326 Mr. G. J. Arrow on the 
shining above and decorated with four spots a little larger 
than those of F. subguttatus, Gerst., and not raised above 
the general surface. The anteunz are not very slender, and 
the club is narrower than in any other known species of the 
genus. 
Various features, most of them peculiar to the male 
sex, distinguish this species from all others. The front 
tibie in that sex are straight and furnished beyond the 
middle with a blunt hairy tubercle instead of the usual 
sharp spine. The hind tibia is produced inwards at its 
extremity as a triangular plate, semi-translucent and closely 
fringed at its edges. The terminal ventral segment is 
broadly emarginate and acutely notched, and all the seg- 
ments bear tu(ts of erect hairs along the middle line, forming 
together a longitudinal ventral crest. 
In the female the terminal process of the hind tibia is 
shorter than in the male, and the hairs upon the abdomen 
are distributed over the ventral surface and not massed 
along the middle line as in the male. 
Eumorphus nanus, sp. 0. 
Niger, nitidus, singulo elytro flavo-bimaculato, maculis haud 
minutis, rotundatis, anteriori fere ad humerem attingenti; 
parvus, oblongus, pedibus gracilibus, femoribus clavatis ; pronoto 
transverso, subtiliter parce punctato, lateribus postice paulo 
contractis, angulis anticis prominentibus, posticis acutiusculis ; 
elytris modice convexis, nitidis, sat fortiter et crebre punctatis, 
lateribus anguste marginatis : 
3, tibia antica fere recta, medio fortiter spinosa, abdominis seg- 
mento ultimo levyiter emarginato. 
Long. 5-5°5 mm. ; lat. max. 3 mm. 
Tonkin: Hanoi (Feb.). 
This is by far the smallest known species of the genus. 
It belongs to the quadriguttatus group, but is more shining 
and without any purplish tinge. The elytral spots are, 
relatively to the size, about as large as in H. quadriguttatus 
and larger than in E. calcaratus, but the anterior ones are 
situated farther forward. The pronotum is rather broader 
than in the former species, rather less so than in the latter, 
and the elytra are much more strongly punctured than in 
either. In the rather thickened femora, as in general appear- 
ance, there is an obvious approximation to J/ndalmus, but 
the antennz, which are quite those of Humorphus, will serve 
to distinguish it. 
