ANOPLURORUM BRITANNIA. 69 



to the occiput, anteriorly notched with a sub-lozenge- 

 shaped depression, lateral margin deeply sinuated before 

 the eyes; trabeculae thick and strong and conical, slightly 

 curved ; antennae pale tawny, slender ; eyes very prominent ; 

 prothorax transversely oval, deeply channelled ; metathorax 

 the width of the head, transverse, basal margin sub- an- 

 gular, fringed with hairs, lateral margin black ; abdomen 

 large, ovate, pale yellow-white, the lateral fasciae pitch 

 coloured, obtusely conical ; legs fuscous, very thick ; poste- 

 rior femora much incrassated, with an angular projection 

 beneath; tibiae clavate; ungues tawny. Length 1. 



The only example of this species which I have seen, 

 I found upon the skin of a Nutcracker (Nucifraga caryo- 

 catactes). 



7. DOCOPHORUS SUPERCILIOSUS. (Louse of the Great 

 Black and White Woodpecker.) 



Plate 111. Fig. 9. 



Bright chestnut ; head subtriangular, sinuated on the 

 sides ; lateral margin of the abdomen serrulated towards 

 the apex. 



Docophorus superciliosus. Burmeister Handbuch, ii. pt. ii. p. 4'27, sp. 23. 



Head bright chestnut yellow, subtriangular, anterior 

 margin notched, lateral deeply sinuated before the eyes ; 

 two deep chestnut diagonal bands from before the trabeculae 

 to the occiput ; eyes prominent, surrounded by a fuscous 

 spot ; trabeculae large, acute, and conical ; antennae pale 

 yellow ; prothorax small, transversely oval, channelled in 

 the centre, and margined with deep chestnut; metathorax 

 large, sub-triangular, posterior angle acute, ciliated, centre 

 yellowish white, sides pale fulvous, extreme lateral margin 



