HYMENORUS. 439 
sexes ; antenne short and stout, the joints very distinctly widened towards their apex, ferruginous, the 
intermediate joints sometimes a little darker ; prothorax transverse, moderately convex, the sides con- 
verging from a little before the base and rounded and narrowing in front, the hind angles rectangular, 
the base feebly bisinuate, the basal fovez scarcely indicated, the surface very densely and rugosely punc- 
tured; scutellum closely punctured ; elytra very little wider than the prothorax at the base, rather short, 
finely punctate-striate, the interstices flat and closely punctured ; beneath shining, reddish, the venter 
more or less piceous, rather closely and coarsely punctured, the fourth and fifth ventral segments much 
smoother ; legs short, ferruginous, the first joint of the hind tarsi scarcely so long as the following joints 
united. 
Length 42-53 millim.; breadth 2-24 millim. (¢ 2.) 
Hab. Mexico, Northern Sonora (Morrison). 
Numerous examples. Duller than H. densus; the head more closely punctured ; 
the eyes smaller and more widely separated in both sexes; the antenne entirely ferru- 
ginous; the thorax rather more rounded at the sides, much more densely punctured, 
and with the hind angles not so sharp. 
34. Hymenorus guatemalensis. (Tab. XX. fig. 9.) 
® 
Oblong ovate, rather convex, varying in colour from light reddish-brown to brownish-piceous, shining, thickly 
clothed with short pubescence. Head closely and rather coarsely punctured; eyes small, widely separated 
in both sexes ; antenne slender, moderately long, the third joint a little longer than the fourth, ferrugi- 
nous ; prothorax short, transverse, rather convex, the sides moderately rounded and converging from the 
base, the hind angles rectangular, the base rather strongly bisinuate, the basal fovez indistinctly indicated, 
the disc shallowly transversely impressed behind, the surface densely and somewhat coarsely punctured ; 
scutellum closely punctured; elytra wider than the prothorax at the base, rather long, coarsely punctate- 
striate, the interstices feebly convex and sparsely and comparatively coarsely punctured ; legs rather long 
and slender, ferruginous. 
Length 64-62 millim.; breadth 2}-23 millim. (¢ 9.) 
Hab. GvuatTEMALA, Cerro Zunil, Duefias, Capetillo (Champion). 
Many specimens. This species, on account of the shining surface, coarsely-sculptured 
elytra, slender antenne, and the shape of the thorax (the sides rapidly converging from 
the base), has a different facies from most of the allied forms. 
35. Hymenorus pallidus. 
Oblong ovate, dull reddish-testaceous, the elytra slightly shining, thickly clothed with short pubescence. Head 
closely and coarsely punctured, the vertex more coarsely so; eyes small and widely separated in both 
sexes; antenne stout, the joints rather long, and very little widened towards their apex, the third joint a 
little longer than the fourth, testaceous ; prothorax short, transverse, not very convex, the sides mode- 
rately rounded and gradually narrowing from the base, the hind angles sharply rectangular, the base 
rather strongly bisinuate, the dise broadly and shallowly transversely impressed behind, the basal fovez 
indistinct, the surface very densely and rugulosely punctured ; scutellum closely punctured ; elytra wider 
than the prothorax at the base, moderately long, coarsely punctate-striate, the interstices slightly convex 
and closely and rather finely punctured ; legs testaceous. 
Length 53-6 millim.; breadth 23-25 millim. (dQ .) 
Hab. Mexico, Ventanas in Durango, Acapulco and Chilpancingo in Guerrero (Hdge). 
Numerous examples. This insect is allied to H. guatemalensis ; but differs from it in 
