LEPIDOPTERA.- 



127 



CHILOGNATHIFORM 



OR 



lULIFORM STIRPS. 



Character. 



Larva elongata ; nunc cjjlindrica ; nunc utrinqite (equaliter angustata vel medium versus 

 incrassata, convexa, dorso arcuata, antice conico-attenuata : superficie modb glabra, 

 omnino Icevis, vel antice clypeo maximo e summo dorso ad caput usque operta ; modb 

 arete punctulata vel pilosa vel hirsuta vel appendiculis carnosis munita : caput globo- 

 sum retractile corpori mediante articulo brevi junctum, exsertum subsolutum : furcula 

 retractilis inter caput collumque media, perfections structures indicium, in generibus 

 stirpi vermiformi accedentibus haud obvia. (Larva, quoad habitum Iulo similis.) 



Pupa nuda angulata, quoad formam valde variabilis, tuberculis seriatis numero ac 

 magniludine diversis ornata ; antice modb acumine simpUci terminata, modb bifida ; 

 postice attenuata, fukro adnexa ; mediantibus jilis collum abdomenque ligantibus 

 verticaliter vel oblique suspensa, capite sursum spectante. 



Observation. — The larva of this stirps is in all the various forms in which it appears, of great 

 proportional length. Near the confines of the Vermiform stirps it is slightly attenuated at both 

 ends, marked with distinct transverse stria at the segments and covered with minute elevated dots. 

 This character it possesses in Colias (see PI. iv. No. 6 and 7) and in Gonepteryx as figured by 

 Roesel (vol. iv. Tab. xxvi. 1. 2. 3.). In the division which follows in natural order, the larva is 

 regularly cylindrical, slender and closely covered with down or hairs : it exhibits this form in 

 Terias (see PI. iv. No. 8), Pontia (PI. iv. No. 9) and the allied genus Leucophasia. We have next, 

 in the Javanese series, a larva, slightly attenuated at both ends and gradually approaching the 

 character of the following group; it is figured on our PI. iv. No. 10, and the species agreeing with 

 it, constitute the genus Pieris as applied in this catalogue. The group which succeeds to it and 

 v/bich appears to be peculiar to northern regions, has an intermediate character, while it is at 

 the same time, quite anomalous in its pupa state. The principal genus in this group is Doritis .- 



the 



