the Erotylid Coleoptera of Indo-China. 301 
Cyrtotriplax becomes a synonym of Tritoma F. In his 
subsequent ‘“ Revision’ (1876) Crotch reverted to 
the European 7. bipustulata F., but Kuhnt’s Catalogue, 
attributing the name Cyrtotriplax to Gorham, adopts the 
latter’s extraordinary proposal to use Crotch’s name for 
Oriental species only. Another genus, Pseudotritoma, was 
made by Gorham in 1888 for Oriental species mistakenly 
referred to Tritomidea Mots. (a synonym of Huxestus) by 
Crotch, but without any attempt to differentiate it from 
Tritoma. Two species (atripennis and xanthosticta Gorh.) 
remain in the catalogue under T'ritomidea, to which they 
are not related. Another series of species was separated 
by Gorham as Triplacidea. His genus Phoxogenys, the 
affinities of which he failed to elucidate, is scarcely dis- 
tinguishable from Cyrtomorphus, as at present understood. 
39. Tritoma bella Kuhnt. 
Laos: Vien Poukha (May). Tonkin (Kuhnt). 
Determination of this is quite uncertain, for Kuhnt’s 
few words do not really amount to a description. 
40. T. basimaculata Kuhnt. 
Unknown to me. 
41. T. nigripennis Mots. 
This is very probably the Burmese species named 
Cyrtotriplaz cebana by Gorham, and nothing is given 
in the fragmentary description of TZ. atripennis Kuhnt 
by which that can be distinguished from 7. cebana, 
except rather smaller size, to which no particular impor- 
tance need be attached, but Kuhnt’s name in any case 
is invalid, having been previously used by Gorham. 
ToNKIN (Kuhnt). 
42. T. oppositipunctata Gorh. 
Kuhnt has recorded this from Tonkin, but it is possible 
his insect is a form of 7’. vitticollis, mentioned later. 
43. Tritoma vitticollis, sp. n. 
Nigra, pronoti lateribus late, prothorace et abdomine subtus, 
antennarumque articulis 2, 3 et 4 flavibus, elytris plerumque leviter 
aeneis; oblongo-ovata, nitida, capite sat fortiter punctato, clypeo 
margine recto, oculis haud parvis, prominentissimis, pronoto medio 
distincte, lateraliter subtilius, punctato, marginibus laterajibus 
TRANS. ENT. SOC, LOND. 1921.—PARTS III, IV. (JAN. 22) X 
