BROAD-NOSED GRAIN WEEVIL. 9 
area, surrounding the mandibular foramen. Mandibles stout, triangular, with the 
-apex produced into an acute apical tooth. Inner edge toward apex provided with a 
-subapical tooth and a small medial tooth, no molar structure. Dorsal area of each 
mandible armed with a pair of stout bristles set close together. Eye represented by a 
well-defined black spot beneath the exoskeleton. Clypeus broad at base, sides nar- 
‘rowing towards apical angles; distinctly broader but not as longas labrum. Epistomal 
margin provided with two fine hairs on each side. Labrum about as broad as long, 
‘rounded in front, provided with three pairs of large sete and five pairs of short, thick- 
-ened, marginal sete. 
Maxillz terminated by a 2-jointed palpus and setose maxillary lobe. Maxille each 
provided with four setz as follows: One on first segment of palpus, two on vaginant 
membrane between palpus and palpifer, and one stouter and larger midway 
between palpusand cardo. Thestipeslabii enforced posteriorly by a median triangular 
chitinization bear 2-jointed palpi and a single pair of setze. Ligula bearing four small 
setze. Mentum and submentum fused and bearing three large setz on each side. 
Pronotum simple and undivided. Prescutal and scuto-scutellar areas roughly indi- 
-cated by rows of sete. Mesothoracic and metathoracic segments divided above into 
two areas representing prescutum and scuto-scutellum; below and adjacent to 
-epipleurum is the alar area. Below ventro-lateral suture are a well-defined hypo- 
pleurum, coxal lobe, and eusternum. The thoracic spiracle, located on the pre- 
epipleural lobe of the mesothorax, is bifore, with the fingerlike air tubes pointing 
-dorsad, and is somewhat larger than the abdominal spiracles. Ten abdominal seg- 
ments, ninth small, tenth reduced. Each tergum of first eight abdominal segments 
-divided above into three distinct areas—praescutum, scutum, and scutellum. Below 
-and adjacent to epipleurum is the alar area. Below ventro-lateral suture are a well- 
defined hypopleurum, coxal lobe, and eusternum. Abdominal segments provided 
with setze as follows: Two on prescutum, five on scutellum, two on alar area, two on 
-epipleurum, one on coxal lobe, and two on eusternum. Each of the first eight abdom- 
inal segments bears a bifore spiracle, that of the eighth being slightly larger than the 
rest. 
Stage. Width of larval head. 
1 ies Spree atte Spee Ne ea a ARN Ug te Hae Jl 0.22 to 0.23 mm, 
ep eS Bee Ah SO Paice Malan PA tA Be GA a .oo to .38 mm. 
Seema eee ce cer Se NS Sea Micha te aiaiens RPE REGS AG ava 'atae .o3 to .O7 mm. 
PUPA. 
Pupa white when first transformed. Length, 2.8 to 3 mm.; width, about 1.3 
mm. Tipsof elytra attaining the sixth abdominal segment, tips of metathoracic tarsi 
not extending beyond wing tips. Head rounded, beak short and broad. Head pro- 
vided with two prominent spines toward the vertex, two smaller ones on sides 
above eyes, a spine on each side of front between eyes, two pairs on beak between 
frontal ones and base of antenne, two pairs on beak between base of antenne and tip 
of beak, and four pairs of small setz on tip of beak. Prothorax provided with two pairs 
of antero-marginal setigerous tubercles, one pair of antero-lateral, two pairs of postero- 
lateral, and four pairs of dorsal setigerous tubercles. Mesonotum and metanotum 
each provided with two pairs of spines. Abdomen with eight distinct dorsal tergites; 
dorsal area of each armed with two pairs of large spines; lateral area of each tergite 
armed with a spine at base of which is a small seta. Epipleural lobes each obscurely 
armed with one or two minute sete. Ninth segment armed as usual with two promi- 
nent pleural spines. 
