564 On a new Genus of Heteromerous Coleoptera. 
dividing them not very well marked, the third segment only 
a little shorter; the fourth about two thirds the length of the 
third, more convex in the longitudinal direction, with the 
sutures dividing it from the others more strongly marked *. 
This genus is closely allied to Apocrypha, but differs in 
having the femora less club-shaped, with the posterior pair 
emarginate at the apex below; the proportions of the joints 
of the tarsi are also different. 
The insect somewhat resembles some species of the Cara- 
bideous genus Bradycellus. 
Plastica polita, sp. n. 
Elongato-oblonga, piceo-nigra, nitidissima; capite crebre fortiter 
punctato; thorace minus crebre sat fortiter punctato; elytris 
irregulariter punctatis, sutura prope scutellum impressa ; pedibus 
rufo-piceis. 
Long. 5 mill. 
Hab. Sorata Mountain (Sir Wm. Martin Conway). 
Head rather large, subquadrate, the punctures rather large 
and close together, leaving a smooth spot on the vertex. 
Cheeks behind the eyes swollen almost to the level of the 
eye, parallel, with the angles much rounded. Antenne 
reaching to about the middle of the thorax, rather stout, 
slightly thickening towards the apex; the third joint a little 
longer than the second; the following joints short, gradually 
becoming transverse, the eleventh joint nearly twice as long 
as broad, conico-ovate. Thorax only a little broader than the 
head, one-sixth broader than long, evenly convex, scarcely 
narrowed in front, but considerably narrowed at the extreme 
base, the sides gently rounded and with the angles rounded. 
The surface is very distinctly punctured, but not so strongly 
as the head, and the punctures are separated from each other 
by the diameter of a puncture. Hlytra at the shoulders 
scarcely wider than the thorax, slightly wider posteriorly, 
arcuately narrowed at the apex, more finely punctured than 
the thorax, the punctuation not very sharply defined, irre- 
gular, moderately close, with some very lightly impressed 
punctured lines, especially near suture and sides. The 
shoulders are very much rounded; the apex is tinged with 
pitchy red. Legs not very long; the tarsi about as long as 
the tibiee. 
* While examining the mouth-parts of this genus I looked at those 
of Hymeus, Pasc., which is placed next to Apocrypha; finding them 
unlike those cf a Heteromerous insect, I examined the tarsi, and found 
the joints to be 5, 5, 5 in the first specimen ; but the second is a male, 
and has them 5, 5, 4, showing that the genus should be placed in the 
Cucujidee, perhaps near Psammechus. 
