322 Mr. G. J. Arrow on the 
Amphisternus corallifer, Gerst. Found less commonly in 
the same locality as the last. 
Amphisternus bellicosus, Gerst., var. nov. laotinus. Nam 
Mat, Upper Mekong. This variety differs from the typical 
form in the red-tipped elevation rising from the middle of 
each elytron not being produced to asharp point. A. belli- 
cosus was originally recorded from Sumatra and Penang, 
but it appears to be a rather wide-ranging species with 
numerous local races. 
Amphisternus pustulifer, Gorh. Xieng Khouang. Only 
the female of this has been described. The male has 
much more slender antenne and legs, the front tibia bearing 
a very slight tooth in the middle of its inner face, and from 
that point to the end being compressed and clothed internally 
with close fine pubescence. The last ventral segment is 
broadly emarginate. 
Engonius gratus, Gorh. Luang Prabang: Paklay. Cam- 
bodia: Kompong Kedeh. Gorham gives the range of this 
species as from Bengal to Tenasserim. 
Exngonius opimus, Gorh. Luang Prabang. Also found in’ 
Burma. 
Engonius similis, sp. n. 
Niger, vel nigro-violaceus, elytris utrinque maculis transverse sub- 
ovatis duabus lete flavis ornatis, prima post-humerali paulo 
obliqua fere ad marginem externum attingenti, secunda ante- 
apicali breviori; elongatus, pronoto modice transverso, lateribus 
antice convergentibus, postice leviter divergentibus, angulis 
anticis prominentibus, posticis acutis; elytris sat crebre et dis- 
tincte punctatis, modice .convexis, extus anguste marginatis, 
lateribus haud fortiter arcuatis : 
g, tibia antica medio fortiter spinosa, intermedia post medium 
bene excisa, haud dentata, segmento ultimo abdominali fortiter 
haud late exciso. 
Long. 10-11 mm.; lat. max. 5 mm. 
Siam, Laos: Vientiane (R. Vitalis de Salvaza, June), 
Pak Leung (R. V. de Salvaza, Feb.). 
Engonius similis is closely similar to EZ. klugi, Gerst., and 
indeed almost identical in colour and markings, but it is a 
little more elongate, the prothorax less transverse, the elytra 
