Fig. 36. Sixth segment of adult _Papilio_-larvæ; A, _P. Hospiton_,
Corsica; B, _P. Alexanor_, South France; C, _P. Machaon_, Germany; D,
_P. Zolicaon_, California.
Figs. 37-44. Development of the markings of _Deilephila Euphorbiæ_.
Fig. 37. Stage I.; young caterpillar shortly after emergence. Natural
length, 5 millim.
Fig. 38. Similar to the last, more strongly magnified. Natural length,
4 millim.
Fig. 39. Stage II.; larva immediately after first moult. The row of
spots distinctly connected by a light stripe (residue of the subdorsal
line). Natural length, 17 millim.
Fig. 40. Stage III.; after second moult; magnified drawing of the last
five segments. Only one row of large white spots on a black ground
(ring-spots); subdorsal completely vanished; the shagreen-dots formerly
absent now appear in vertical rows interrupted only by the ring-spots.
Below the latter are some enlarged shagreen-dots which subsequently
become the second ring-spots. Natural length of the entire caterpillar,
21 millim.
Fig. 41. Stage IV.; the same larva after the third moult.
Transformation of the ground-colour from green to black, owing to the
spread of the black patches proceeding from the ring-spots in Fig. 40
in such a manner as to leave between them only a narrow green triangle.
The shagreen dots below the ring-spots have increased in size, but have
not yet coalesced.
Fig. 42. Stage III.; larva, same age as Fig. 40, but with _two rows_ of
ring-spots. Natural length of the whole caterpillar, 32 millim.
Fig. 43. Stage V.; larva from Kaiserstuhl. Variety with only one row of
ring-spots, and with red nuclei in the mirror-spots. Natural length, 5
centim.
Fig. 44. Stage V.; larva from Kaiserstuhl (like the three preceding).
The green triangles on the posterior edges of the segments in Fig. 42
have become changed into red. Natural length, 7.5 centim.
Fig. 45. _Deilephila Galii_; Stage IV. Subdorsal with open ring-spots.
Natural length, 3.4 centim.
Fig. 46. _D. Galii_; adult larva; Stage V. Brown variety with feeble
shagreening; subdorsal completely vanished. Natural length, 6 centim.