16 COLEOPTERA — CHLAMYDAE. 



the other lines are semiobsolete. The usual median carina 

 of the pygidium is obsolete. 



Very close to amazonica Jac, but that species has only the 

 antennae black, no other marks. The punctuation and lines 

 of the elytra are very different and the prosternum differs in 

 shape, amazonica being much more gradually narrowed from 

 front to rear, both species have the small teeth on the thorax 

 next the scutel. 



Clilamys serratifroiis nov. sp. Flavous, with purplish clouds 

 on the hump of the thorax and on the elytra, noticeably one behind 

 the scutel, front of the head from the labrum back nearly to the ante- 

 rior edge of thorax, deeply excavated, the upper part with the sides 

 rounded to a sharp point at the rear, the apex of the point almost 

 attaining the rear margin of the head, the entire edge sharply cari- 

 nate, with three teeth on each side, the lowest and largest at the outer 

 angle of the epistome, the other two at the canthus of the eye ; rear 

 half of the suture dentate, prosternum rather abruptly narrowed just 

 before the half, then nearly parallel, chanelled, margined and punc- 

 tate to obtuse end ; length 4.5 mm. 



Type. — (f ; Amazons, first Jacoby collection. 



The antennae are rather long, the five lower joints rufous, 

 the remainder black, the 2d joint very stout, rounded and 

 obconic, 3d and 4th elongate, nearly equal and only slightly 

 dilated, the excavation of the head is everywhere opaque, 

 except the anterior angles, which are smooth polished, the 

 teeth are sharp and slightly upcurved ; beginning at the 

 upper canthus of the eye, the excavation is narrowed by an 

 angulated and curved line to the rear point, which almost 

 attains the margin of the thorax. The thorax is covered 

 with punctures which are coarse at the apex of the hump, 

 which is large, rounded and rather sharply declivous, and 

 sharply limited by the basal sulcus, the median sulcus is 

 broad and well marked, obsolete in front, the front and 

 rear declivities are colored with rufous clouds, the rear edge 

 has two obtuse teeth over the scutellum, the elytra are 

 strongly constricted at the sides behind the shoulders, de- 

 pressed about the scutel and uneven with tubercles and 

 ridges of which the most prominent are as follows : three 

 sharp tubercles below the base, arranged transversely, a 



