104 MALACODERMATA. 
The specimens which have one joint at the apex of the antenne pale are, I think, the 
males. This species is at once distinguished among all I have yet seen of the genus from 
Central America by its rather stout antenne, which are very finely serrate ; and by the 
elytra without yellow apices, not much longer than the head and thorax, and by its 
comparatively small size. 
5. Malthinus brevipennis. 
Testaceus ; antennis (articulo primo pratermisso), occipite, prothoracis macula discoidali, elytris (limbo toto 
apiceque exceptis) nigro-fuscis ; antennis corpore paulo longioribus ; elytris vage punctatis, vix striatis, 
corporis dimidio brevioribus, apice sulphureis. Long. 4 millim. 
Hab. Guatemaa, near the city (Salvin), Duefias (Champion). 
Leconte has compared his M. occipitalis with the European IZ. fasciatus, with which he 
thinks it may possibly be identical. The present insect differs from fasciatus as follows :— 
The black portion of the head is more extended between the eyes; the crown is nearly 
smooth; the thorax is not narrowed in front, but is subquadrate, a little rounded in 
front; its black marking is widest in front, often divided behind, sometimes consisting 
of only four spots—two more distant in front, two nearly approaching behind connected 
by an indistinct line. The elytra are much shorter than in J. fasciatus, not evenly 
striate, nor punctured in rows. 
Seven specimens were sent by Champion from Duefas. 
6. Malthinus cruenticeps. 
Niger ; capite sanguineo, antice flavo, crebre punctato; pedibus flavis, tibiis tarsisque fuscescentibus ; elytris 
corpore paululum brevioribus, regulariter punctato-striatis, apicibus levibus. Long. 5 millim. 
Hab. Guatemata, Cubilguitz (Champion). 
Head rich ferruginous red, paler in front; antenne nearly as long as the body, filiform, 
black, excepting the basal part of the first joint, their second joint equal in length to 
the third ; maxillary palpi yellow, with fuscous apical joint, the latter oval, acuminate. 
Thorax firm in consistence, uneven, narrowed in front, margined, with irregular scat- 
tered ruge and punctures, a fossa in front and behind on the centre of the disk, and 
acute but nearly right angles both in front and behind. LElytra evenly and deeply 
punctate-striate, the punctures more confused laterally and towards the apex, which is 
smooth and slightly convex. The prosternum, meso- and metathoracic epipleuree are 
yellow, the sides of the abdomen reddish. The legs are pale yellow, excepting the tibie 
and tarsi, which are pale fuscous, the apices of the former even being pale. 
This very curious and interesting little species appears in some respects to resemble 
Leconte’s genus Tytthonyx. The description given above will show that it is not con- 
generic with the single species in that genus; indeed it seems only to differ from typical 
Malthini by the hard, firm appearance of the thorax and the peculiar coloration. A 
single specimen only has come under my notice. 
