EMENADIA. . 805 
extending from the apex to a short distance below the base, and widening anteriorly (in one example 
extending to the base)—more or less black or piceous, these markings abbreviated posteriorly in light- 
coloured examples, but always distinct, the base sometimes rufous; antenns in the male testaceous or 
reddish with the rami fuscous or black, in the female black with the two basal joints reddish-testaceous’; 
beneath varying in colour from black to ferruginous, the metasternal epimera and the hind coxe flavous 
behind; legs varying in colour from black to rufous with the knees and the tips of the tarsi piceous, the 
claws yellow. Head finely and sparsely punctured anteriorly, the vertex almost smooth and very much 
raised, the front moderately convex, the epistoma truncate, the occiput confusedly punctured, slightly 
concave ; prothorax about one-third longer than broad, rapidly narrowing from the base, the sides sinuate 
behind the middle, the hind angles sharp but not prolonged backwards, the surface thickly and somewhat 
coarsely (in some specimens quite finely) punctured, the disc with a broad and rather deep longitudinal 
groove on either side extending from the base to about the middle, the intermediate space strongly convex, 
the basal lobe equilaterally-triangular, obsoletely carinate or slightly raised, and usually (but not always) 
transversely notched at the tip, the tip obtuse; elytra long, sharply pointed at the apex, becoming gradually 
dehiscent from a little below the base, punctured like the prothorax, but with a deep longitudinal channel 
on the disc of each almost impunctate, this channel accompanied externally by a more or less elevated 
ridge or carina; beneath sparsely, the legs thickly, punctured; anterior coxz separated for about half 
their length by a narrow prolongation of the prosternum, contiguous behind ; second joint of the hind tarsi 
broadly flattened, a little shorter than the third joint; anterior tarsi in the male with joints 2-4 thickly 
pubescent beneath. 
Tenath 42-9 millim. (¢ @.) 
Hab. Mexico (coll. F. Bates), Cordova, Capulalpam, Cuernavaca (Sal/é), Chilpancingo, 
Oaxaca, Minatitlan, Jalapa (Hoge). 
Of this species, the commonest of the genus in Mexico, we have received forty-one 
examples: out of this number three only are of the male sex. Though very variable as 
regards the colour of the head, thorax, under surface, and legs, E. excavata is unusually 
constant in the colour and markings of the elytra, these latter only varying in the 
predominance of the yellow or of the black, the markings being always distinct. 
E. excavata is nearest allied to E. bifoveata (Horn), from which it differs, apart from 
the colour and markings of the elytra, by the shallower, longer, and much less abrupt 
depression on either side of the disc of the thorax behind ; 
shape, and less dehiscent and less acuminate elytra. ‘The punctuation of the head and 
thorax is rather variable; the vertex is usually almost smooth, at most sparsely punc- 
tured. The basal lobe of the thorax is obsoletely carinate or a little raised, the 
convexity, of the median portion of the disc being continued to the tip, the latter being 
transversely notched in some examples, and unimpressed in others. 
hind tarsi are formed as in K. bifoveata. 
those described by Gerstacker. 
also by its narrower general 
The anterior and 
The species cannot be identified with any of 
4, Emenadia carinipennis. (Tab. XVI. fig. 9,2.) 
Moderately elongate, rather dull, the vertex and elytra shining; black, the elytra yellow, with the base 
narrowly black, the suture and lateral margin reddish, and the sublateral carina piceous; beneath black, 
with the metasternal epimera and the posterior coxe flavous behind, and the apex of each ventral segment 
testaceous ; legs reddish-testaceous, with the femora piceous; antennew brownish-yellow, with the extreme 
tips of the rami infuscate. Head with the front sparsely, the epistoma and occiput thickly and finely, 
punctured, the top of the vertex smooth, the latter very much raised, the front convex but somewhat 
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