various Central American Coleoptera. 169 
*Othnius planatus, un. sp. 
Elongate, very depressed, moderately shining, nigro-piceous with a 
faint aeneous lustre, the labrum, palpi, and antennae ferruginous, the 
femora and tibiae reddish-brown, the tarsi rufo-testaceous; thickly 
clothed with fuscous hairs. Head and thorax very densely and finely, 
the elytra more coarsely and less closely, punctate; antennae barely 
reaching the base of the thorax, joints 9 and 11 moderately widened, 
9 and 10 transversely subquadrate; head with the eyes as wide as 
tue thorax, the eyes large; thorax transversely subquadrate, slightly 
narrowed posteriorly, longitudinally depressed on each side of the 
disc, the sides unarmed, the hind angles rectangular; elytra wider 
than the thorax, subparallel in their basal half. 
Length 4, breadth 1; mm. (? 9.) 
Hab. Mexico (Truqui, in Mus Brit., ex coll. Fry). 
One specimen. Smaller and still more depressed than 
O. immaculatus, the head and thorax very densely, finely 
punctate, the upper surface almost uniformly nigro-piceous, 
the elytra being very little paler than the thorax. 0. 
lugubris, Horn, from Oregon, seems to be an allied form, 
with a more coarsely punctured thorax, the sides of which 
are armed with two indistinct teeth. 
