246 RHYNCHOPHORA. 
8. Megalostylus dilaticollis, sp.n. (Tab. X. fig. 33, ¢.) 
3. Oblong, black, densely clothed above and beneath with whitish scales, the head, under surface, and 
legs also more or less pilose, the antennal club blackish. Rostrum widened towards the base, broadly 
excavate anteriorly ; eyes rounded, very prominent; antennal scape reaching the front of the prothorax, 
stout, rapidly widening ontwards, joints 1-3 of the funiculus subequal in length, the other joints 
shorter. Prothorax abruptly, quadrangularly explanate on each side from about the middle to the base, 
and here much wider than the elytra and nearly twice as broad as long, the base moderately bisinuate. 
Scutellum transverse. Elytra moderately long, gradually narrowing from the base, very finely 
punctate-striate, the seriate punctures on the disc scarcely coarser than those of the flattened interstices. 
First ventral segment hollowed down the middle, the fifth slightly tumid along the median line 
posteriorly. 
Length 8, breadth of prothorax 3, of elytra 24 millim. 
Hab. Mexico, Rio Balsas, near Cuernavaca (LI. F. Wickham). 
One specimen only of this remarkable species has been sent us by Mr. Wickham. 
It was found in the summer of 1909. The broadly quadrangularly explanate 
prothorax separates it at once from all the allied forms. It is possible that the 
female may differ in this respect. 
9. Megalostylus macrophthalmus, sp.n. (Tab. X. fig. 34, @ .) 
9. Comparatively short, black, the legs obscure ferruginous; above clothed with bluish-grey, and beneath 
with whitish, scales, and also set with pallid bristly hairs, those on the elytra long, erect, and 
uniseriately arranged down each interstice. Rostrum transverse, broadly hollowed anteriorly ; antennal 
scape barely reaching the posterior margin of the eyes, the latter oval and not very prominent. 
Prothorax transverse, conical, feebly bisinuate at the base, the hind angles acute. Scutellum transverse 
small, Elytra subparallel in their basal half, wider than the prothorax at the base, rather short, finely 
punctate-striate, the interstices flat. 
Length 43, breadth 2 millim. 
Hab. Mexico, Jalapa (H6ge). 
One specimen, somewhat abraded. Differs from the females of all the other 
members of the genus in the oblong, somewhat depressed eyes; the elytra are 
comparatively short and setose; and the legs are ferruginous, as in MV. rhodopus. 
MEGALOSTYLODES, gen. nov. 
Femora clavate, the intermediate and posterior pairs deeply excavate near the apex beneath, so as to appear 
subangularly dilated; anterior tibia unarmed at the outer apical angle; head comparatively small ; 
rostrum subquadrangular ; eyes convex, prominent, lateral; prothorax much narrower than the elytra 
in both sexes; body hirsute and sparsely squamose above; the other characters as in Megalostylus. 
Type, M. hirsutus. 
‘The single species referred to this genus must be separated from Megalostylus 
e e : 
owing to its less developed head and prothorax, the subdentate, stout posterior femora 
(especially noticeable in the male), the unarmed outer apical angle of the anterior 
tibia, and the hirsute, sparsely squamose upper surface of the body. It appears to be 
not uncommon in the Mexican State of Oaxaca. 
