60 . HETEROMERA. 
with a sharp prominent curved tooth at outer apical angle. Beneath slightly shining, very finely and 
densely strigose. 
Length 21 millim. 
Hab. Mexico, San Luis Potosi (Dr. Palmer). 
One example. 
99. Asida lata. (Tab. III. fig. 18.) , 
Broad oval, convex, black, shining. Head impressed in front, finely and sparingly punctured; prothorax 
transverse, the lateral margins a little dilated, broad, slightly reflexed, and swollen, the sides rounded, but 
little narrowed behind, narrowed in front, with the obtuse anterior angles a little prominent, hind angles 
obtuse, a little produced, and slightly overlapping the elytra, base bisinuate, and a little produced in the 
middle and rounded, disc smooth, the reflexed margins rugulose and crenulate; elytra at the base broader 
than the thorax, short, but little narrowed towards the base, widest about the middle, the marginal carina 
represented by a short thickened ridge only at the shoulders, humeral angles obtuse, with indistinct rows 
of feeble longitudinal elevations and scattered shallow punctures, or nearly smooth (the elevations obsolete) 
with a few very fine scattered indistinct punctures; anterior tibie with a sharp tooth at outer apical 
angle. Beneath almost smooth. 
Length 15-16 millim. 
Hab. Mexico, Hacienda de San Miguelito, San Luis Potosi (Dr. Palmer). 
Four examples. 
23. Asida marginicollis. (Tab. III. fig. 16.) 
Oblong ovate, convex, black, shining. Head transversely impressed in front, sparingly and finely punctured ; 
prothorax smooth or almost imperceptibly punctured, rather convex, the lateral margins swollen and 
reflexed with scattered rather fine punctures, slightly rounded at the sides, but little narrowed behind, 
the hind angles (formed by a continuation of the swollen margin) blunt, a little produced and slightly 
overlapping the elytra, a little narrowed in front with the angles obtuse, base rounded; elytra smooth or 
with a few very indistinct fine scattered punctures or scratches, broader than the thorax, the obtuse 
humeral angles thickened and raised and creased within, rounded at the sides, widest a little behind the 
middle, the marginal carina obsolete, apices very slightly divergent at the suture; anterior tibiz with a 
short tooth at outer apical angle. Beneath smooth, almost impunctate. 
Length 17-19 millim. 
Hab. Muxico, Guanajuato (Sallé). 
Three examples. This species may be known by its swollen reflexed thoracic 
margins. A. lata and A. marginicollis differ from typical Asida (Euschides) in having 
the hind angles of the thorax overlapping the elytra, and the elytra at the base wider 
than the thorax. 
24. Asida villosa. (Tab. III. fig. 13.) 
Broad, short ovate, convex, brownish black, slightly shining, pubescent, above densely clothed with long erect 
fulvous hairs. Head faintly impressed on each side in front, finely and sparingly punctured ; prothorax 
transverse, the disc strongly and transversely convex and impunctate, lateral margins broad ana reflexed 
crenulate, and with a few coarse scattered impressions within, broader at the base than in front, the sides 
strongly rounded, narrowed and feebly sinuate in front with the anterior angles acute a a little 
produced, rounded behind to the inwardly curved obtuse scarcely prominent hind angles, base trisinuate 
broadly impressed in the middle and with a rather prominent tubercle on each side: elytra almost 
