112 MONOGRAPHIA 



slender, pale yellow ; trabeculae small ; prothorax small, 

 transverse ; metathorax transverse, sub-conical, posterior 

 margin rotundate ; abdomen elongate ovate, pale fulvous, 

 lateral margin and last three segments obscure chestnut ; 

 legs pale yellow, thick and strong. Length f . 



The only specimen of this species which I have seen, was 

 forwarded by the Rev. L. Jenyns, from the King-fisher 

 (Alcedo Ispida). 



SUB-GENUS II. NIRMUS. 



Nitzsch, Bunneister, Stephens, Children. Pediculus. Linnaeus. 

 SUB-GENERIC CHARACTER. 



Body generally narrow and elongate; head of moderate 

 magnitude, temporal margin rotundate ; trabeculae none, 

 or very small and rigid ; antenna? generally alike in both 

 sexes, rarely thicker in the males, and still more rarely 

 branched;* abdomen with the last segment in the males 

 entire and rounded ; mesothorax none. 



* Head rotundate or cordate. 



1. NIRMUS CAMERATUS, (Louseof the Black & Red Grouse.) 



Plate IX. Fig. 9. 



Deep chestnut and pilose ; head short and cordate, cen- 

 tral band and sutural margins of the abdomen pale yellow- 

 white ; abdomen sub-ovate. 



Nirmus cameratus. Nitzsch. Germ. Mag. iii. p. 291. Steph. Cat. pt. ii. 

 p. 331. Bunneister Handbuch ii. pt. ii. p. 430. Pediculus Tetraonis. 

 Linn. ii. 1020 ? Stew. Elemt. ii. p. 300 ? Pediculus Lagopodis. Linn, 

 ii. 1020? Stewt. Elemt. ii.p. 300. spe. 35? Pediculus Lagopi. Fabr. 

 Faun. Grcenl. p. 220. 192 ? Mull, prodr. 2200 ? 



Head cordate, anterior part slightly produced, lateral 



* I know of no British example with this character, which is given by 

 Nitzsch. 



