434 HETEROMERA. 
interstices; the head and eyes are formed as in H. badius, but the antenne in the male 
are longer. The cedeagus also differs in structure from that of either of the first- 
mentioned species. From ZH. hispidulus the shorter pubescence, the more finely and 
more densely punctured and relatively broader thorax, and the differently shaped 
cedeagus sufficiently distinguish it. The lateral lobes of the last ventral segment are 
formed very much as in ZH. tibialis. 
20. Hymenorus igualensis. 
Closely resembling H. rufescens, and differing as follows :—Broader and more ovate, opaque, reddish-brown ; the 
eyes very large and narrowly separated; the prothorax more densely punctured ; the elytral interstices 
broader and flatter and more distinctly punctured; the legs stouter; the rest as in 1. rufescens. 
Length 52 millim.; breadth 21 millim. ( 9.) 
Hab. Mexico, Iguala in Guerrero (/ége). 
A single example, undoubtedly distinct from A. rufescens. 
21. Hymenorus longicollis. (Tab. XX. fig. 3, ¢ .) 
Elongate, narrow, reddish-brown, dull, thickly clothed with fulvous pubescence. Head closely and not very 
finely punctured; eyes (¢) large but rather narrow, narrowly separated; antenne ( 3) short and stout, 
ferruginous; prothorax elongate, only a little broader than long, convex, the sides parallel and almost 
straight from the base to beyond the middle and rounded and but very little narrowed in front, the hind 
angles rectangular, the base rather strongly bisinuate, the surface unimpressed and densely and somewhat 
coarsely punctured; scutellum closely punctured; elytra long, very little wider than the prothorax, 
lightly punctate-striate, the punctures oblong in shape and not very closely placed, the interstices almost 
flat, closely punctured on the basal half and sparsely so beyond ; legs short, ferruginous; the first joint 
of the hind tarsi rather short, about as long as the following joints united. 
Length 53 millim.; breadth 2 millim. (<.) 
Hab. Mexico, Vera Cruz (Hége). 
A single male example. This insect may be readily identified by its elongate, narrow 
shape and comparatively very long thorax. 
22. Hymenorus castaneus. 
Elongate ovate, rather narrow, dull castaneous, the elytra slightly shining, thickly clothed with short pubes- 
cence. Head closely and rather finely punctured; eyes (¢ ) large, rather narrowly separated ; antenne . 
(3) stout, moderately long, ferruginous; prothorax broader than long, convex, the sides parallel behind 
and rounded and narrowing in front, the hind angles rectangular, the base rather strongly bisinuate, the 
surface very densely and somewhat coarsely punctured; scutellum closely punctured ; elytra moderately 
long, a little wider than the prothorax at the base, subparallel in their basal half, finely and shallowly 
punctate-striate, the punctures oblong in shape and approximate, the interstices almost flat and closely 
punctured ; legs ferruginous, short, and rather stout, the four hinder tibise straight ; beneath closely and 
coarsely, the ventral surface more sparsely, punctured. 
Length 54 millim.; breadth 2} millim. (<¢.) 
Hab. Mexico, Ventanas in Durango (Hage). 
A single male example. In its general shape this species is intermediate between 
H. igualensis and H. longicollis, though perfectly distinct from either. 
