ea, 
3 
, 
the Erotylid Coleoptera of Indo-China. 297 
29. Micrencaustes navicularis, sp. n. 
Nigra, nitida, singulo elytro fascia transversa anteapicali rufa 
ornato, fascia haud arcuata, antice et postice acute dentata, ad 
marginem internam et externam haud attingenti; modice elongata, 
nitida, capite parvo, clypeo angusto, fortiter crebre punctato, 
fronte minutius et parcius punctata; pronoto ubique minute sed 
distincte punctato, lateribus leviter arcuatis, antice convergentibus, 
angulis anticis acutis, posticis rectis; scutello brevissimo sed postice 
angulato; elytris distincte sat laxe seriato-punctatis, postice 
attenuatis; prosterno valde acuminato, mesosterno linea semi- 
circulari impresso, tibiis apice haud spinosis. 
Long. 13-5-15 mm.; lat. max. 6-6-5 mm. 
Laos: Pou Bia (Jan.). 
This is another species of the group in which the middle 
tibiae are not spinose at the end. It is the only species of 
the genus known to me of which the pattern consists of a 
red posterior band only. This band is exactly transverse, 
interrupted at the suture, and has a triple emargination of 
its front edge and a double emargination of its hind edge 
upon each elytron. The insect is only of moderate length, 
but tapers rather more markedly than usual both before 
and behind. The elytral striae are distinctly but not 
closely punctured. The mesosternum bears an impressed 
semicircular stria. 
30. Aulacochilus quadripustulatus F. 
TonkIN : Hoabinh (Aug.). Laos: Luang Prabang (Nov.). 
31. A. episeaphoides Gorh. 
Laos: Luang Prabang, Pou Bia (Dec., Jan.). 
A common species in Assam and Burma. 
32. A. luniferus Guér. 
Laos: Luang Prabang, Ban Nong, Muong Sai, Pou Bia 
(Dec., Jan., Mar.). 
33. Aulacochilus sternalis, sp. n. 
Cyaneo-niger, haud nitidus, elytris fascia lata rufa basali, 
utrinque puncta dua nigra (quorum majore humerali ad 
marginem conjuncto) includente, fasciaque angustiori postmediana 
valde sinuata ornatis, fasciis vix ad latera attingentibus, antica 
ad suturam interrupta, postica fere integra; oblongo-ovatus, con- 
