussata ; $ , inermia, gracilia, incurva. ^ 9 • 



S 9 



Long, corporis . . . 7'3-9 mm. 8 mm. 



,, forcipis . . . 4-5-7'4 „ 4-5 ,, 



Hah. Sarawak, Kuching, i, iii, v, ix, 1900-3 



(Shelford). 4 ^, 1 ?. 

 Allied to 0. amcricana. 



Opisthocosmia tcmora, sp. n. 

 Nigra, nitida. Antennas . . . (5 segmenta restant) fuscT. Caput 

 fuscum, suturis valde perspicuis. Pronotum capite angustius. 



