80 Orper—COLEOPTERA. Sectron—PENTAMERA. 
Typus, Ceratoderus bifasciatus Kollar ; Westw. Arcana Ent. pl. LVIII, fig. 1. 
Habitat ; India Orientalis. 
Sus-Genus 2—MERISMODERUS. Westw. 
(Trans. Ent. Soe. Lond. iy. Proc. p. 130.) 
Corpus supra opacum, plaga media elytrorum polita; antenne clava depressa quasi 5-articulata ; palpi 
maxillares articulo secundo fere rotundato depresso ; labiales 3-articulati articulo tertio majori subovali apice sub- 
truncato ; prothorax bipartitus, lateribus angulatis; tibiarum apicibus externe obtuse truncatis, haud calearatis ; 
tarsi articulo basali sequenti majori. 
This sub-genus was proposed, in the Proceedings of the Entomological Society on the 4th of August, 1845, 
for a species captured in India by Mr. Benson, which agreed in general characters with Ceratoderus bifasciatus of 
Kollar, but differing from it in characters which do not seem to have more than subgeneric importance. For 
these two insects the generic name of Melanopsilus was proposed by me, the name of Ceratoderus being retained 
as that of the sub-genus of C. d/fasciatus, and a new subgeneric name, “ Merismoderus,” proposed for IM. Bensoni. 
Srecres 1 (17)—MERISMODERUS BENSONI. 
(Westw. Trans. Ent. Soc. Lond. vol. iv. Proc. p. 130, and vol. y. p. 23, pl. II, fig. 2; Cab. Orient. Ent. pl. XLI, fig. 4.) 
Prate XVIII, Fie. 1. 
Luteo-fulvus, opacus : capite punctulato, supra impressionibus duabus rotundatis inter oculos alteraque versus 
medium marginis antici; prothoracis parte antica angulis productis, subacutis, parte postica quasi 4-lobata ; 
elytris coriaceis, singulo versus medium plaga magna nigra subtriangulari ad suturam haud extensa; disco niti- 
dissimo, maculaque parva communi nigra ad apicem suture, lateribus setulosis. 
Long. corp. lin. 3. 
Habitat; India Orientalis (D. Benson). In Mus. Hopeiano Oxonie, D. Benson, olim in Mus. Westwoodii. 
Captured by the late Mr. Benson under a brick near the river Ganges, about fifty miles below Cawnpore, in 
the cold season. He also took another specimen, under a stone in a black ants’ nest, between the Sivalik range 
and Saharunpore. 
Grnus—LEBIODERUS. West. 
(Trans. Ent. Soe. ii. p. 93.) 
Species 1 (18)—LEBIODERUS PERCHERONII. 
Pirate XVII, Fie. 3. 
Testaceus, laevis, tenuissime punctatus: capitis angulis posticis parum prominulo-acutis, vertice canaliculato ; 
antennarum clava maxima ut videtur tantum biarticulato, impressione profunda, transversa prope basin, reliqua 
parte inflata (fig. 3); marginibus spinosis, parte basali extus in spinam producta ; prothorace brevi, parte antica 
capite multo latiori, lateribus angulatis, carinaque transversa instructa, parte postica multo angustiori, bitubercu- 
lata; elytris latis oblongis angulis anticis lateralibus antrorsum porrectis ; pedibus longis gracilibus. 
Long. corp. lin. 3. 
Habitat; Tinga. In Mus. W. W. Saunders. 
The structure of the antenne (the club of which is not so apparently 5-jointed as in LZ, Gori, Westw. Are. 
Ent. pl. LVIII, fig. 3, a single transverse deep impression only existing), and the different form of the thorax, 
lead me to regard this insect as specifically distinct from the type of the genus of which I have now seen a con- 
siderable number of specimens, one of which (now in the Hopeian Collection) was kindly presented to me by 
the late Herr Westermann, of Copenhagen. 
