426 HETEROMERA. 
2. Hymenorus brevicornis, (Tab. XIX. fig. 18.) 
Elongate, narrow, subparallel, brownish-piceous, scarcely shining, thickly clothed with short pubescence. 
Head somewhat closely and finely punctured; eyes moderate in size in both sexes, rather narrowly 
separated; antenna short and rather stout, stouter in the female, only reaching to about the first 
fourth of the elytra in either sex, reddish-testaceous; prothorax convex, strongly transverse, the sides 
much rounded anteriorly but straight behind, the hind angles obtuse, the disc feebly impressed in the 
middle before the base, the basal fovece almost obsolete, the surface very densely and finely punctured ; 
scutellum closely punctured ; elytra long, a little wider than the prothorax, subparallel to beyond the 
middle, with rows of fine oblong punctures placed upon very shallow striz, the interstices almost flat and 
very closely, finely, and confusedly punctured; beneath and the legs as in H. ocecdentalis. 
g. Anterior tibie slightly widened on the inner side from a little before the middle. The lateral lobes of the 
last ventral segment long and thin, rather broad, somewhat spoon-shaped, rounded at the apex, and very 
slightly hairy beneath; the central sheath narrowing to the apex, the apex blunt. (Fig. 18.) 
Length 9-94 millim.; breadth 3-37 millim. (¢ 9.) 
Hab. Mexico (coll. F. Bates), near the city, Jalapa (Hoge). 
Three examples only. This species is closely allied to H. occidentalis, but differs in 
its narrower and more parallel shape, less dull surface, more transverse thorax, rather 
longer elytra, and different male characters. 
3. Hymenorus durangoensis. 
Elongate, brownish-piceous, opaque, sparsely pubescent. Head somewhat closely and finely punctured ; eyes 
(©) large, widely separated; antenne (@) long and rather slender, ferruginous ; prothorax transverse, 
feebly convex, a little depressed on the disc behind, the sides almost straight towards the base and some- 
what obliquely converging in front, the hind angles obtuse, the basal fovese almost obsolete, the surface 
very finely, shallowly, and closely punctured, the punctures a little more scattered on the basal half of 
the disc; scutellum closely punctured ; elytra long, a little wider than the prothorax, subparallel in their 
basal half, with rows of fine punctures placed upon obsolete strie, the interstices flat and each with about 
three rows of very fine not very closely placed punctures; beneath closely and finely punctured; legs 
obscure testaceous, rather long and slender. 
Length 93-94 millim.; breadth 3z millim. (.) 
Hab. Mexico, Ciudad in Durango (Hoge). 
Two immature female examples. H. durangoensis is easily distinguished from 
H. occidentalis and H. brevicornis by its opaque surface, long antenne, less convex 
and more sparsely punctured thorax, and by the punctures of the elytral interstices 
being placed in rows. 
4. Hymenorus tarsalis. (Tab. XIX. fig. 19.) 
Elongate, piceous-brown, sometimes lighter in tint, slightly shining, thickly pubescent. Head very closely 
and somewhat coarsely punctured; eyes rather small, equally and somewhat widely separated in both 
sexes; antenne rather slender, moderately long in the male, much shorter in the female, ferruginous, 
joints 3-6 often stained with piceous; prothorax broader than long, moderately convex, the sides 
converging from the base, and a little rounded in front, the hind angles rather obtuse, the disc obsoletely 
canaliculate, and transversely impressed in the middle behind, the basal fover usually distinct, the 
surface densely and finely punctured; scutellum closely punctured; elytra moderately long, slightly 
wider than the prothorax, subparallel in the male, a little wider posteriorly in the female, finely but 
rather deeply punctate-striate, the interstices almost flat, and thickly and confusedly punctured; beneath 
closely punctured; legs moderately long, more or less ferruginous (the tibize sometimes a little darker), 
in the male much stouter than in the female and with the tarsal lobes much more broadly dilated. 
