300 ~~ Mr. cil, J. Arrows Lvst of 
tato, marginibus Jateralibus bene elevatis, elytris distincte striato- 
punctatis, lateribus reflexis; prosterno haud acuminato, utrinque 
inter coxas stria inciso, mesosterno etiam utrinque stria arcuata 
inciso, metasterni medio fortiter punctato, linea Jongitudinali 
impresso, abdominis segmento ventrali basali utrinque stria sat 
brevi obliqua inciso. 
Long. 7-5—10-5 mm.; lat. max. 4:5—5-5 mm. 
Uprer Mexonea R.: Pou Bia (Jan.). 
This is extremely similar to A. gavanus Guér. and of the 
same size and shape. The pattern is the same, but the 
elytral spot adjoiing the scutellum is placed a little 
farther away, so that it is quite separated from the sutural 
line, and the postmedian black band is not completely 
detached from the lateral black border as in A. javanus. 
The lateral striae of the mesosternum are longer than in 
the latter, but the coxal lines of the first ventral segment 
are shorter, not bending round parallel to the hind margin 
as in that species. 
37. Aulacochilus janthinus Lacord. 
Laos: Luang Prabang, Vien Poukha, Sala Pang Yok 
(March, April, May). Inpia. Matayan Reciron. 
I am unable to distinguish A. sericews Bedel from this 
very common and widely-distributed species. 
38. Amblyopus vittatus Oliv. 
TonkINn : Hoabinh (Aug.). . 
This is also very abundant and widespread in the 
Oriental region. 
Genus TRITOMA. 
The species of this genus are extremely numerous and 
of practically world-wide distribution. In the recent 
catalogue of Kuhnt they are scattered under various 
generic names. It appears to me impossible to separate 
the genus Triplax, the difference being one of superficial 
form only, a feature which is subject to almost infinite 
variation. The genus 7riloma was created by Fabricius 
in 1775 for T. bipustulata and other species. On the 
ground that Fabricius’ genus was not that of Geoffroy, 
Crotch in 1872 renamed it Cyrtotriplax, designating T. 
bipustulata as the type. In 1873 he named an American 
species (humeralis F.) as the type; but since Geoffroy’s 
names (not being uniformly binomial) are not now accepted, 
