278 HETEROMERA. 
most of the species comparatively smooth. The anterior tarsi have the three basal joints 
equal in width, often very short, and usually dilated in the male, the third joint more 
or less deeply excised or bilobed, the fourth joint quite small and short and deeply sunk 
into the third. The hind tibie in a few of the apterous species, WV. versicolor &c., are 
a little sinuous, or swollen in the middle of the inner side in the male. The intercoxal 
process is more or less triangular, though very broad and almost rounded in W. eno- 
plopoides. The scutellum is large in the winged species, smaller in the apterous forms ; 
in one or two of these latter (e. g. WV. nitidissimus and N. nodulosus) very small. The 
males of most of the winged species have the ventral segments 1-3, or 1 and 2, a little 
flattened in the middle, and this part closely and finely punctured, and usually pubescent. 
In the apterous species the ventral surface of the male is sculptured as in the female. 
Nautes will doubtless prove eventually to be well represented in Tropical South 
America. 
a. Species winged ; the ventral segments 1-38 more or less flattened and closely 
punctured, and usually pubescent, along the middle in the male. 
1. Nautes fervidus. (Tab. XII. fig. 7, 2.) 
Nautes fervidus, Pascoe, Journ. Ent. ii, p. 476"; Allard, Rév. Hélopides, L’Abeille, xiv. p. 6°; 
Mittheil. der schweiz. ent. Ges. v. pp. 58 & 245°. 
Nautes eneus, F. Bates, Ent. Monthly Mag. vi. p. 270*; Allard, Rév. Hélopides, L’Abeille, xiv. 
p- 7°; Mittheil. der schweiz. ent. Ges. v. pp. 58 & 246°. 
Hab. Mexico? (coll. F. Bates), Cordova (Sallé*), Jalapa (Hége); GuatemaLa, El 
Tumbador, Las Mercedes, Senahu, Sinanja, Panzos, Teleman, San Juan in Vera Paz 
(Champion) ; Nicaracua® (coll. F. Bates ®), Chontales (Belt, Janson *). 
A common species in Central America, though apparently not extending south of 
Nicaragua. V. wneus, F. Bates, as already suggested by Allard (op. cit.), is merely a 
variety of this rather variable insect—the difference of colour and size, the absence of 
oblique impressions between the eyes, &c., proving to be of no value when a long series 
is examined. WV. fervidus varies in size from 6-10 millim.; the male has the ventral 
segments 1-3 more closely punctured, and very slightly pubescent, in the middle. 
An example from Jalapa is figured. 
2. Nautes glabratus. 
Broad ovate, convex, light brownish-sneous, the elytra tinted with green and cupreous, shining. Head short, 
rather finely and somewhat sparingly punctured, the intraocular space and vertex much smoother, the 
epistoma scarcely defined posteriorly (the usual groove almost or quite obsolete); antenne moderately 
long, ferruginous ; prothorax broad, strongly transverse, very strongly margined at the sides and obsoletely 
so at the base, the lateral margins thickened and reflexed and very narrowly grooved within, the sides a 
little rounded and converging from the base, the apex deeply emarginate, the anterior angles very 
broad and narrowly rounded, the base very strongly bisinuate, and with the broadly rounded central 
portion produced a little beyond the obtuse but prominent hind angles, the basal fovess almost or quite 
obsolete, a deep oblique impression on each side (extending almost to the hind angles) a little before the base, 
