242 RHYNCHOPHORA. 
6°. Legs black. 
c', Scape of antenne slender at base; elytra broader than the 
prothorax, the interstices each with a row of fine hairs : 
scales whitish . . . 2 2 ee ee ee eee Brevipilis, sp. n. 
d', Scape of antennez stouter at base ; elytra with or without 
minute hairs. 
a’, Prothorax not rounded at the sides anteriorly. 
a’. Body more elongate (length 6-13 mm.) ; prothorax at 
base usually as wide as elytra, the hind angles in ? 
sometimes extending beyond the humeri ; fifth ventral 
_ Segment tumid or plicate along the median line in 9. 
.Sealesgreen . . . 2. 3. ae we ee ee albicans, Lac., var. 
7 . Scales cinereous or whitish . . . . . . = . =~ @lbicans, Lac. 
b°. Body less elongate (3,!,-9 mm.) ; prothorax at base not 
so wide as elytra, at least in 9, the hind angles not 
extending beyond humeri in this sex; fifth ventral 
segment not plicate in ?. 
. Scalesgreen . 2. . 1. we. ee eee ee) «Splendidus, Chevr. 
. Scales cinereous . . Loe ee wee ee) 6Splendidus, Chevr., 
6°. Prothorax slightly rounded at t the sides anteriorly, the sides [ var. 
at base forming a continuous outline with those of elytra 
(general shape fusiform) : scales green. . . . . fusiformis, sp. n. 
d*. Prothorax broadly quadrangularly dilated in its basal half ‘scales 
whitish. . . 2... woe ee ew ee we we) Atlaticollis, sp.n. 
b. Eyes not. prominent, oblong ; prothorax conical ; elytra comparatively 
short, set with bristly hairs: scales bluish-grey on the upper 
surface, whitish beneath. . 2. 2. 2. 1. 2 ee ee eee ee) meacrophthalmus, sp. un. 
1. Megalostylus sturmi. (Tab. X. figg. 22, ¢ ; 23, 2, var. villosus.) 
Megalostylus sturmi, Boh. in Schénh. Gen. Cure. vi. 1, p. 115! . 
Var, The scales uniformly cinereous. 
Megalostylus sturmi, Boh., var. y (Pachneus villosus, Sturm), loc. cit.?. 
Megalostylus villosus, Chevr. Bull. Soc. Ent. Fr. 1878, p. liv **. 
Length 54-13, breadth 2-53 millim. (¢ 2.) 
Hab. Mexico!28 (Salle, ex coll. Sturm; Mus. Brit.), Tacambaro and Huetamo 
in Michoacan, Acapulco and Chilpancingo in Guerrero (/ége). 
Tlie green type-form has been sent us in numbers from Michoacan and the cinereous 
variety sparingly from Guerrero. Easily recognizable by the strongly bisinuate base 
and rounded sides of the prothorax, and the rather close, erect, stiff pilosity of the 
* In the characters given by Chevrolat to distinguish M, villosus from A. albicans “les yeux” must be a 
lapsus for ‘* hind angles of the prothorax.” 
