464 



Transactions. 



object, though so very striking when seen in picked leaves. Old mines 

 become white, but otherwise do not discolour the leaf ; they are con- 

 sequently far more conspicuous objects than the fresh ones. The mine is 

 slightly deeper in the leaf than that of P. panacifinens. The total length 

 of the mine may reach to 12 in. or 16 in. Frass is very finely granular; 



^'^^^^^^'- - The Cocoon. 



The cocoon is a somewhat cylindrical structure of thin white silk, with 



all the characteristics of P. panacifinens. It is within the mine in the 



upper part of the leaf, and is protected by a somewhat thicker covering 



than the rest of the mine. It is slightly elevated, and as a rule causes a 



local pinching of the leaf. It is invariably foimd alongside the midrib in 



the basal third of the leaf. Size, 7 mm. by 2 mm. Its small white window 



is quite conspicuous at the head end of the structure ; it is fan-shaped, with 



its broadest part upon the surface of the leaf. Old cocoons soon become 



discoloured brown. ^7 t. 



Ihe Pupa. 



The pupa of this moth is practically identical with that of P. panaci- 

 finens ; on the average it may be slightly smaller ; its lateral cornua 

 are relatively more developed, and are about one-half the length of the 

 cephalic plate. The arrangement of the setae is the same in both, but in 

 aellomacha the dorsal setae are short and fine, the dorso-lateral ones rather 

 stout and long. The following measurements were taken from a typical 



specimen : — - 



Chief Measurements of Pupa. 



Dehiscence. 

 This takes place on the upper surface of the leaf, and is identical with 

 that of P. panacifinens. 



(8.) Parectopa panacivagans n. sp. (The Lancewood Parectopa). 



(Plate XXX, fig. 10.) 



The Imago. 



8 mm. Head white at the sides, black above and against thorax ; palpi 

 white with two black rings ; antennae black suffused with white below 

 and towards base. Thorax white, black against tlie head, and caudally 

 a small black V-shaped mark ; legs white with black rings. Abdomen 

 blackish grey, Forewings black, slightly irrorated with white ; markings 

 white ; from base to ^ white with a small central spot of black ; a short 

 narrow outwardly-oblique line of white on costa at ^, another slightly 

 larger and triangular spot a little beyond | reaching half across wing ; a 

 short narrow oblique line of white at | ; an indistinct inwardly-curved 



