ANOPLURORUM BRITANNIA. 217 



pitchy trapezoidal spot ; occiput concave ; prothorax trans- 

 versely quadrate, wider before than behind, with a depressed 

 line across the front ; mesothorax very short ; metathorax 

 transverse, as wide as the head, posterior angles produced, 

 base rotundate ; abdomen large oval, pale fulvous, banded 

 with chestnut, the bands much darker on the sides, some- 

 times pitchy ; legs slender, pale chestnut. Length f . 



This species, which is very variable in colour, I have found 

 on the Osprey (Pandion haliseetus), from which bird I have 

 also received specimens taken in Northumberland, by Mr. 

 Selby, and from Norfolk by my brother.* 



SUB-GENUS II. MENOPON. (Nitzsch.). 



SUB-GENERIC CHARACTER. 



Head broad, semi-lunar or trapezoidal ; temporal portion 

 not separated from the clypeus by a deep sinuosity of the 

 lateral margin ; antennae shorter than the head, clavate, 

 generally obscure ; mesothorax small, scarcely visible or 

 frequently absent ; abdomen of ten segments. 



* Abdomen elongate. 



1. MENOPON PALLIDUM. (Louse of the Domestic Fowl.) 



Plate XXI. Fig. 5. 



Elongat e, pale straw-colour, shining and smooth ; head 

 slightly sinuated on each side with pitchy spots. 



* Dr. Burmeister enumerates three other species which are most probably 

 natives of Britain, which, however, have not come under my cognizance. 

 These are viz. 



1. C. insequale: luteo-testaceum, abdomine fasciis fuscis in femina bis in- 



terruptis ; mesonoto fascia Integra. Long. . Hab. Picus Martius. 



2. C. trochioxum : rufo-testaceum, capitis signatura nigra, utrinque inter- 



rupta ; fasciis abdominalibus obsoletis. Long. If. Hab. Ardea stellaris. 



3. C. umbrinum : dilute fuscum, capite segmentisque abdominalibus pallide 



punctatis, in ipsis punctis setigeris. Long. 1. Hab. Tringa subarquata. 



