100 



ENTOMOLOGY. 



antennae geniculate ; labrum wanting ; last spiracle not visible. 

 Rhyncophorus palmar um Linn. Here belong the rice, Galandra oryzm 

 (Linn.), and grain weevils, C. granarius (Linn.); the latter so great a 

 pest in granaries, the larva devouring the inside of the hull. 



Fig. 92.— Northern Brenthian. a, larva; b. pupa; c, beetle, female; d, head of 

 male; e, fourth antennal joint; g-l, parts of larval head; /, leg.— After Riley. 



Family Brenthidae. — Head differing as to sex; narrowed behind ; 

 antennae not geniculate; pro thorax very long. The female of the 

 northern Brenthian, Eupsalis tninuta (Drury), bores a hole in the 

 bark of the oak, pushing an egg into the hole; the males are very 

 pugnacious (Fig. 92). 



Fig. 93.— Hazel-nut weevil. 



6 ■ a 



Fig. 94.— White-pine weevil, a, larva; b, pupa. 



Family Curculionidae. — Mandibles with no apical scar; beak vari- 

 able in form and length; antennae usually geniculate. These weevils 

 form a family exceedingly numerous in species, which bore in the 

 bark of trees, in nuts, seeds, etc. Balaninus nasicm Say (Fig. 93); 

 Pissodes strobi Peck (Fig. 94); Conotrachelus nenuphar Herbst, the 

 plum weevil. 



Family Otiorhynchidae.— Mandibles with a deciduous piece leaving 



