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Pho Pop cL yr’ 
SPHINX TIPULIFORMIS. 
Currant Spuinx. 
ret 
Larva, Pupa, and Spuinx of the Natural Size. 
The female of this {pecies depofits her eggs in the crevices of the 
fmaller branches and twigs ofbufhes. A peculiar inftin@ almoft inva- 
Mably direéts her to the ftalks of the currant tree, which are not only 
fafily penetrated but afford the moft grateful nourifhment to the young 
Tood, Immediately that the larva is enlarged from the egg, it perfo- 
Tates the flalk; and having entire poffeflion by this means of the inner 
Channel, feeds on the pith, or medullary-fubftance, which is abundant 
in the flalks of this particular plant. Thus befides obtaining food in 
Plenty, it is fecured from the attacks of many depredators, to which 
ll larvae or caterpillars are expofed, with the exception of internal 
feeders, 
It changes to the pupa ftate in the hollow or cavity it has form. 
®d within the ftem. 
A fhort time before the infe@t burfts forth, the pupa or chryfalis is 
Protruded through the outer bark, precifely in the fame manner as 
the Pupa of Sphinx Apiformis, (Plate 25), and is fupported by a fimi- 
*T contrivance, every fegment being ferrated, or armed, with a row 
3 Very minute teeth, which firmly embrace the fubftance of the flalk, 
And elevate the Chryfalis in an oblique pofture ; until the laf efforts of 
© Infeg completely difengages it from the cafe. — 
G 2 Sphinx 
