SPERMOPHAGUS.—CARYOBORUS. 503 
has a very mottled appearance. Pygidium grey, mottled with black. Front coxe 
moderately distant; prosternal process very short, received on the front of the meso- 
sternum a little above the apex of the latter, which is not excavated for its reception. 
This species is allied to S. barcene but is of a darker colour, and is readily identified 
by the quite flat eyes. Six examples have been found. 
24, Spermophagus planifemur. 
Spermophagus planifemur, Chevr. Ann. Soc. Ent. Fr. 1877, Bull. p. exxxiv.’ 
Hab. Mexico (Melly) 1. 
We have received nothing agreeing with this description. The eyes are said to be 
“minute reticulatis;” and this suggests that the species may be near S. barcene or 
S. trroratus. 
25. Spermophagus titivilitius. 
Spermophagus titivilitius, Boh. in Schénh. Cure. i. p. 136°. 
Hab. Mexico}. 
IT regret that I have not been able to make the acquaintance of this species, which 
was designated by Schonherr as the type of Spermophagus. I cannot form any opinion 
as to its position, no special structural characters being alluded to in the description. 
CARYOBORUS. 
Bruchus (Grex B. Caryoborus), Schonherr, Cure. i. p. 92. 
Caryoborus, Horn, Trans. Am. Ent. Soc. iv. (Jan. 1878), p. 312. 
Bruchus (pars), Gemm. & Harold, Cat. x. p. 3219. 
This genus may be retained, though it is not easy to differentiate it from Bruchus by 
any character that is quite invariable in the two genera. The separation of the front 
coxee is of no avail, as some Eastern Caryobori have them contiguous. The thorax 
margined all round, and the peculiar structure of the femora, in conjunction with the 
elongate wing-cases, suffices to distinguish it. The femora are very broad and com- 
pressed, and terminate beneath as an edge quite without longitudinal groove or sulcation. 
A similar structure of the legs prevails in certain Bruchi of the Section “ Pachymerus ” 
(Group 1 huj. op.), but is accompanied there by a great abbreviation of the hind body 
and wing-cases. C. chiriquensis here described affords a fresh illustration of the 
difficulty of arranging the Bruchide in sharply-defined genera. Hitherto Spermophagus 
has been considered as quite satisfactorily distinguished from the other members of the 
family by its species possessing two articulated spurs on the hind tibia: the Caryoborus 
I am now speaking of is, however, provided with two small tibial spurs, though in other 
respects a typical member of the genus. 
Caryoborus is a very widely-distributed genus ; but the Eastern species are insignificant 
