89 



the stoutness in proportion ; the head black, and the body vel- 

 vety-black, bearing two orange dots on the front margin of the 

 second segment, the shining, rather pointed, black tubercles hav- 

 ing their bases reddish-ochreous, after being for a day or so green ; 

 the white patch as before, but now bearing black tips on the 

 tubercles. 



After the second moult the length by the third day has in- 

 creased to 14 mm., with increase of stoutness; the black shining 

 head is marked on the face with a yellow chevron, and with pale 

 yellow upper lip and bases of papilla; ; the black velvety body 

 has the white patch yet more conspicuous and encroaching a trifle 

 on the ninth segment ; the front dorsal margin of the second 

 segment is marked with orange-yellow, and minute twin dorsal 

 bright yellow dots are on the third and fourth, and a faint narrow 

 transverse divisional streak of yellowish or grayish between them ; 

 other similar short streaks occur on the ninth and tenth. Of the 

 three rows of conical black tubercles on each side of the body, 

 the two top rows have their upper bases half ringed with bright 

 orange color (excepting those on the white patch, which have pale 

 yellow), the lower third row have orange bases like slanting 

 slashes ; the anterior legs are whitish, tipped and spotted above 

 with black, each ventral leg with a white crescentic mark above 

 the foot ; and there is some white on the anal flap. 



After the third moult, in two or three days the length is 22 

 mm. and the thickness in proportion ; the design, now more de- 

 veloped, shows the head yellow marked with black, and when 

 protruded the horns colored orange-red, the ground color is of 

 the palest greenish-yellow, though it is still white on the seventh 

 and eighth segments, but showing only in transverse rings a 

 little wider than the very narrow greenish-yellow ones round 

 the others, for the middle of each segment is transversely banded 

 with velvety black, but narrower on those two with white 

 ground ; the segmental divisions are grayish-black ; the black 

 velvety bands are intersected with three lines of the ground- 

 color bearing the orange tubercles with black bristly apices ex- 

 cept on the thoracic segments, where the black bands are broad- 

 est and only broken below, as on them the upper tubercles are 

 completely surrounded with black ; all the legs are white, marked 

 with black. 



After the fourth moult the length in two days is 31 mm., and 

 in five more days is 46 mm. and very stout, its size and beauty of 

 coloring being now at their greatest; the thoracic segments swell 

 upwards in a rounded arch from the fourth, which is the largest, 

 and viewed from above sharply taper thence to the head, which 

 is the smallest, and bends downwards ; the color of the head is 

 bright yellow with a black oval spot on the face and two black 

 streaks down either side, the ocelli in a black patch below, the 

 mouth marked with black in the centre and on each side ; papillae 



