66 THE FERTILISATION OF FLOWERS. [PART II. 
proboscis are figured and described by M. Kunkel,! Francis Darwin,? 
Reginald Bligh Read,* and W. Breitenbach. My brother Fritz 
Miiller thinks that some of the appendages of the proboscis in 
Lepidoptera may be organs of touch or taste. These, which differ 
much in number, size, and form in different species, are usually 
somewhat movable, and bear at their tips a delicate rod, re- 
sembling the tactile rods or olfactory hairs of Crustacea, etc. 
Among the forms in which these have been noted are Prepona 
Laertes, Hesperocharis Erota, Colenis Julia, Apatura Hiibneri. 
Fic. 22,—Adaptive modifications in Lepidoptera. 
1.—Head of Polyommatus Phileas, L., with proboscis half unrolled. 
2.—Head of Vanessa Io, L., after both lamine of the maxille and the labial palps have been 
cut away at their bases (x 7). 
3. —Part of the lamina of Macroglossa fuciformis, L., seen from within ; more highly magnified. 
a, channel. 
“Transverse section of the apposed laminz of the same insect, equally magnified. aa, tube’ 
formed by apposition of the two channels. 
5.—Point of lamina of Vanessa Atalanta, L. 
Lettering in 2 as in Fig. 11. 
In regard to their length, the maxillary lamine of our Lepi- 
doptera show all degrees, from the proboscis of the Convolvulus 
Hawk-moth, 80 mm. long, to a proboscis scarcely a millimetre 
long. Their mouth-organs may be almost entirely abortive and 
only comparable to those of the Phryganide, pointing to these as 
1 Comptes Rendus, August 30, 1875. 
2 Q. J. Micros, Sci. vol, xv. N.S., pp. 885—890. 
3 Proc. Linn. Soc. N. S. Wales, August, 1878. 
4 Archiv. f. Mier. Anat. Bd. xiv. pp. 308—317. Breitenbach has since pub- 
lished some further studies on the boring apparatus of Lepidoptera (idbid., Bd. xv. 
pp. 8—19 ; Entomol, Nachrichten, September 15, 1879, and February 15, 1880). 
