376 HETEROMERA. 
specimen I have seen of JV. bicolor, a male, has the elytra more rugosely punctured than 
in WV. piezata. 
5. Nemognatha brevicollis. (Tab. XVII. fig. 11.) 
Elongate, parallel, depressed ; above and beneath, the legs, palpi, and antennz black, the prothorax and the 
extreme base of the elytra (including the humeri), and in one specimen a transverse patch between the 
eyes, flavo- or reddish-testaceous ; clothed with very fine pubescence, that on the prothorax semierect and 
partaking of the ground-colour. Head triangular, not much prolonged in front, thickly and not very finely 
punctured; the mandibles and palpi comparatively short ; the outer lobe of the maxille a little shorter 
than the antenn, not half the length of the body; the antenne comparatively short, rather stout, 
filiform, the second joint extremely short, not nearly half the length of the third; prothorax a little wider 
than the head, nearly twice as broad as long, narrowed behind, the hind angles almost rounded, the surface 
finely and somewhat thickly punctured; elytra long and parallel, densely rugulose, with traces of three 
faint raised lines extending from the base to about one-fourth from the apex; beneath shining, sparsely 
punctured ; the spurs of the hind tibize slender, subequal. 
Length 84-104 millim. (9.) 
Hab. Mexico, Matamoros Izucar (Sallé, Hoge). 
Two examples. Closely allied to the North-American WV. nemorensis, Hentz; but 
differing from it by the pale thoracic pubescence, the thorax itself wider and still more 
transverse; the elytra black, with the extreme base coloured like the thorax, densely 
rugulose (not densely and minutely punctured). The second joint of the antenna is 
extremely short. The elytra in certain lights have a violaceous lustre. The specimens 
I have seen of V. nemorensis have the head broader than the thorax. 
6. Nemognatha foveifrons. (Tab. XVII. fig. 12.) 
Moderately elongate, rather broad, somewhat depressed, flavo-luteous, the eyes, the antenne, and the tips of 
the mandibles and palpi black; very finely pubescent, the pubescence very short and partaking of the 
ground-colour, the head and prothorax shining, the elytra opaque; the legs testaceous, with the knees and 
the tarsi piceous. Head short, triangular, deeply transversely depressed between the eyes, thickly and 
finely punctured, the mandibles comparatively short, the labrum transverse, the palpi moderately long ; 
the outer lobe of the maxille nearly half the length of the body; antenn elongate, filiform, the second 
joint about half the length of the third; prothorax wider than the head, strongly transverse, a little 
constricted at the sides behind, and dilated at the base, the anterior angles broadly rounded, the hind 
angles prominent, the surface sparsely and finely punctured, the disc shallowly transversely depressed 
‘before the apex, an oblique depression on either side externally at the base; scutellum sparsely punc- 
tured; elytra moderately long, parallel, flattened on the disc, minutely but not very densely granulate, 
each elytron with four, faint, slightly impressed lines extending from the base nearly to the apex; beneath 
testaceous, sparsely and finely punctured; the spurs of the hind tibie slender, equal. 
Length 93 millim. (2.) 
Hab. Mexico, Atoyac in Vera Cruz (H. H. Smith). 
One example. ‘This species does not appear to be very closely allied to any of those 
described by Leconte. ‘The thorax is strongly transverse, depressed before the apex 
and at the base on either side externally, the punctuation moderately fine and scattered. 
The sculpture of the elytra consists of not very closely placed, minute, feebly raised, 
