604 SUPPLEMENT. 
Astrotus seticornis (p. 67). 
To the Mexican locality given, add :—Salazar (Hége).. 
Six specimens. 
4, Astrotus undatus. (Tab. XXII. fig. 25.) 
Oblong-oval, flattened above, piceous or pitchy-brown, opaque, sparsely clothed with rather long, 
scaly hairs. Head coarsely, thickly punctured; antenne moderately | slender, clothed with very long 
sete, the intermediate joints longer than broad, ovate, the tenth strongly widened ; prothorax broader 
than long, not wider at the base than at the apex, the sides rounded at the middle, converging 10 front 
and behind, and sinuate before the base, the latter truncate, the apex deeply emarginate, the anterior 
angles sharp, the hind angles rectangular, the lateral margins expanded and raised, shallowly grooved 
within, the surface coarsely, thickly punctate, the disc with a smooth median line and usually with one 
or two irregular depressions on either side; elytra flattened, widest beyond the middle, gradually 
narrowing anteriorly, and strongly produced at the apex, with a serrate, sharply raised, marginal carina 
extending from the rounded humeri nearly to the apex, and numerous very irregular transverse or 
oblique raised lines and points, which become more distinct beyond the middle, the interspaces and 
epipleurs with fine, deep, scattered punctures ; beneath slightly shining, coarsely punctate, the punctures 
on the venter finer and submuricate, each bearing a decumbent yellowish hair; prosternum declivous 
behind ; middle coxal cavities almost closed externally ; anterior tibiee with a short tooth at the apex. 
Length 83-134, breadth 34-6 millim. (¢ 2.) 
Hab. Mexico, Ventanas in Durango (Hége). 
decumbent, 
Numerous examples, all in very clean condition. Allied to A. seticornis, but 
differing from it in the truncate base of the thorax, the less oblique humeri, and the 
stouter antenne; the elevations on the elytra are less distinct and more interrupted, 
the hairs are longer and coarser, and the punctuation is very sparse. The following is 
also an allied form. | 
5. Astrotus erosus, 
Oblong-oval, black, thickly covered with a brownish agelutinated earthy coating ; the prothorax with short, 
decumbent scaly hairs; the elytral elevations surmounted by fascicles of very coarse semi-erect hairs, the 
marginal carina with similar hairs. Head thickly punctured; antenne short, slender, clothed with very 
long sete, the intermediate joints longer than wide, ovate, the tenth greatly widened; prothorax 
transverse, scarcely wider at the base than at the apex, narrowed in front and behind, and slightly 
sinuate before the base, the latter truncate, the hind angles subrectangular, the apex rather deeply 
emarginate, the anterior angles sharp, the disc feebly convex, the lateral margins raised, shallowly 
grooved within, the surface thickly punctured, the disc (apparently) with a smooth median line; elytra 
widest beyond the middle, a little rounded at the sides, narrowed in front, and produced at the apex, 
with a marginal carina extending from the broadly rounded humeri nearly to the apex, a short median 
carina at the base, and some oblique, partly coalescent, raised lines and points, the rest of the surface 
and the epipleure coarsely, sparsely punctate ; beneath closely and coarsely punctured, the punctures on 
the venter finer and muricate; prosternum declivous behind; middle coxal cavities almost closed 
externally ; anterior tibiee with a rather long tooth at the apex. . 
Length 10, breadth 44 millim. 
Hab. Mexico, San Juan de los Llanos (Flohr). 
One example. Broader and less parallel than A. seticornis and A. undatus. The 
