432 HETEROMERA. 
Closely allied to H. hispidulus; but differing from it in the less coarsely punctured 
vertex, the much broader thorax (the sides of which are very strongly rounded), and 
the more coarsely punctate-striate elytra, the latter not broader than the thorax at 
the base. 
Though a single mutilated example only has been received, there can be no doubt 
that it represents a distinct species. H. hispidulus is from the Atlantic, H. forreri 
from the Pacific, slope. 
16. Hymenorus foveiventris. (Tab. XX. figg. 2, 2a.) 
Oblong ovate, reddish-brown, slightly shining, densely clothed with short pubescence. Head rather closely 
punctured, the vertex coarsely, the epistoma more finely so; eyes large and narrowly separated in the 
male, smaller and much more distant in the female; antennz moderately long, rather stout, ferruginous ; 
prothorax transverse, rather convex, the sides rounded and narrowing from a little before the base and 
straight behind, the hind angles subrectangular, the base rather strongly bisinuate, the basal fovez 
indistinctly indicated, the surface coarsely and densely punctured; scutellum closely punctured; elytra 
moderately long, a little wider than the prothorax at the base, coarsely punctate-striate, the interstices 
slightly convex and sparsely punctured; legs ferruginous, the four hinder tibie almost straight, the basal 
joint of the hind tarsi longer than the following three joints united. 
¢. Posterior tibie straight, slightly dilated on the inner side behind the middle. Fifth ventral segment with 
a deep longitudinal fovea in the middle extending from the apical margin nearly to the base. The lateral 
lobes of the last ventral segment narrowly separated, long and very slender, and abruptly curved down- 
wards: the central sheath (when viewed laterally) slightly widened at the extreme apex. (Figg. 2, 2 a.) 
Length 43-53 millim.; breadth 2 millim. (¢ @.-) 
Hab. Guatemata, San Gerénimo (Champion). 
Five examples, two of which are males. In general facies this insect resembles 
H. sordidus, but it differs from that species in its very much smaller size, shorter elytra, 
sparsely punctured interstices, smaller and less acutely triangular apical joint of the 
maxillary palpi, and male characters; in the sculpture of the elytra it approaches 
H. guatemalensis. The basal joint of the hind tarsi is very long. 
A single female example from the same locality differs from the others in being 
larger, and in having the thorax relatively larger and broader and more rounded at the 
sides, and the elytral interstices more coarsely punctured ; it is probably a variety of the 
same species. 
17. Hymenorus similis. (Tab. XX. figg. 5, 5a.) 
Closely resembling H. fovecventris, and differing as follows:—Smaller and shorter; the eyes more approximate 
in both sexes; the prothorax more densely punctured and in consequence duller; the elytra relatively 
shorter; the fifth ventral segment unimpressed in the male; the legs more slender; the intermediate and 
posterior tibiee slightly sinuate within. 
3. Posterior tibie slightly curved. The lateral lobes of the last ventral segment shaped much as in H. fover- 
ventris, but more gradually curved downwards; the central sheath with its apical portion rather broad 
somewhat spatulate in shape, and not widened at the extreme apex, the latter rounded. (Figg. 5, 5a.) 
Length 4-44 millim.; breadth 14-12 millim. (¢ 92.) seve 
Hab. Mexico, Ventanas in Durango, Cuernavaca (Hoge). 
