36 Psyche [Sept. -Dec. 
pubescent in the 9 , but some individuals, evidently males, with 
an apical thinly pubescent area. Hind femora not incrassate, 
the width equal to almost Yz of the length, the inner surface flat, 
the under surface somewhat flattened, with a weak carina on 
the inner margin that bears a single denticle before the apex; 
hind tibiae carinate externally, the apex with two equal short 
teeth (one a little longer in t exanus). Surface of pronotum and 
elytra densely covered with appressed pubescence, mottled 
white and brown. 
This genus seems to be most nearly related to Gibbobruchus. 
Species 
Neltumius arizonensis (Schaeffer), genotype. 
Neltumius gibbothorax (Schaeffer), new comb. 
Neltumius texanus (Schaeffer), new comb. 
Key to genera with longitudinal pronotal elevation. 
1. Hind femora incrassate, with a strong inferior preapical 
tooth followed by spines or denticles (2) 
Hind femora slender, simple except for one small inferior 
tooth or spine (N. Amer.) Neltumius 
2. Antennal sockets distant from base of mandibles by the 
length of the first or second antennal segment (3) 
Antennal sockets practically contiguous to mandibles. (N. 
and S. Amer.) Gibbobruchus Pic 
3. Pronotal ridge strongly elevated; antennae of male pecti- 
nate Falsobruchus Pic 
Pronotal ridge broad and barely elevated; antennae not 
pectinate Caryedes Hummel 
Callosobruchus Pic 
Recent authors place chinensis L. and maculatus Fabr. in Cal- 
losobruchus (Cf. Bridwell ’29, p. 40, ’32, p. 104, Baeckmann 
’29, p. 160, and Herford ’35, p. 5) a fact which has escaped the 
compilers of the third and fourth supplements to Leng’s Cata- 
logue, as has also the fact pointed out by Bridwell that the 
correct name for quadrimaculatus F. is maculatus F. 
Megacerus Fahraeus 
The species of this genus of which the habits are known infest 
the seeds of Convolvulaceae. Bridwell (1929, p. 112) has des- 
