the Erotylid Coleoptera of Indo-China. 289 
puncturation being rather finer, except a few large 
punctures near the base of the pronotum. The punctura- 
tion of the elytral intervals is extremely minute, and the 
rows of punctures are generally less evident. The pronotum 
is very convex, about half as wide again as its length, with 
acutely produced front angles. The lower surface is much 
less strongly punctured than in either M. vitalisi or affinis, 
the sides of the prosternum alone being strongly punctured, 
the metasternum almost smooth and the abdomen shining 
but scantily punctured. The antennae are shorter than 
in M. vitalisi, not extending beyond the base of the pro- 
notum, but the club is loosely articulated. Joints nine 
and ten are twice as broad as they are long. 
5. Megalodacne affinis, sp. n. 
Nigra, singulo elytro fasciis duabus rufis ornato, antica obliqua, 
bis ad basin attingenti, postice dentata, postica transversa, sub- 
apicali, antice et postice medio dentata; oblonga, modice elongata et 
convexa, capite et pronoto fortiter sat crebre punctatis, oculis 
prominentissimis, grosse granulatis, pronoto quam longitudinem 
fere duplo latiori, lateribus leviter arcuatis, angulis anticis fere 
rectis, posticis obtusis; scutello late transverso; elytris seriato- 
punctatis, interstitiis subtilissime punctulatis, prosterno fortiter 
haud crebre punctato, metasterno ubique, lateribus fortius, ‘punc- 
tato; abdomine subtus sat fortiter et dense punctato; antennis 
modice elongatis. 
Long. 6-5-8 mm.; lat. max. 2-5-3 mm. 
Upper Mexone R.: Ban Nam Mo, Sala Pang Yok, 
Pou Bia, Pak Lay (Jan.—June), Luang Prabang, Vientiane. 
Burma: Bhamo (L. Fea, June). 
The red markings are practically the same as in M. major, 
except that the posterior band is not arched behind, but 
slightly toothed. M. affinis has a deceptive resemblance to 
M. vitalisi, and occurs in almost equal abundance in the 
same localities. It is of the same size and similarly punc- 
tured above, and the elytral pattern is the same, except 
that the anterior red band touches the base of the elytron 
at two points, with a small black dot between. It is less 
slender in shape, the prothorax more transverse, its sides 
more rounded, the front angles not acute and the hind 
angles rounded. The elytra are less attenuated behind. 
The antennae are less slender, not extending beyond the 
base of the pronotum, and the joints of the club are broader. 
