166  Buacksurn and SHarrp—On some New Species and Genera of Coleoptera. 
the sides, and is very closely applied to the elytra, the lateral margin is very fine, 
and the basal one obliterated. The elytra are even more convex than the thorax, 
and acuminate behind. 
The species apparently varies in size, and in the depth of colour, and is, I believe, one of the com- 
moner beetles of the archipelago. 
D.S5. 
Cis vagepunctatus, n. sp.—Ovalis; valde convexus; nitidus; parcius fortiter 
punctatus; nigricans, pedibus et antennarum basi rufis; antennis brevibus, clava 
crassiuscula, Long. 14 m.m. 
This insect differs from C. ephistemoides, Sh., to which it is closely allied, in 
having shorter antennz, which are more strongly clubbed; and in being strongly, 
though not at all closely, punctured throughout. 
A single specimen was taken out of damp, rotten wood, on one of the mountains near Honolulu. 
ABS IBY. 
Fam. TENEBRIONIDE. 
PLATYDEMA. 
Platydema obscurum, n. sp.—Oblongo-ovale, parum convexum, opacum, sub- 
tiliter punctatum, nigrum, antennis pedibusque testaceis, elytris testaceo-signatis. 
Long. 24 m.m. 
Antenne short and stout, the third joint longer than any of the others, the 
seventh rather broader than the sixth, which itself is slightly broader than 
the fifth ; seven to eleven subequal in length, each broader than long. Thorax 
very finely and rather closely punctured, dull, the base very distinctly sinuate on 
each side near the scutellum. Elytra with distinct and regular series of fine 
punctures, interstices impunctate, they bear elongate narrow yellow marks, which, 
however, are very variable, so that sometimes the elytra appear black with some 
small yellow marks, sometimes yellow with irregular fascize of black marks. The 
under-surface likewise varies in depth of colour, being sometimes quite black, while 
in other cases the prosternum is piceous ; the femora are sometimes yellow, some- 
times dark. 
This species has allies widely distributed; and in the British Museum there is, without a name, 
a very closely allied species from Celebes. 
D.S. 
