394 GEORGE H. CARPENTER AND MABEL C. MACDOWELL. 
least, a primitive order of the Eudopterygota. And the 
persistence of the maxillulse in these larvse tells us not only 
that the campodeiform type is venerable in the history of 
insect transformation, but, further, that in the hard-cuticled 
beetle-grub, with its likeness to a bristle-tail or a woodlouse, 
we have at least some hint as to the phytogeny of the higher 
orders of wiuged insects as a whole. 
References. 
? 96. Boas, J. E. Y. — 4 *En Mosekulturfjende,” 4 Tidskrift for Land- 
brugets Planteavl,’ vol. iii, 1896, pp. 155-160. 
'69. Brauer, F. — “Betrachtung liber die Verwandlung der Insekten,” 
4 Verliandl. Zool.-Bot. Gesellsch. Wien,’ vol. xix, 1869. 
’03. Carpenter, G. H. — “ On the Relationship between the Classes of the 
Arthropoda,” 4 Proc. R. Irish Acad.,’ vol. xxiv b, 1903, pp. 320-360. 
’09. “Injurious Insects and other Animals observed in Ireland 
during the year 1908,” 4 Econ. Proc. R. Dub. Soc.,’ vol. i, 1909, 
pp. 589-612. 
’41. Ericlison, W. F. — 44 Zur systematischen Kenntniss der Insecten- 
larven,” 4 Wiegemann’s Arcliiv.,’ vol. vii, 1811, pp. 60-110. 
’99. Folsom, J. W. — 44 The Anatomy and Physiology of the Moutli-parts 
of the Collembolan Orcliesella cincta,” ‘Bull. Mus. Comp. 
Anat. Harvard,’ vol. xxxv, 1899, pp. 7-40, pis. 1-4. 
’08. Galian, C. J. — 44 On the Larvse of Trictenotoma cliildreni, 
Gray, Melittomma insulare, Fairmaire, and Dascillus 
cervinus, Linn.,” 4 Trans. Entom. Soc. Lond.,’ 1908, pp. 275-282. 
’93. Hansen, H. J. — 44 Zur Morphologie der Gliedmassen und Mund- 
tlieile bei Crustaeceen und Insecten,” 4 Zool. Anz.,’ vol. xvi, 1893, 
pp. 193-8, 201-12. 
’77. Huxley, T. H. — 4 A Manual of the Anatomy of Invertebrated 
Animals,’ London, 1877 (p. 403). 
’91. Rivers, J. J.— “Description of the Larva of Dascyllus D avid- 
son ii Lee., and a Record of its Life-History,” ‘Proc. California 
Acad. Sci.’ (2), vol. iii, 1890-2, pp. 93-96, pi. ii. 
’74. Rolph, W. — “Beitrag zur Kenntniss einiger Insektenlarven,” 
‘Arcliiv. fur Naturgeschiclite,’ xiv, 1, 1873, pp. 1-40, pi. i. 
’73. Schiodte, J. C. — “De Metamorphosi Eleutheratorum Observa- 
tiones,” Pars VII, 44 Stenini, Taehyporini, Homalini,” 4 N aturhist. 
Tidsskrift,’ vol. viii, pp. 545-564, pis. xviii-xx. 
’74. 44 De Metamorphosi Eleutheratorum Observationes,” Pars 
VIII, 44 Scarabsei,” ‘Naturhist. Tidsskrift,’ vol ix, pp. 227-376, 
pis. viii-xix. 
