ANOPLURORUM BRITANNIA. 141 



gin rotundate, posterior slightly produced, and strongly ci- 

 liate ; abdomen very much elongated ; legs rather short, 

 anterior femora large and rotundate. Length 1 



I obtained a few specimens of this species from a House 

 Martin (Hirundo urbica) killed at the village of Ilkley, in 

 the West Riding of Yorkshire, which are the only speci- 

 mens 1 have seen. 



41. NIRMUS HYPOLEUCUS. (Louse of the Goatsucker.) 



Plate VI. Fig. 8. 



Cinnamon -coloured, shining, and smooth ; clypeus with 

 a bifurcate impression ; antennae and legs fulvous yellow, 

 lateral margin of the head, thorax, and abdomen deep 

 chestnut ; abdomen whitish beneath. 



Nirmus hypoleucus. Nitzsch. MSS. 



Head large, oblong, sub-conical; clypeus rotundate, 

 with a pale bifurcate impression extending into the vertex, 

 orbital space and longitudinal space passing to the occiput, 

 deep chestnut, base truncate, with several long hairs on 

 each side ; antennae long, slender, filiform, the second joint 

 the longest; trabeculae very minute; prothorax about one- 

 third the length of the head, sub-quadrangular; metathorax 

 trapezoidal; abdomen long and sub-claviform, last seg- 

 ment very small, sutural margin ciliate and paler, lateral 

 margin deep chestnut ; legs long and slender, anterior pair 

 very short, nearly concealed under the occiput. Length 1 J. 



Of this very rare species I have seen only my own speci- 

 men which I took from a Goatsucker (Caprimulgus Euro- 

 paeus). Dr. Burmeister, who very obligingly forwarded me 

 a drawing of this insect, made by the late Professor Nitzsch, 

 states that it is equally rare in Germany, and that although 

 the latter had been several years industriously collecting 

 this tribe of insects, he had met with only three specimens. 



