40 



a successful trans^forjiiation. If the cell remains unbroken the weevil 

 always escapes by the path of least resistance, cutting its wa}^ through 

 as in the case of a square (PI. V, fig. 21). The material removed does 

 not appear to be eaten, but is rather cast aside and left within the cell 

 as a mass of fine debris. 



CHANGES AFTER EMERGENCE. 



At the time of emergence the weevils are comparatively soft, and 

 they do not attain their final degree of hardness for some time after 

 they have begun to feed. If they never feed they never harden. 

 The color of the chitin is of an orange tinge at the time the weevils 

 leave the squares or bolls, but after exposure for some time it turns 

 to a dark chocolate brown. The development of the hairdike scales 

 is probably entirely checked b}^ the drjang of the chitin, but the 

 darkening /3f the ground color makes the scales more apparent, and 

 thus gives the impression of further development after emergence has 

 taken place. 



DESCRIPTION OF ADULT." 



The general outlines of the body of the weevil are shown in Plate I, 

 figures 1, 2, and 6. The color varies from a reddish-brown, in 

 weevils which have just become adult and left the squares, to a dark 

 gra3^-brown, in weevils which have been exposed to the air for some 

 time. Weevils which have developed in bolls are usually more 3^el- 



«The following technical description of this species is taken from the Revision of 

 Genera and Species of Anthonomini Inhabiting North America, by Dietz, in Trans- 

 actions of American Entomological Society, Vol. XYIII, p. 205. 



Antlionomus grandis Boh. — Stout, subovate, rufo-piceous and clothed with coarse, 

 pale-yellowish pubescence. Beak long, slender, shining, and sparsely pubescent at 

 the base; striate from base to the middle, striae rather coarsely punctured; apical 

 half finely and remotely punctured. Antennae slender, second joint of funicle longer 

 than the third; joints 3-7 equal in length, but becoming gradually wider. Head 

 conical, pubescent, coarsely but remotely punctured, front foveate. Eyes moder- 

 ately convex, posterior margin not free. Prothorax one-half wider than long; base 

 feebly bisinuate, posterior angles rectangular; sides almost straight from base to mid- 

 dle, strongly rounded in front; apex constricted and transversely impressed behind 

 the anterior margin; surface moderately convex, densely and subconfluently punc- 

 tured; punctures irregular in size, coarser about the sides; pubescence more dense 

 along the median line and on the sides. Elytra oblong, scarcely wider at the base 

 than the prothorax ; sides subparallel for two-thirds their length, thence gradually 

 narrowed to and separately rounded at the apex, leaving the pygidium moderately 

 exposed; striae deep, punctures large and approximate; interstices convex, rugulose, 

 pubescence somewhat condensed in spots. Legs rather stout, femora clavate, ante- 

 rior strongly bidentate, inner tooth long and strong, outer one acutely triangular 

 and connected with the former at the base; middle and posterior thighs unidentate. 

 Tibiae moderately stout, anterior bisinuate internally, posterior straight; tarsi moder- 

 ate, claws broad, blackish, and rather widely separate; tooth almost as long as claw. 

 Long. 5-5.5 mm.; 0.20-0.22 inch. 



