156 MONOGRAPHIA 



first joint, with a large tooth on the internal edge, second 

 cylindrical apex oblique, third long and recurved, fourth 

 and fifth very small, in the female filiform ; prothorax 

 narrower than the head, conical ; metathorax nearly twice 

 the width, convex lateral margin rounded, posterior pro- 

 duced and acuminate ; abdomen large, nearly orbicular in 

 the male, obtusely ovate in the female, pale, tawny-yellow, 

 with transversely oblique tongue-shaped lateral fasciae of a 

 deep liver-colour, stigmatic orifices pale, last segment bright 

 chestnut ; legs pale, ferruginous yellow ; femora thick, tibiae 

 armed on the inferior edge, with several stiff spines. 

 Length g 1 $ 2. 



This beautiful parasite is common upon the Peacock 

 (Pavo cristatus), and may be found after the death of the 

 bird congregated in numbers about the base of the beak, 

 and crown of the head. The female has the head larger 

 than the male, more rotundate, the temporal fossae less 

 distinct, the abdomen elongate ovate, with the lateral fasciae 

 deeper coloured, broader and confluent. The insect figured 

 at No. 3, I have also found in tolerable plenty upon the 

 Peacock, and supposed it was a distinct species, and as 

 such I figured it, but upon referring to Dr. Burmeister, 

 he states it to be only the young of the G. Chelicornis, and 

 as such, therefore, I now give it, proving that these insects 

 alter their form or change their appearance during the 

 period of casting their skins more than has been generally 

 believed. The antennae of the male especially (fig. e.) 

 differs considerably from that of the adult (fig. c.). 



2. GONIODES STYLIFER. (Louse of the Turkey) 



Plate XII. Fig. 2. 

 Bright chestnut-yellow, and shining, external occipital 



