Life Histories in tlic Hcincdid Group of Lcpidoptcra. 413 



the abdomiual feet (prolegs). The tubercles of ninth 

 abdominal segment are six in number (viewed laterally), 

 namely one anterior dorsal, and five on the posterior 

 Q'\^e. of the segment, arranged one below another, all 

 have only one seta. The anal segment has five set^e 

 viewed laterally, but in all ten arranged thus : six above 

 the anal fold, and four below it. Viewed ventrally, at the 

 base of each thoracic leg there is a small hair, and on the 

 inner side of the abdominal feet a corresponding hair, the 

 latter (abdominal feet) are terminated by (apparently) a 

 single row of weak hooks. 



The tubercle seta* are apparently quite smooth. 



Larva 51 days old. 



Very slender in proportion to length, which is § inch. 

 Pale brown head, dark prothoracic dorsum, pale cream 

 segmental area. Tlie dorsum of prothorax is covered by 

 scutellum, which extends to about the middle of the 

 lateral area. Viewed laterally there is an anterior marginal 

 series of hairs on scutellum, four equidistant and a closer 

 fifth ; a second transverse series is central with three 

 equidistant and a fourth inner hair, the basal area of 

 tliese is not enlarged. Spiracle is large, transverse, pos- 

 terior ; below the spiracle is a large anterior tubercle 

 bearing two remote seta3. The pro-meso intersegmental 

 membrane has three single subdorsal hairs. Meso-thorax 

 has anterior trapezoidal tubercles coalesced dorsally, and 

 a posterior dorso-lateral plate enclosing the posterior 

 trapezoidal and three lateral tubercles, which form a 

 marginal series resembling that of the prothoracic scu- 

 tellum ; anterior is a small lateral tubercle with one hair, 

 a lower posterior tubercle with one seta, and a large 

 tubercle with one seta, above the legs. The meso-meta 

 intersegmental membrane has three subdorsal hairs. Meta- 

 thorax has the ante-trapezoidal tubercles separate at the 

 median line, but they are elongate laterally, the post- 

 trapezoidal is normal in position but rather large. Supra- 

 spiracular tubercle very large with two setie, a small 

 anterior lateral tubercle with one hair; a lower tubercle 

 with one seta, a posterior tubercle, and one above the leg, 

 each with one seta. 



The abdominal segments have tubercles corresponding 

 with those of the newly hatched larva except on the first 

 abdominal; the subspiracular tubercles are coalesced; on 



