6 BULLETIN" 231, IT. S. DEPARTMENT OF AGRICULTURE. 



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

 anterior strongly bidentate, inner tooth long and strong, outer one variable but con- 

 nected with former at base; middle femora unidentate in male, rarely with minute 

 second tooth in female; posterior femora unidentate. Tibiae moderately stout, more 

 or less bisinuate internally; tarsi moderate, claws broad, blackish, and rather widely 

 separated; tooth almost as long as claw. Length, from 2.3 to 6.75 mm.; width, from 

 1.1 to 3.6 mm. 



Anthonomus grandis thurberise Pierce. — Stout, ovate, mahogany red, and clothed with 

 coarse, raw sienna pubescence. Beak long, slender, shining, and sparsely pubescent 

 at base; more or less distinctly striate to about the middle; apical half finely and 

 remotely punctured ; the beak of the female is slightly longer and more slender than 

 that of the male, more shining and less coarsely punctured and striate; the female 

 antennae are inserted at about two-fifths of the distance from the apex of the beak to 

 the eyes, while the male antennae are inserted at one-third of the distance from the 

 apex. Antennae slender, second joint of funicle longer than the third; joints 3-7 equal 

 in length but becoming gradually wider; the club piceous black, scape and funicle 

 mahogany red; club with apical margins of the first two segments usually distinctly 

 annulate with fine whitish hairs. Head conical, pubescent, coarsely but remotely 

 punctured, front foveate. Eyes moderately convex, posterior margin not free. Pro- 

 thorax about one-third wider than long; base bisinuate, posterior angles more or less 

 rectangular; sides usually converging from near base to apical third and thence strongly 

 convexly narrowed to apex; apex sometimes constricted and transversely impressed 

 behind the apical margin; surface moderately convex, densely and sometimes sub- 

 confluently punctured, punctures irregular in size, sometimes coarser about the sides; 

 pubescence evenly distributed; without sharply defined vittae. Scutellum broad, 

 subquadrate, rarely subtriangular, flattened. Elytra broad, scarcely wider at the 

 base than the prothorax; sides slightly convex in basal two-thirds, thence strongly 

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

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

 pubescence more regular but slightly condensed in spots. Legs rather stout, femora 

 clavate, anterior always strongly bidentate, inner tooth long and strong, outer one 

 variable in shape but connected with former at base; middle femora bidentate; poste- 

 rior femora almost always unidentate. Tibiae moderately stout, anterior and median 

 bisinuate internally, posterior straight; tarsi moderate, claws broad, blackish, and 

 rather widely separated, tooth almost as long as claw. Length, from 2.5 to 6.7 mm.; 

 width, from 1.8 to 3.6 mm. 



LONGEVITY OF ADULT WEEVILS. 



Several series of experiments were conducted to determine the lon- 

 gevity of the weevils upon different foods. These experiments not 

 only compare the two varieties of the weevil, but compare weevils 

 from Tallulah, La., with those from Victoria, Tex.; various Malvaceae 

 with one another and with a diet of water only; different parts of the 

 same plant; different seasons- and also the two sexes. The data 

 obtained are presented in concise form in Table I. 



