34'2 MODERN CLASSIFICATION OF INSECTS. 



])is work upon the insects injurious to cultivators, has detailed, from 

 the observations of M. Schmidberger, the habits of Anthonomus 

 PoiTiorum (which ordinarily attacks the apple blossom, but occasion- 

 ally the young fruit, when set, both of apples and pears), An- 

 thonomus Pyri (which attacks the blossom-buds, blossoms, and leaf- 

 buds of the pear), and Nemoicus oblongus (which feeds upon the 

 leaves of the pear, apple, plum, apricot, and peach). In these 

 observations there is a confirmation of the statement of previous 

 authors, that the rostrum is employed to form a hole for the reception 

 of the eggs. De Geer has given the history of another species (An- 

 thonomus Ulmi), which, in the larva state, resides in the buds of 

 the elm. (Vol. v. tab. 6.) 



The larva of a minute species of Balaninus, of a black colour, 

 clothed with greyish hairs, whose transformations I have traced, 

 resides in the large and fleshy galls upon the leaves of willows, 

 occasionally in company with the larvae of Nematus Intercus. Bouche 

 has also described the larva of Balaninus salicivorus Sc/i., which 

 resides in the galls upon the leaves of Salix vitellina. The spe- 

 cies of Nedyus in like manner form galls at the roots of various 

 plants, N. contractus and assimilis having been reared by Mr. Kirby 

 from excrescences upon Sinapis arvensis. The former species also 

 does great damage to the turnip, by piercing a hole in the cuticle. 

 (lutrod. to Ent. i. p. 188.) Cleopus affinis also resides in galls upon 

 the roots of Sinapis arvensis ; Cleonus Linaria:, in galls at the 

 roots of Antirrhinum Linarise ; and Baris casrulescens, in the stems 

 of Reseda lutea; in their larva states. (Hammerschmidt, Observ. 

 Physiol. Pathol, de Plant. Gallarum Ortu. Wien, 1832. 4to.) De 

 Geer has given the history of a species of weevil, found upon the 

 plantain, the larva of which is long and spindle-shaped ; the dorsal 

 segments continuous, without hairs, and with a pale lateral line. 

 The head is small, and the tubercular prologs very small (vol. v. 

 tab. 7. fig. 17 — 21.) ; likewise the metamorphoses of a curious elong- 

 ated and niirrow species, Lixus paraplecticus ; the larva of which 

 resides in the stems of Phellandrium and Slum, and is asserted to 

 be very injurious to horses when they happen to swallow it with 

 their food ; causing the disease called paraplegia. The larva is long 

 and slender ; the body nearly cylindric, and but slightly attenuated 

 at each end ; the dorsal segments are finely wrinkled, and the tu- 

 bercular prologs attached to the three first segments alone very 



