386 MODERN CLASSIFICATION OF INSECTS. 



narrow end. This fact had, however, been long previously recorded 

 in Fuessly's Archives (p. 53. pi. 31.). The larva, according to the 

 last-named author, has the body curved, and not greatly unlike that of 

 a snrall cockchafer. When full fed it retires into its case, in which it 

 changes to a curved pupa. {Fig. 47. 9. represents Clythra triden- 

 tata $ (longimana Fab.), lO. antenna, li. larva in its case, and 12. larva, 

 taken out of its case, from Fuessly.) Olivier, in his Hist. Nat. 

 CoUopteres, had first noticed that the larvae in these two genera 

 enclose themselves in a case, supposed to be formed of earth, in which 

 they reside, and which they carry about with them. Fuessly, Hubner, 

 Latreille, Wandouer, and L. Dufour [Ann. Gen. des Sciences, Bruxelles, 

 t. vi. p. 307.), had subsequently published notices upon the same 

 subject. M. Gene [Annal. Scienc. Nat. torn, xx. p. 143.) has published 

 a " Memoire pour servir a I'Histoire Naturelle des Cryptocephales et 

 des Clythres." In the spring of 1827, he discovered several of these 

 cased larvae on the trunk of an oak, and which were transformed, on 

 the 15th of the following June, to Cryptocephalus 12-punctatus i^a/[»r. 

 The head of the larvae exactly fits the orifice of the case; the antennae 

 are short, and 3-jointed; the mandibles triangular and bifid at the tip; 

 the legs are very long and slender. M. Gene discovered the re- 

 markable fact, that the case is formed of the excrement of the animal, 

 moulded to its proper form by the assistance of its mandibles. 

 {Fig. 4'7. 13. represents Cryptocephalus sericeus $ , and 47. 14. its 

 supposed larva, in a case after Fuessly.) In the Annales de la Soc. 

 Entomol. de France (tom. ii. p. 39.) is a notice of a larva, found by 

 Messrs. Thion and Percheron, enclosed in a solid case in an ant's nest, 

 and which was considered to be that of a Cryptocephalus. Zschorn 

 also reared C. 12-punctatus from a cased larva found on the hazel nut. 

 {Germar. Mag. vol. i.) 



Dr. Burmeister has published an interesting account of the natural 

 history of the curious South American genus Chlamys, in the second 

 volume of Wiegmann's Arcliiv. (p. 245. pi. 5.). The case, or cocoon, 

 in which the larva of Chi. monstrosa {fig- 47. i5.), discovered by M. 

 Bescke, is somewhat heart-shaped, the sides at the broad part being 

 extended into acute angles.' It was found at the foot of a balsam, at- 

 tached to a twig ; the larva [Jig. 47. 16.) has verj^ much the appearance 

 of that of a Melolontha, being thick, fleshy, wrinkled, and curved, 

 with six moderate-sized legs, two very short antennae, six tubercular 

 eyes on each side, and short triangular mandibles. The pupa state 



