ANOPLURORUM BRITANNIA. 89 



black ; abdomen large, obtusely ovate, pale yellow, white 

 and hairy, the first segment angular and well defined, 

 lateral fascise and terminal segment pitchy black, the first 

 three with a bright chestnut humeral patch ; legs thick, pale 

 yellow. Length 1. 



Although this very beautiful species is a common Para- 

 site on the Curlew (Numenius arquata), from which bird I 

 first received it through Mr. Thompson of Belfast, I have 

 also found it upon the Gannet, Whimbrel, and Foolish 

 Guillemot, though sparingly. Varieties are observed in 

 which the lateral fasciee were very narrow, leaving a broad 

 sutural band of white, and others in which they were of a 

 bright chestnut. 



33. DOCOPHORUS LABI. (Louse of the Gull.) 



Plate V. Fig. 9. 



Bright chestnut, smooth and shining ; abdominal fasciae 

 pitchy black and confluent. 



Pediculus Lari ? Fabr. Faun. Green, p. 219. no. 189 ? 



Head elongate, triangular, clypeus broad, nearly emar- 

 ginate, pale ochraceous, two semicircular impressed lines 

 uniting in the centre, and two transverse deep pitchy bands, 

 base rotundate ; eyes obscure ; trabeculae conical and strong; 

 antennae chestnut ; prothorax transverse, channelled ; meta- 

 thorax not so wide as the head, triangular, with a depression 

 at the base; abdomen ovate, dull yellow white, the first 

 and last two segments, with the lateral fascia on the re- 

 mainder, deep pitchy black, the latter long and conical, 

 with two deep fovea, anterior sutures angular and pro- 

 duced, posterior sinuated ; legs dark chestnut ; extremity 

 of the femora with a dark ring. Length f . 



This species appears common to nearly all our Gulls. 



