302 SUPPLEMENT. 
Hab. Panama, Volcan de Chiriqui (Champion). 
Intermediate, as it were, between S. aldicincta and S. jocosa. It is distinct, however, 
from the former by the red antenne and legs, from the latter by the black head and 
larger eyes. Antenne rather long and thin for a species of this section, very finely 
pilose, their second joint twice as long as broad, and rather more than half as long as 
the third. Head black, the palpi and mouth clear red; the eyes in the male are 
globular and prominent. The thorax is transverse; in the male it is more deeply 
lacerated and amorphous at the sides than even in S. dilacerata, the anterior process’ 
forming a sort of hook, and the posterior one is spine-like and projects over the 
shoulders; in the female it is widest behind, very slightly depressed, and the hind 
angles are somewhat thickened and reflexed. The scutellum, suture, and the lateral 
and apical margins of the elytra are white; and in this species the margin is flat and 
expanded towards the apex in the male. The legs are entirely red, and the subapical 
or divided segment of the abdomen in the male is reddish. 
A good series of this species was collected by Mr. Champion. 
S. festiva was at first considered by me to be a variety of S. albicincta, and is so 
recorded under that species at p. 96 of this volume. 
12 (p.) Silis ludicra. 
Nigro-fusca, parum nitida ; prothorace, ore, scutello, elytrorum marginibus, antennarum articulo primo pedi- 
busque, flavis, his, tibiis tarsisque fuscis; abdominis segmentis singulis margine apicali, apicalibusque 
totis flavis. Long. 5 millim. ¢. 
Mas. Prothoracis margine laterali processu duplici laminato, anteriore hamato; extus pilosa, disco in medio 
fortiter fossulato. 
Hab. Mexico, Presidio (Forrer). 
In such a difficult genus as this appears to be it is always unsatisfactory to describe a 
species from asingle male. In this case there is little doubt however that the specimen 
described pertains to a distinct species. It is nearest to S. festiva, but in addition to 
the dark antenna, tibie, and tarsi, the whole form (and especially the femora) is more 
robust. The anterior process of the thorax while it hooks round in something like the 
manner of that of S. festiva, has not the apical twisted bend so noticeable in that 
species, and does not leave so much space open between itself and the posterior one, 
but appears rather to rest uponit. In the single male example before me the fossa upon 
the disc is represented by a double punctiform impression, with a carina between, but 
this may only be accidental. ‘There is, indeed, a female specimen from Jalapa (Hége) 
which may pertain to this species, and which I cannot associate with any other; but 
this has the legs dark and slightly built, and the elytra have the suture concolorous, 
and the lateral margins only very narrowly pale. 
There is also one male from San José on the coast of Guatemala, which I think 
very doubtfully may be the same species. 
