14 MISC. PUBLICATION 341, U. S. DEPT. OF AGRICULTURE 
R. N. Dopson, of this Bureau, who conducted rearing experiments in 
which fertile eggs were produced by each of 32 virgin females. 
The species is polyphagous in both the larval and adult stages and 
has been found feeding on at least 50 different kinds of plants. The 
chief damage is done by the larva, which feeds underground on roots. 
Serious injury has been reported to potato and peanut crops as well 
as to various ornamental and garden plants. 
The size, white stripe of elytron, and long, fine elytral setae dis- 
tinguish Jewcoloma from any other curculionid of this region except 
peregrinus. In most cases peregrinus and leucoloma, when examined 
without magnification, can be separated by the difference in elytral 
appearance; in peregrinus the elytra seem to be nonstriate, the punc- 
ture rows being obscured by the scales, whereas in the less densely 
scaly lewcoloma the puncture rows are visible as narrow, dark lines. 
The shape of the spermatheca does not vary much in either leucoloma 
Or peregrinus. 
The corbel of lewcoloma is of the open type although traces of the 
anterior comb are sometimes detectable, but so closely approximated 
to the distal comb that the corbel plate is nearly or quite effaced. In 
the specimens dissected a stylus was usually found on each coxite, 
but in some examples the stylus was absent from one or both coxites. 
(2) PANTOMORUS (GRAPHOGNATHUS) PEREGRINUS, new species 
(Figs. 1, B; 2, F; 4, BE) 
Length 7-10.5 mm. General color light brown (avellaneous to buffy-brown of 
Ridgway’s Color Standards and Color Nomenclature), pronotum usually lighter 
than elytron, the latter with a black (subglabrous) stripe toward side bordering 
inner margin of the white stripe; dorsal scales dense, obscuring the serial pune- 
tures on elytra; elytral setae slender but stiff, and of two fairly well differen- 
tiated lengths, the shorter ones predominating on disk, the longer ones more 
numerous laterally and on declivity. 
Head thick, scales paler above and below eye and on side of rostrum below 
scrobe, some or all the scales on subapical area and on mandibles usually coppery 
or greenish, setae above eye pale, those elsewhere on dorsum of head and rostrum 
mostly brownish; rostrum stout, dorsum subplanate to feebly impressed, median 
groove slightly widened apically, subapical area not, or feebly, impressed, nasal 
plate with posterior margin not, or scarcely, elevated; scape slightly exceeding 
hind margin of eye, funicular segment 1 two-fifths to three-fourths as long as 
2, 2 fully as long as 3+4, which are subequal; eye slightly elliptical. Prothorax 
wider than long (about 6 to 5), widest near middle, only a little wider at base 
than at apex, a trifle more narrowed basally than in Jeucoloma, broadly rounded 
at sides, which are often slightly emarginate near basal angles ; pronotal vestiture 
whitish to brown, the setae inclined and about as long as the shorter elytral 
setae, the paler scales forming a narrow, whitish, median stripe which is usually 
distinct in basal half and near apex but rarely distinct throughout, a curved 
stripe, broadest basally (broader than in leucoloma) beginning opposite elytral 
intervals 3 and 4, and a lateral stripe which is usually present in basal half only, 
the two latter stripes often poorly defined or nearly absent; pronotal surface 
(normally covered by scales) with fine, sparse punctures intermixed with minute 
ones, the sculpture smoother than in lewcoloma, basal margin sometimes slightly 
prominent laterally, median groove fine, shallow, and usually closed over with 
scales. White scutellum conspicuous. Conjointed elytra broadly, evenly emar- 
ginate at base, humeri slightly prominent, sides nearly straight and slightly 
diverging from base to about basal two-fifths; intervals flat, each with about 
three confused rows of setae, those on lateral white strip usually white, those 
on disk usually darker (yellowish to fuscous), the long ones apparently darker, 
on the average, than the short anes; scales narrower and darker, or nearly want- 
ing, on a conspicuous, black stripe located chiefly on interval 6, the stripe nar- 
rowed basally and apically and, in different specimens, extremely variable in 
