Notes in 1887 upon lepidopterous larve, dc. 567 
Resemblances.— 
ti 
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Caudal horn : Changes of size during growth ; 2 ter- 
minal bristles ; bifurcation; longest and moveable 
in early stages; colour and white zone; thorn-like 
processes. 
. Oblique stripes: as in Sesia. 
. Subspiracular : as in Sesia, Macroglossa &c. 
. White thoracic lines: as in Sphina ligustri, &c. 
. The appearance and arrangement of the chief 
tubercles. 
. Shape of head: asin young Sphinx and Smerinthus, 
and adults of many other genera. 
7. Sphinx-like attitude; and also the fact that it is 
13. 
14. 
15. 
chiefly marked in young larve. 
. Position on leaves and twigs of food-plant, at different 
times in larval life. 
. Shagreen dots, with bristles, and the times at which 
they appear and persist (Smerinthus, Sphinx). 
. Individual differencesin shade of ground colour: asin 
Smerinthus. 
. Distribution of shades of ground colour: as in 
Smerinthus, Acherontia, Sphinx. 
. Probable slight susceptibility of larval tints to 
surrounding colours (Smerinthus, Sphinx). 
The colours of the spiracles in the last stage: (Sphinx). 
Change of colour before pupation: (Smerinthus). 
The shape and texture of the pupa: (Smerinthus 
popult). 
Nearly all these points of resemblance are very 
striking, and appear to prove that the larve have the 
closest affinity to the Sphingide, and especially to the 
genus Smerinthus. 
Peculiarities and apparent differences.— 
iE; 
. Expansion of spines immediately after hatching. 
. The presence of four thoracic spines and the anal 
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Ova: very different colour. 
spine. 
. Absence (?) of subdorsal line. 
. The length of the first stage. 
. The ridges on abdominal segments. 
. The terrifying mark: position and concealment 
during rest ; but origin much as in Cherocampa. 
. Loss of caudal horn in last stage; but certain 
Sphingide also lose the horn. 
. Only four stages in Ontogeny. 
