AGLOSSA PINGUINALIS. 33 



them ; however, at the end of April there still re- 

 mained two alive, and from them, and also from other 

 examples captured when mature, I made the following 

 description. 



The full-grown larva is from 25 to 29 mm. in 

 length, almost uniformly cylindrical throughout, 

 though rather stoutest at the third and fourth seg- 

 ments, which have deeply subdividing wrinkles, and 

 on each of the following segments to the twelfth is 

 one deep transverse wrinkle a little beyond the middle ; 

 sometimes faint indications of one or two more occur 

 near the end without detracting from the general 

 plumpness of outline; the segmental divisions are 

 well cut, the anal flap plumply rounded off behind ; 

 the tumid ridge below the spiracles is very prominent, 

 the belly flattened and deeply wrinkled; the dorsal 

 tubercular dots, each with a fine hair, are arranged 

 rather in a square than a trapezoidal figure ; the spi- 

 racles are very flat, situated just below each lateral 

 wart, where the skin is very plump, and in no way 

 hidden or protected by any wrinkle or fold ; the colour 

 is generally black or blackish-brown, sometimes a little 

 bronzy, the head having a pale bar of greyish-drab 

 across the upper lip, the papillae of the same pale 

 colour, all the legs drab ; the belly appears like rather 

 worn bronze; the spiracles are black like the skin 

 around them, and therefore are rather difficult to 

 discern. 



The pupa is about 13 mm. in length, and nothing 

 unusual in form ; the moveable segments of the abdo- 

 men are deeply cut, and furnished at the tip with four 

 fine curly-topped spines ; its colour is of a dark brick- 

 red, and with a dull surface, though in the divisions 

 of the moveable rings it glistens a little. 



The cocoon, firmly attached to some solid surface, 

 is of broad- oval form, composed of greyish silk, on 

 which the spines of the pupal tail obtain a firm hold ; 

 it is covered externally with particles gnawed from 

 the surface of its surroundings, whether of rubbish, or 



VOL. ix. 3 



