ANOPLURORUM BRITANNIJE. 165 



head pale yellow, with a black spot on each side behind the 

 eyes ; abdomen with a fuscous interrupted fascia down the 

 centre. 



Lipeurus variabilis. Nitzsch. Germ. Mag. iii. p. 292. Stephens's Syst. 

 Cat. pt. ii. p. 332. Burmeister Handbuch ii. pt. ii. p. 434. Pediculus 

 caponis. Linnaeus Syst. Nat. ii. 1020. 33. Faun. Suec. 1960. Fabri- 

 cius. Syst, Ent. 809. 30. Syst. lust. 2. 482. 35. 



Head quadrate ; clypeus semicircular, with a black mar- 

 gin truncate before the antennae, a black spot behind each 

 eye, and two hook-shaped ones at the occiput, base truncate, 

 angles obtuse, in the male the occiput is much narrower 

 than the clypeus, angles more acute and the whole head 

 longer ; eyes prominent ; antennae long, pale yellow, apex 

 chestnut, filiform in the female, in the male the first joint 

 very long, somewhat conical, with a strong blunt tooth on 

 the inferior margin, second cylindrical, third short, inter- 

 nally produced ; prothorax quadrate, not so wide as the 

 head, with a black uniform margin ; metathorax bilobate, 

 posterior margin angulate, with a fasciculus of hairs on each 

 side proceeding from a fovea, lateral margin black ; abdo- 

 men long, nearly cylindrical, with a broad black lateral 

 margin and a fuscous interrupted fascia down the centre of 

 variable extent ; legs pale yellow, slender, the superior 

 margin dusky ; apex of tibiae and tarsi chestnut. Length 

 fto 1. 



Common on the Domestic Fowl, preferring the primary 

 and secondary feathers of the wings, among the webs of 

 which they move with great celerity, 



2. LIPEURUS POLYTRAPEZTUS. (Louse of the Turkey.) 



Plate XV. Fig. 5. 



Pale yellow -white, margined with black ; head panduri- 

 form ; abdomen elongate, all the segments but the last with 

 a greyish-brown trapezoidal spot on each side. 



