130 MONOGRAPHIA 



Communicated by the Rev. L. Jenyns, from the Jay 

 (Garrulus glandarius). 



24. NIRMUS CUSPIDATUS? (Louse of the Water-rail.) 



Plate VI. Fig. 2. 



Pale testaceous, oblong, elliptical, finely pubescent ; head 

 conical, lateral margin chestnut ; metathorax acutely angu- 

 lar behind; abdomen elliptical, lateral margin blackish- 

 chestnut and serrulate. 



Pediculus cuspidatus? Scopoli Ent. Carniol. 385. n. 1049. 

 Head very long, conical, and depressed, lateral margin 

 chestnut, interrupted, subangular before the antennae, and 

 a transverse band at the occiput ; antennae slender and fili- 

 form ; trabeculae small ; prothorax transverse, lateral margin 

 chestnut ; metathorax as wide as the head, with a chestnut 

 spot on each side, base much produced and acutely angular ; 

 abdomen elliptical, lateral margin serrulate, pitchy black, 

 shading internally into chestnut; legs pale yellow, long 

 and slender ; the anterior femora lobate. Length . 



The only two specimens of this species I have seen were 

 in the collection of Rev. L. Jenyns, one of which was taken 

 from the Common Water Gallinule (Gallinula chloropus), 

 and the other from the Water Rail (Rallus aquaticus). I 

 have quoted Scopoli, under an impression that our Insect 

 is the species described by him under the name of Cuspi- 

 datus, although it does not perfectly agree with his cha- 

 racter, in all points. 



25. NIRMUS ILIACI. Denny. (Louse of the Red-wing.) 



Plate IX. Fig. 4. 



Pale yellow-white, shining and smooth, with a narrow 

 black marginal band ; head and thorax testaceous yellow. 



