
13 
beyond the eyes at the sides and by the antenne, which terminate in a 
distinct three-jointed club (see fig. 9, 7). In its habits and life history 
it also closely resembles the preceding, but it is apparently somewhat 
restricted to the Southern States, although occasionally found in the 
North. Itis often reported in flour, meal, and grain, and is sometimes 
shipped north in consignments of rice. 
THE SLENDER-HORNED FLOUR BEETLE (chocerus mawillosus Fab.). 
The above-named insect should be mentioned here. It also feeds on 
flour and meal and is of frequent occurrence in the South and has been 
found as far north as the District of Columbia and southern Ohio in 
Indian corn, which appears to be its preferred food. 
The beetle resembles the two preceding species, but 
is lighter in color and a little smaller, measuring a 
trifle over an eighth of an inch in length. On the 
head, between the eyes, are two pointed tubercles, 
and the mandibles in the male are armed with a pair 
of slender, incurved horns. The insect in its several 
stages is illustrated at fig. 10. 
THE BROAD-HORNED FLOUR BEETLE (chocerus cornutus Fab.). 

A flour beetle that sometimes finds its way into yy. 11 Renocerus cor 
stores is the one above mentioned. Italsoclosely re- — wtus: male—entarged 
sembles preceding species, but may be distinguished — @™t20r Ss tusttation). 
from them by the broad, conspicuous mandibular horns in the male (see 
fig.11). It has been found in ground cereals of various sorts, including 
flour, meal, ‘‘germea,” rolled barley, bread, army biscuit, maize, wheat, 
and rice. In southern California it occurs even under bark, showing 
complete acclimatization. Its distribution in the 
United States is at present limited, but it 1s frequently 
met with in seaport towns, especially on the Pacific 
Coast, and is on the increase elsewhere. In some parts 
of Europe it is a veritable pest in bakeries by getting 
into the flour and into the masses of fermenting dough 
that accumulate upon the molds used in baking bread. 

THE SMALL-EYED FLOUR BEETLE (Palorus ratzeburgi Wissm.). 
Fie. 12.—Palorus 
ratzeburgi-much The smallest of the flour beetles known to injure 
enlarged (original). : F : : a 
cereals in this country is the one figured herewith. It 
looks not unlike preceding species, but, by comparison of specimens 
with a good lens, the differences are apparent. Although seldom ree- 
ognized it is already known to be more widely distributed in the United 
States than at least two of the preceding forms. The first report of its 
occurrence in this country was in 1882, when it was the cause of much 
annoyance in a mill near Detroit, Mich. In the District of Columbia 
it ranks second among flour beetles in abundance and injuriousness in 
feed stores, bakeries, and other places where cereal products are kept 
