MEGALOSTYLUS. 245 
scales intermixed, these latter rarely condensed into three vitte on the prothorax and several faint 
stripes on the elytra (fig. 31). 
Megalostylus physops, Jekel, in litt.’. 
¢g. Antennal scape much thickened outwards, reaching bevond the eyes; first ventral segment hollowed 
- down the middle, the fifth tumid along the median line towards the apex. 
@. Antennal scape shorter and more slender ; fifth ventral segment almost flat. 
Length 3;,-9, breadth 14-33 millim. (¢ 2.) 
Hab. Mexico!? (Truqui, in Mus. Brit.), Durango, Tepehuanes, Rio Balsas (Wickham), 
Puebla, Parada (Sallé), Cholula (Ferrari-Perez), Matamoros Izucar (Sallé, Hoge, 
U.S. Nat. Mus.), Cuernavaca (Sallé, Hoge), Yautepec, Irapuato (Hoge), Chilpancingo, 
Amula and Omilteme in Guerrero (H. H. Smith). 
The type-form of J. splendidus is densely clothed with metallic golden- or bluish- 
green scales, the much more abundant variety being cinereous or cinereous faintly 
striped with brown. Our examples of the former are mainly from Guerrero, and the 
others from Durango, Puebla, Guanajuato, and Morelos. ‘This species is comparatively 
much smaller and less elongate than the equally variable J. albicans, the prothorax 
is usually more sinuate at the base, the elytra in the female (and often in the male 
also) are considerably wider than the dilated basal portion of the prothorax, and the 
fifth ventral segment wants the longitudinal plicain that sex. In one or two examples 
the elytra have a series of minute hairs along each interstice. Both metallic and 
cinereous forms have been received from Cuernavaca and Cholula. One of the green 
examples from Chilpancingo ( 2 ) measures 3745 mm. onlyinlength. Four rather large 
females, without definite Mexican locality, have the hind angles of the prothorax 
extending outwards and the base feebly bisinuate, and the vestiture cinereous mottled 
with brown; they may belong to a different species. 
7. Megalostylus fusiformis, sp.n. (Tab. X. fig. 32, 3.) 
3. Oblong, fusiform, black, densely clothed with subopaque green or golden-green scales, and also set with 
short, fine, semierect, pallid hairs. Rostrum slightly widened towards the base, broadly excavate 
anteriorly, the median groove long; antennal scape much thickened outwards, reaching beyond the 
eyes, the latter rounded and very prominent. Prothorax broad, transverse, conical, the sides slightly 
rounded anteriorly, the hind angles acutely extending outwards, the base rather strongly bisinuate. 
Scutellum very small. Elytra with the sides at the base forming an almost continuous outline with 
those of the prothorax, gradually narrowing from the humeri, finely punctate-striate, the interstices flat. 
First ventral segment hollowed down the middle, the fifth somewhat tumid along the median line. 
Length 71-74, breadth 23-23 millim. 
Hab. Mexico, Rio Balsas, near Cuernavaca (Wickham). 
Two males, found in 1909. This insect approaches the green forms of JZ. albicans 
and M. splendidus, but differs from them in the fusiform outline of the body, and the 
largely developed prothorax, with rather strongly bisinuate base and the sides slightly 
rounded anteriorly. The general shape is very suggestive of that of certain Hpitragi 
(fam. Tenebrionide) of the same region. 
