218 



Transactions. 



Jays, after which the larva lays up for a week or more before the final 

 moult ; it is likely that the larva hibernates in this fashion. The silk is at 

 first a very pale green, but in almost every case quickly becomes a dark 

 brown. Some cocoons may be lighter in colour than others, and a few 

 remain pale green throughout. The shape is somewhat more quadrilateral 

 than ovoid, the length being about one and a half times the width at the 

 middle ; the ends are rounded, and the anterior end is considerablv wider 

 than its nadir, and possesses two flattened closely-applied lips which extend 

 the full width of the cocoon. The cocoon is somewhat flattened above 

 and below. The texture is very close, firm, and strong, the silk being so 

 woven as to form a thin skin-like fabric without any pores or openings 

 even when viewed under the microscope. The exterior of the cocoon is 

 provided with a small amount of loose floccy silk, but this is not very 

 noticeable. Average length, 3 mm. to 4 mm. There is no separate inner 

 lining. 



The Pupa. 



Ventral view : Front bluntly rounded, in female somewhat pointed. 

 Terminal segment in male somewhat quadrilateral in shape, slightly broader 

 than long ; in the female is bluntly rounded, about twice as broad as long, 

 and fairly deeply notched anteriorly by the genital opening. Eye about 

 two-thirds covered by the basal joint of the antenna and maxillary palpus. 

 Maxillary palpus well developed and stretching transversely between the 

 antenna and the labrum. Labial palpi slightly longer than the maxillae. 



Fig. 14. — Ventral view. 



Pupa of N. fulrit. 

 Fig. 15. — Lateral view. 



w 



Fig. 16. — Dorsal view. 



Maxilla broad above, abuts against the labrum, maxillary palpus, and femur 

 of the first leg ; sharply pointed caudad. First legs fairly stout, of almost 

 even diameter throughout ; extend from the maxillary palpi to slightly 

 below the caudal extremities of the second coxae in the male, but falling 

 slightly short of this in the female. Only a very small slip of the first 

 femur appears medially at the uppermost extremity. Second legs extend 

 from a narrow pointed cephalic extremity a little below the lateral 

 extremity of the maxillary palpi to about half-way between the caudal 

 extremities of the first and third legs ; somewhat expanded opposite the 

 second coxae ; the tibiae of 3 appear from beneath their caudal extremities 



