100 
INSEC'TA SAUNDERSIANA. 
Genus STENOCERUS, Schbnherr. 
This genus has been established by Schbnherr for certain American 
species: the type is the Anthribus fulvitarsis of Germar. To these he has 
joined a species from Java, Sten. collaris, Chevr., very different in its 
generic character, and another from New Guinea, Anthr. Garnotii, 
Guer., which he had not seen, also equally distinct from that natural 
American genus. 
These two species excluded, the genus remains one of the most homo¬ 
geneous of the family, and, like the Ptychoderi , contains species so closely 
allied in shape, sculpture and general distribution of colours, that, without 
great care and the sight of many specimens of some of them, differences 
can scarcely be detected between them: their markings and sculpture 
being so similar, I have tried to separate them according to the relative 
proportions of the body, thorax, elytra, &c., with careful scales of these pro¬ 
portions and comparative descriptions, being the only way I found possible 
for their determination. Hoping that the result of my observations 
on their specific differences may not be useless, I introduce them here, 
especially as I know all the Schonherrian species, the type of S. collaris 
being in the collection of my obliging friend M. Chevrolat, and S. Garnotii 
existing in the museum of M. Guerin,—both being, as before observed, 
types of distinct generic forms. 
Stirps I. Corpus ovato-subellipticum, latitudine non duplo longius , 1 
majoris magnitudinis; thorace magis transverso, longitudine 
non ^ latitudinis, elytris eeque lato; anterius valde convexo- 
subpulvinato ; lateribus ante basin magis conico ampliato 
1 In all the proportions and measures taken of the species of this 
genus, I have omitted the head and rostrum: these, being more or less 
deflected and inserted, would have been detrimental to the exactness 
of the admeasurement. 
