TRIBK XI. P.ALAN I XI. 



265 



been observed in West Virginia by Fred E. Brooks, to issue from 

 the earth late in August, laving its eggs through the spines of the 

 bur, an operation noted in one instance as occupying 56 minutes. 

 The larvae (Fig. 74) eat the nuts, falling within them and then 

 leaving them to burrow into the ground, where they remain as 



a, d I 



Fig. 74. Larger chestnut weevil, 

 male pupa; d, eggs. All enlarged. 



a, Larva; b, c, fe- 

 (After Chittenden.) 



larvae until the following July, when pupation takes place. B. 

 caryatrypes Boh. is now regarded as a synonym of proboscideus 

 and the latter is easily known from all other American species by 

 its having the second joint of funicle longer than first. 



The following names have been proposed for two smaller, more 

 western forms Avhich we regard only as varieties : 



B. hariolus Casey, 1910, 114. Smaller, less stout and more acuminate, 

 with slightly coarser elytral striae, shorter legs and beak; fifth ventral of 

 male feebly impressed, with apex moderately sinuate and briefly, sinuately 

 beveled. Length 8 8.5. Indiana. (?) 



B. cylinclricollis Casey, 1910, 114. Smaller, more slender, vestiture al- 

 most uniform pale gray; beak shorter and nearly straight; thorax not con- 

 stricted at apex. Length 7.5 mm. Tennessee. 



384 (8962). BALANIIVUS CARY.E Horn. 1873, 460. 



Ovate. Brownish, subopaque, very sparsely pubescent with yellowish 

 hairs; above and beneath less mottled than usual. Beak of female much 

 longer than body, that of male shorter, very slender, slightly thickened 

 basally. First joint of funicle longer than second. Thorax wider than 

 long, sides strongly curved, slightly sinuate in front; disc moderately con- 

 vex, densely and coarsely punctured. Elytra oval, moderately convex; 

 striae punctured, intervals flat, roughly punctured. Scales beneath paler, 

 narrow, hair-like. Femoral tooth large, prominent, with the outer edge 

 perpendicular, forming with the apex of the femur a right angle which is 

 not rounded. Fifth ventral of male subconcavely flattened, sparsely clothed, 

 apex broadly and feebly sinuate; last ventral of female more deeply im- 

 pressed. Length 7 9 mm. (Fig. 75.) 



Vigo Co., Ind., scarce; Oct. 15. Batavia, New York, Sept. 14. 



