306 SUPPLEMENT. 
Very near to S. minuscula, but distinguished at once by the second joint of the 
antenne being very short, not more than a quarter the length of the third joint. Also as 
minor distinctions, but probably constant, the thorax is shorter, and the swelled portion 
of the margin is less prominent; the whole insect (especially the elytra) is more widened 
behind ; the elytra are blacker, and not finely clothed with silky pubescence ; and the 
antenne are more pubescent (as in S. oblita). 
Two specimens only were captured. 
28. Silis hilara. 
Nigro-fusca, cinereo-pubescens ; capite, prothorace, scutello, antennis basi, coxis femoribusque (apicibus exceptis) 
rufis, Long. 5 millim. 9. 
Mas. Prothoracis margine laterali antice tuberculari incrassato et dilatato. 
Femina (var.?). Prothorace transversim subquadrato, margine integro leviter sinuato ; pedibus nigris. 
Hab. Mexico (Sallé). 
Var.? Femina. 
Hab. Mexico, Cordova (Sallé). 
In the proportion of the antennal joints, and in the structure of the thorax, this 
pretty little Szlis is allied very nearly to S. pausilla; in the colour of the legs it is 
similar to S. minuscula, but it appears to vary in this latter respect; it is larger than 
average specimens of the latter, but the largest female of S. pauaxilla is equal to it, 
though more bulky. The red head and scutellum afford an easy distinction. 
Two females from Cordova, and a male and female without special locality, are all I 
assign to it. 
24. Silis ——? 
Hab. Mexico, Ciudad in Durango 8100 feet (Forrer). 
A single specimen of apparently a distinct species, but not in a condition for 
description. 
PLECTONOTUM (to follow the genus S¢%lis, p. 97). 
Plectonotum, Gorham *., 
Plectonotum was adopted by me for a minute black species of Telephoride allied to 
Silis, but of which the margin of the thorax is not notched or nicked, but with a 
thickened reflexed edge in its front half, projecting like a tubercle, and the hind angle 
completed, and not defective or cut out in the male. This little species was captured 
by Mr. Whymper at Quito, Ecuador, at an altitude of 9500 feet, and was named by me 
Plectonotum nigrum. Among My. Champion’s collections is one other species which it 
* The description of this genus is unpublished as yet ; it will appear in Mr. Whymper’s forthcoming work on 
the higher mountains of Ecuador. 
