130 HETEROMERA. 
Hab. Guatemata, Cerro Zunil 4000 feet (Champion). 
One male example. Much smaller than V. eneipennis; the eyes almost entire; the 
elytra less elongate; the antenne longer and more slender ; the tarsi more slender; the 
sixth ventral segment and last joint of the maxillary palpi differently shaped. 
SISENES. 
Mandibles bifid ; last joint of the maxillary palpi long and narrow, narrowly ovate or widening a little out- 
wardly, with the apex very oblique and truncate or somewhat rounded, that of the labial palpi subtri- 
angular, with the apex more or less truncate or rounded; eyes finely granulated, more or less prominent— 
larger, more transverse, more convex, and more deeply emarginate in S. cyanipennis and S. boops, more 
oblong, moderate or small, and feebly emarginate in the other species; head as broad as or broader than, 
and not deeply sunk into, the prothorax, a little prolonged in front, the mandibles long and exposed and 
the labrum large; antenne 11-jointed in both sexes, tapering a little outwardly, filiform, or with joints 
3-5 thickened in the female or in both sexes, the eleventh joint often a little constricted beyond the 
middle; prothorax about as long as broad with the sides moderately constricted behind, or subquadrate 
with the sides almost straight behind, at least as broad at the base as at the apex, the disc usually with 
one or two transverse grooves or depressions on each side; elytra long or moderately long, subparallel—in 
some few species flatter and in one or both sexes widening to beyond the middle,—with series of double 
lines or fine cost; legs moderately long, stout in a few species (S. cyanipennis &c.), slender in others ; 
femora similar in both sexes; tibiee each with two long spurs; tarsi in some species with joints 1-4 or 2-4 
of the front and middle pairs and 2 and 3 or 3 of the hind pair, or in others with the penultimate joint only, 
furnished with a brush of short hairs beneath; claws very feebly dilated at the base within. Male with 
the fifth ventral segment in some species deeply, in others feebly, emarginate in the middle; sixth ventral 
segment with long or short lateral lobes, these often projecting beyond the fifth segment. 
Numerous species from Central America are referred to this genus, and it will 
in all probability prove to be equally well represented in South America. The 
narrower and differently shaped apical joint of the maxillary palpi and _ other 
particulars distinguish it from Diplectrus, Vasaces, Copidita, Asclera, &c.; the 
eleven-jointed antenne in the male and the two-spurred anterior tibize separate it 
from Nacerdes and Xanthochroa; and the finely granulated and rather prominent 
eyes, bifid mandibles, narrow apical joint of the maxillary palpi, and more quadrate 
thorax distinguish it from Oxacis. 
Several groups of species are indicated, these differing from one another in the form 
of the antenne, extent of emargination and form of the eye, and in the clothing of the 
soles of the tarsi; but as they are connected by various gradations it is not advisable to 
separate them. The different species vary in size, but are mostly small; the majority 
have much the facies of various genera of Telephoride, and in these species the antenne 
taper very slightly or are more or less filiform, while a few resemble Lycide, these 
latter having joints 8-5 of the antenne thickened or dilated. One, S. lineatocollis, has 
these joints thickened in the female only. In S. cyanipennis the tarsi are formed and 
clothed somewhat as in Diplectrus (from which the narrower last joint of the maxillary 
palpi and different male-characters distinguish it); S. boops and S. varians are inter- 
