OXACIS. 165 
traces of two raised lines on the disc; beneath densely punctured; legs (including the coxe) testaceous, 
the tarsi (the basal joint excepted) darker. | 
Length 54 millim. (¢ -) 
24. Oxacis minuta. 
Elongate, narrow, thickly clothed with rather coarse pubescence; the head and prothorax shining, the former 
piceous with the epistoma, labrum, and mandibles (except at the tip) testaceous, the latter reddish- 
testaceous with a narrow fuscous median vitta on the basal half of the disc; the elytra opaque, piceous, 
the suture from some distance below the base to beyond the middle flavous. Head very closely and finely 
punctured ; palpi brownish-piceous, the last joint of the maxillary pair triangular and with its apical and 
inner sides about equal in length; antenne (@) rather short, piceous, joint 1 about as long as 3, 11 
strongly constricted at the middle; prothorax. convex, longer than broad, the sides moderately rounded 
anteriorly and converging behind, the usual depressions almost obsolete, the surface very closely and 
minutely punctured; elytra closely, shallowly, and much more coarsely punctured than the pro- 
thorax, and with shallow longitudinal grooves; beneath densely punctured, piceous, the prothorax 
testaceous; legs piceous-brown, the anterior and intermediate coxe and the femora and tibiw at the base 
testaceous., 
Length 43 millim. ( 9.) 
Hab. Mexico, Ventanas in Durango (Hoge). 
One example only. ‘This is a very small and narrow species, with a convex, shining, 
reddish-testaceous thorax, and piceous head and elytra, the front of the former and the 
suture of the latter more or less flavous. It is not closely allied to any other here 
described. : | 
25. Oxacis dugesi. (Tab. VII. fig. 22.) 
Elongate, clothed with rather coarse ashy pubescence, black, the prothorax above and beneath reddish- 
yellow, the head and prothorax rather shining, the elytra opaque. Head very closely and moderately 
finely punctured, the eyes small and finely granulated; antenne black, moderately long in the male, 
shorter in the female, joint 1 rather longer than 3, 11 a little constricted at the middle; prothorax a little 
longer than broad, the sides strongly rounded anteriorly, slightly emarginate immediately before the apex, 
abruptly constricted at the middle, and subparallel behind, the disc broadly depressed in the middle before the 
base and with a large and very deep depression on either side anteriorly, the basal and apical margins raised, 
slightly emarginate in the middle, and grooved within, the surface very closely and finely punctured, a 
narrow space along the middle of the dise impunctate; elytra densely and shallowly punctured, subscabrous, 
and with traces of two fine raised lines on the disc; beneath densely punctured, thickly pubescent; legs 
black, the claws simple. 
Length 8 millim. (¢ @.) 
Hab. Mexico, Guanajuato (Sallé), Morelia in Michoacan (Hége). 
Two examples. In general facies this insect resembles certain somewhat similarly 
coloured species of Asclera, from which the simple claws and mandibles and other 
particulars sufficiently distinguish it. The last joint of the maxillary palpi is sub- 
triangular, with its apical and inner sides about equal in length, and the inner angle 
somewhat rounded. The mandibles are not cleft at the apex. Labelled Oxacis rujicollis, 
Dugés, in the Sallé collection. 
¥Y¥2 
