100 
obliquely truncate at the tip, the upper ridge running off to the 
fore angle. (Fig. 1 b represents the head of the male, seen from 
beneath; 1 b the same seen sideways; le one of the horns, seen 
within, to show the thick brush of fulvous hairs.*) The antenne, 
except the basal joint, are dark fulvous; the prothorax is similar 
to I.Weberi. The elytra of the male are very dark purplish-brown, 
with the scutellum and suture greenish, and they are slightly 
irrorated, especially towards the suture, with luteous scales. The 
underside of the body is shining «neous, with short fulvous pile 
upon the hind edge of the thighs, and down the middle of the 
abdomen. The middle tibie are curved, and slightly bidentate in 
the middle, and the hind tibiz have a single tooth near the middle. 
The female is darker-coloured than the male, and has the clypeus 
slightly concave ; or rather, the lateral and front edges are ele- 
vated: the elytra are much more thickly irrorated with luteous 
scales. The middle tibiz are straight and bidentate in the 
middle, and the hind tibize have a single tooth in the middle.+ 
The teeth in the anterior tibize are not so acute as in the female 
of I. Weberi. 
Note. Perty’s figure represents the male of I. Weberi with the 
horns of the head emarginate at the tip. The figure of the male 
in Gory and Perchéron’s Mon. Cét., pl. 13, f. 1, is unlike any 
specimen I have yet seen in the form of the horns. 
INCA BESKII. Plate 73, fig. 4 ¢,5 9- 
‘« T. fusco-niger, subtus wnescens fulvo-hirtus supra fulvo guttatus; elytris atro-purpureis ; 
fascia media obsoleta notatis.” 
Syn. J. Beskii, Dejean ; Burmeister. 
Habitat ‘‘ Novo Friborgo ;’’ Brasiliz inter. In Mus. D. Sommer, &c. 
No figure of this species having hitherto been published, I am 
happy to be able to give a representation of both the sexes, by 
the kindness of Mr. Sommer. There is a specimen, agreeing with 
the male in the British Museum Collection, with the MS. name 
biguttata attached to it. 
The plant represented in the Plate is the splendid Orchidaceous 
Maxillaria cruenta of Lindley, from Guatemala. 
* Wig. 2 a represents the head of the male of I. Weberi, seen from beneath ; 2 b one of 
the horns of the head, seen from above; 2 c the head, seen from the side ; and 2 d one of 
the horns seen within. 
+ The hind tibie in the female (in the British Museum Collection) have two acute teeth 
in the middle. 
