Appendix. 523 



stages and adult forms of certain grape-vine feeding 

 larva: of the subfamily Cluerocampina. The full-grown 

 larva of Philampeliis Aclicmon, Drury, " measures about 

 3j inches when crawling, which operation is effected by 

 a series of sudden jerks. The third segment is the 

 largest, the second but half its size, and the first still 

 smaller, and when at rest the two last-mentioned 

 segments arc partly withdrawn into the third. . . . The 

 young larva is green, with a long slender reddish horn 

 rising from the eleventh segment and curving over the 

 back." Mr. Riley then states that full grown specimens 

 are sometimes found as green as the younger ones, but 

 " they more generally assume a pale straw or reddish- 

 brown colour, and the long recurved horn is invariably 

 replaced by a highly polished lenticular tubercle." The 

 specimen figured was the pale straw variety, this colour 

 deepening at the sides, and finally merging into a rich 

 brown. The markings appear to consist of an interrupted 

 brown dorsal line, a continuous subdorsal line of the 

 same colour, and six oblique scalloped white bars along 

 the side. Whether the colour and marking is adapted 

 to the vine, as is the case with the two varieties of the 

 dimorphic Cluzrocampa Capcnsis (g.v.), is not stated. 

 The larva of Phila nipdus Satellitia, Linn., when newly 

 hatched, and for some time afterwards is " green with a 

 .tinge of pink along the sides, and with an immensely 

 long straight pink horn at the tail. This horn soon begins 

 to shorten, and finally curls round like a dog's tail." The 

 colour of the insect changes to a reddish- brown as it grows 

 older, andthecaudal horn is entirelylost atthe third moult. 

 The chief markings appear to be five oblique cream-yellow 

 patches with a black annulation on segments 6 10, and 

 a pale subdorsal line. The caterpillar crawls by a 

 series of sudden jerks, and often flings its " head savagely 

 from side to side when alarmed." " When at rest, it 

 draws back the fore part of the body and retracts the 



