APTEROCOLUS. 45 
1. Apterocolus gravidus, sp. n. (Tab. II. fig. 17, ¢.) 
Latissimus, chalybeo-niger, fortiter sculpturatus, antennis articulis 2° ad 5™ piceis. 
Long. cum rostro subporrecto 43 millim. 
Hab. Mexico, Cuernavaca (Sallé, Hoge). 
Antenne short, with large broad three-jointed club, the eighth joint transverse, the 
first two joints of the club each strongly transverse. Rostrum moderately long, much 
longer than the head. Thorax elongate, much narrowed in front, coarsely and closely 
punctured. Elytra with broad, deep grooves, which are coarsely sculptured ; interstices 
narrow and shining. Exposed parts of the dorsal segments coarsely punctured, the 
terminal segment so much deflexed as to be not visible from above. Legs thick; the 
spurs of the hind tibize conspicuous. 
Only two examples have been received of this remarkable Curculionid. The male 
has the ventral plates deplanate on the middle and covered with long white pubescence. 
In the female the apical portion of the rostrum is slightly longer than it is in the male. 
Our figure represents this latter sex. 
Subfam. nov. AL LOCORY NINA. 
The rostrum is very slender, quite cylindrical, a little curved, somewhat longer in one 
sex than in the other. The antenne are inserted close to the eyes on the underside of 
the rostrum; they are not in the least geniculate, and bear a very laxly articulated 
three-jointed club; the basal joint is as long as the following three together. The 
parts of the mouth are very small, but there is a very elongate peduncle to the mentum, 
the palpi are extremely minute, and the very small mandibles exhibit no trace of any 
angles or projections on their outer surface. The pronotum is flat, but has not lateral 
margins; the prosternum is very short, nearly all its length being occupied by the 
anterior coxe ; these latter are subglobose, but extend somewhat in the lateral direc- 
tion, and project very little perpendicularly. The sutures of the prosternum behind the 
coxa are minute, much consolidated, and very difficult to see; but I think there is a 
very small centrosternal piece, and that the apices of the epimera very nearly but 
not quite meet behind it. The middle coxe are round, rather large, not at all exserted, 
distinctly but not widely separated. Metasternum of moderate length. Hind coxe 
contiguous, transverse, rather large. Abdominal ventral segments five in number, 
subequal in length ; in addition there is a very minute, frequently retracted, terminal 
segment. ‘The sides of the ventral plates do not form any edge in apposition with the 
elytra, but are much infolded on the dorsal surface, and the side-margins of the elytra 
are free. The epipleuree become gradually narrower from the shoulders to one half of 
the length of the elytra and there disappear altogether. The apices of the elytra are 
separately rounded and leave the pygidial segment exposed. ‘The tarsi are broad, and 
