I. TRÄGÅRDH, LEPIDOPTEROUS LEAF-MINERS. 47 



At the apex of the submentum there is a blunt, triangulär 

 plate, almost as long as it is wide at the base; near its apex 

 the wide salivary duct opens. It is doubtful whether this it 

 the spinneret or mentum, or both fused. 



No labial palpi are discernible, but at the side of the 

 spinning apparatus there is a pair of rounded areas on which 

 two papillae and one hair are inserted; these areas I interpret 

 as the remnant of maxillary palpi. 



The mandibles appear to be quite atrophied, although it 

 is possible that, by dissecting the mouth-parts, remnants of 

 them cculd be traced. 



Bibliography, 



De Geer, Charles. Mémoires pour servir å 1'Histoire des In- 

 sectes. Stockholm 1752—78. 



Réaumur, R. A. F. Mémoires pour servir å 1'Histoire des Insectes. 

 Paris 1734—42. 



Stainton, H. T. Natural History of the Tineina. 



Chambers, V. T. Notes upon the American species of Litlwcol- 

 letis. — Psyche, vol. 2. Cambridge 1877, 78. 



— — . Notes upon some Tineid larvse, ibidem, vol. 3. 1880. 



Dimmock, G. The trophi and their chitinous supports in Gra- 

 cilaria. — Ibidem, vol. 3. 1880. 



Tutt, I. W. A natural History of the British Lepidoptera. 

 Vol. 1. London & Berlin 1899. 



Sich, A. Observations on the early stages of Phyllocnistis suffu- 

 sella Zell. — Träns, of the City of London Entomological 

 and Natural History Society. Part. XII. 1992. — London 

 1903. 

 9. — — . Aid to the Study of Lepidopterous leaf-miners. — Ibidem 

 part. XIV. 1904. — London 1905. 



10. — — . Larval stages of Chrysopora hermanella Fab. — The 



South London Entomological & Natural History Society. 

 London 1910—1911. 



11. Chapman, Th. A. Some Notes on the Microlepidoptera wliose 



larvse are external feeders. — Träns. Eutomol. Soc. London 

 1894. 



12. — — . The classification of Gracilaria and allied genera. — 



The entomologist. 1902, vol. 35. No. 467. 



13. Fulmek, L. Z. Kenntnis Schädlicher Schmetterlingsraupen. 3. 



Bie Raupe d. Fliederminiermotte, Gracilaria syringella F. — 

 Sonderabdr. d. Zeitschr. f. d. landwirtschaftliche Versuchs- 

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