498 SUPPLEMENT. 
portion of the disc finer and more scattered, the epipleure also with scattered coarsish punctures ; beneath 
coarsely punctate, the ventral surface also sparsely and distinctly, in some specimens rather coarsely, 
punctured, the punctures usually coarser towards the sides. 
Length 23-26, breadth 103-13 millim. (¢ 9.) 
Hab. Mexico, Villa Lerdo in Durango (Hége). 
Fight examples. A. segregata and A. obliterata differ from A. palmert in having 
the lateral margins of the thorax less reflexed and more shallowly grooved within, 
the disc very much more finely punctured, and the anterior angles more produced ; 
A. segregata also has the elytra more coarsely and closely punctured than in that species. 
21 (p). Asida feda. (Tab. XXII. fig. 16.) 
Very robust, rather elongate, broad, black, the head and prothorax opaque, the elytra shining, glabrous. Head 
very sparsely, rather coarsely punctate ; prothorax very wide, broader than long, much narrower at the 
apex than at the base, the sides rounded at the middle, obliquely converging in front, and sinuate before 
the base and apex, the apex deeply emarginate, the anterior angles strongly, triangularly produced, acute, 
the hind angles acutely produced and extending a little backwards, the base subtruncate at the middle 
and without median lobe, the disc feebly convex, almost smooth, or, at most, very sparsely, minutely 
punctate, the lateral portion with coarse scattered punctures, the margins very broadly expanded, trans- 
versely wrinkled and shallowly grooved within ; elytra convex, rather elongate, the width of, or very 
little wider than, the prothorax at the base, subparallel in their basal half, or very slightly widened 
towards the middle, with a prominent humeral callus, which is not continued downwards in the form of 
a marginal carina and is slightly excavate within for the reception of the hind angles of the prothorax, 
the surface, including the flanks, sparsely, coarsely punctate, the basal portion of the disc sometimes with 
finer punctures, the epipleure at the apex separated from the flanks by a sharp carina; beneath sparsely, 
coarsely punctate, the ventral surface finely scabrous, with fine scattered punctures and shallow longitu- 
dinal wrinkles ; prosternum rounded and declivous behind ; anterior tibise sharply toothed at the apex, 
rather coarsely denticulate on their outer edge. 
Length 20-29, breadth 10-14 millim. (¢ @.) 
Hab. Mexico, Villa Lerdo in Durango, Saltillo in Coahuila (Hége). 
.Sent in abundance from Villa Lerdo. More parallel than A. segregata and A. pal- 
meri; the thorax relatively broader, with the lateral margins more broadly expanded 
and the hind angles more produced and extending a little backwards; the elytra less 
dilated behind, more regularly convex, with a prominent humeral callus, but no trace 
of a marginal carina. The disc of the thorax is almost smooth, or, at most, very 
sparsely, minutely punctate. 
21(s). Asida tarda. (Tab. XXII. fig. 17.) 
Very broad, short, dull black, glabrous. Head shallowly, transversely depressed in front, sparsely, rather 
coarsely punctate ; prothorax broader than long, moderately rounded at the sides, the latter sinuate and 
slightly converging behind, the hind angles prominent, rectangular, and outwardly directed, the apex 
deeply emarginate, the anterior angles triangularly produced in front, the dise feebly convex, sparsely, 
finely punctate, the lateral portion with very coarse scattered punctures, the margins thickened, rather 
hroadly expanded, and shallowly grooved within, the base truncate, without median lobe; elytra short, 
moderately convex, wider than the prothorax, a little rounded at the sides, widest at the middle, with a 
raised marginal carina extending from the very prominent obtuse humeri (which are excavate within for 
