214 



REFERENCES. 



1904. BORNER, C, Zur Systematik der Hexapodcn — Zool. Anz., xxvii., 



1904, pp. 511-33- 

 1869. Brauer, F., Betrachtung über die Verwandlung der Insekten — 



Verhandl. zool. -bot. Gesellsch. Wien, xix., 1869. 

 1912. Carpenter., G. H., and MacDowell, M. C, The Mouth-parts 



of some Beetle-larva^ — Quart. Journ. Micr. Sei., Ivii., 1912, 



PP- 373-96, pis. 35-37- 

 1900. FoLSOM, J. W., The Dsvelopment of the Mouth-parts of Anurida 



— Bull. Mus. Comp. Zool. Harvard, xxxiv, 1900, No. 5. 

 1893. Hansen, H. J., Zur Morphologie der Gliedmassen und Mundteile 



bei Crustaceen und Insecten — Zool. Anz., xvi., 1893, pp. 193-8, 



201-212. 

 191 2. Mangan, J., The Presence of Maxillulíc in Larvíu of Dytiscidae — ■ 



Manchester Memoirs, Ivi., 1912, No. xi. 

 1891. Rivers, J. J., Description of the Larva of Dascyllus Davidsonii 



Lee. and a Record of its Life-history — Proc. Calif. Acad. Sei. 



(2), iii., 1890-2, pp. 93-6, pi. 2. 

 1874. RoLPH, W., Beitrag zur Kenntniss einiger Insektenlarven — 



Archiv, f. Naturgeschichte, xl., i, 1874, pp. 1-40, pl. i. 

 1874. ScHiÖDTE, J. C, De Metamorphosi Eleutheratorum Observationes. 



Pars viii. Scarabaei — Naturhist. Tidsskr., viii. 

 1912. Scott, H., A Contribution to the Knowledge of the Fauna of 



Bromeliaceœ — Ann. Mag. Nat. Hist. (8), x., 191 2, pp. 424-38, 



pl. x. 



SUPPLEMENTARY NOTE ON THE POSSIBLE EXISTENCE 

 OF MAXILLUL^ IN SOME DIPTERAN LARVAE. 



In the paper by Carpenter and MacDowell (1912), referred to 

 above, the identification of the maxillulge is stated to be " the first 

 recognition, as we believe, of these interesting appendages in any 

 stage of an Endopterygote (metabolic) insect." My friend Mr. J. 

 Mangan has, however, since called my attention to the work of 

 Bengtsson on the larva of the tipuloid fly Phalacrocera, ^ in which 

 an " endolabium," bearing paired lobes homologised with the maxillulae 

 of Apterygota, is described and figured ; it is further stated that 

 this " endolabium " is innervated by a special nerve arising from 

 the front region of the sub-œsophageal ganglion. Bengtsson's 

 results have, however, been somewhat severely criticised by 



1 Acta Reg. Soc. Physiogr. Lund., viii., 1897, and Zool. Anz., xxix., 

 1905. PP- 457-76. 



