ANOPLURORUM BRITANNIJE. 209 



fourth very large, apex obliquely truncate; prothorax small, 

 transversely elliptical, with a cruciform depression in the 

 centre, and a line on each side ; mesothorax not visible ; 

 metathorax large, as wide as the head, depressed in the 

 centre ; abdomen rather broad, sub-truncate, fulvous yel- 

 low, segments nearly equal, sutures pale, lateral margin 

 pitchy, the first and last two segments dark chestnut; legs 

 pale brown, superior margin of the femora and tibiae dark ; 

 femora of the second and third pairs of legs notched near the 

 apex; tibiae very abruptly clavate ; tarsi long and thick. 

 Length ^. 



The only specimens of this species which I have seen I 

 received from J. R. Wallace, Esq. of Douglas, Isle of Man, 

 who took them from the Cornish Chough (Fregilus gracu- 

 lus) . It resembles the preceding species in many respects, 

 but when the two insects are in juxta- position, the specific 

 identity of each is very evident. I possess specimens re- 

 sembling this species in general appearance, but smaller, 

 said to be from the Coot ( Fulica atra) . These I preferred 

 leaving in terra incognita, until I am better convinced of 

 their locality. 



3. COLPOCEPHALUM TURBiNATUM. Denny. (Louse of 

 the Pigeon.) 



Plate XXI. Fig. 1. 



Chestnut, shining ; head broad, with two dark orbital 

 spots extending to the base ; metathorax wide ; abdomen 

 turbinate, the first segment very large. 



Head bright, chestnut-yellow, with two deep brown spots 

 on the anterior margin, two black orbital patches, and a 

 transverse sinuated band at the base, connected by a deep 

 chestnut fascia on each side ; antennae fulvous, short; eyes 

 prominent and black ; prothorax nearly as wide as the 



