48 CLASSIFICATION OF INSECTS. 



out by Brauer/ Packard," and Lubbock/^ the general 

 prevalence of a form similar to that of this genus, or 

 its aUies, in the larvae of eleven out of the sixteen 

 orders of insects, cannot be accounted for on any 

 other hypothesis.'' 



1 VerhandL d. zool. hot. GeseL, 1869, Vol. XIX., p. 299. 



^ Packard sustains this view in his Embryological Studies. 

 Me?noirs of Peabody Acad. Sci., Vol. I., No. 2, Salem, Mass., and 

 in Our Conunoii Insects, Chaps. XII. and XIIL, especially p. 

 154. The last is a popular and highly instructive account of the 

 problem, showing not only the relations to Thysanura in more 

 detail than above, but also the common type exhibited by the 

 six-legged young of the Myriopods and some members of this 

 order, thus carrying back the origin of insects to the same com- 

 mon type with the Centipedes and Millepedes. 



3 Origiii and MetamorpJioses of Insects. 



* Teachers wishing for information on the subject of the an- 

 cestry of insects and the more specific characters of the Thysa- 

 nura will be helped by the following bibliography : — 

 MULLER, F. Fiir Darwin, Eng. trans., pp. 119-121. 

 Brauer, F. " Betrachtungen Uber die Verwandlung der Insek- 

 ten im Sinne der Descendenz-Theorie." Verhandlungen 

 Zoologisch-botanischen Gesellschaft, Wien, Vol. XIX., 1869. 

 Packard, A. S. Amer. N'at., Vol. III., March, 1869. 



Proc. Bast. Soc. Nat. Hist., Nov., 1870. 



A??ier. Nat., Feb., 1 87 1. 



Amer. Nat., Vol. V., March and Sept., 1 871. 



Embryological Studies, Peabody Acad. Sci., Salem, 1871-72. 



Our Co77imon Insects, 1873, Chaps. XII., XIII. 



" Scolopendrella and its Position in Nature," Amer. N'at., 



Sept., 1 881. 



Third Rep. U. S. Ent. Com., 1883, p. 295. 



Lubbock. "Notes on the Thysanura." Trans. Linn. Soc, 

 Vols. XXIIL, XXVI., XXVIL, 1862, 1870, 1871. 



"On Pauropus, a New Type of Centipede." Trans. Linn. 



Soc, Vol. XXVI., 1870. 



