ANOPLURORUM BRITANNIA. 173 



Head chestnut, very long, and much depressed, with a 

 dark line extending down each side from the clypeus to the 

 temporal fossa, where it curves inwards ; the occiput with 

 two dark impressed lines, margin of the clypeus ciliated 

 with strong setae ; eyes prominent ; antennae pale, ferru- 

 ginous, the male with the first and second joints long and 

 cylindrical, the third acutely hooked, the fourth and fifth 

 short and minute, the female with the second joint much 

 the longest, the remainder short and equal; prothorax 

 small, rotundate, with two short lines in front ; metathorax 

 oblong, quadrangular depressed, with a long pitchy spot on 

 each side, and a slight furrow down the centre ; abdomen 

 dull white, oblong, somewhat claviform towards the apex, 

 with a row of trapezoidal fuscous spots down each side, 

 divided longitudinally by a pale fulvous line, lateral margin 

 black, last segment ferruginous, deeply emarginate ; legs 

 long, slender ; anterior femora very large and lobate, pale 

 fulvous. Length ^ 1 p 1J. 



I find this species very common on all varieties of Pigeons, 

 and living in society with Nirmus claviformis and Gonio- 

 cotes compar. Few birds indeed are so infested with pa- 

 rasites as the Columbid&i besides four species of lice I have 

 found a large Ixodes, a small Acarus, and the Pulex Co- 

 lumbce, and the Rev. L. Jenyns has detected a Bug, Cimex 

 Columbarius, described by him in the Annals of Natural 

 History, vol. v. page 242, which has also occurred in Dove- 

 cotes, near Leeds. 



9. LIPEURUS PELAGICUS. Denny. (Louse of the Stormy 



Petrel.) 



Plate XIV. Fig. 2. 



Elongate, depressed, bright chestnut ; head, thorax, and 

 abdomen with a dark pitchy margin. 



