126 MONOGRAPHIA 



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

 p, g31. Pediculus Recurvirostrse. Linn. Syst. Nat. ii. p. 1019. 

 Faun. Suec. 1956. Fabr. Syst. Eut. 808. 25. Syst. Inst. ii. 481. 29. 

 Stewart. Elemt. ii. 299. 28. Tart. iii. 



Head sub-triangular ; clypeus narrow, lateral margin 

 entire, with a somewhat curved, impressed line on each side, 

 from the antennae to the occiput ; eyes flat ; antennae slender, 

 pale yellow ; prothorax transverse, much narrower than the 

 head, slightly channelled in the centre ; metathorax, pale 

 chestnut, acutely angulated posteriorly, lateral margin fuscous ; 

 abdomen ovate, pale, testaceous yellow, the first seven 

 segments with a broad fuscous lateral margin, the last three 

 segments chestnut ; legs pale yellow, rather stout. Length 



*<?* 



Obligingly communicated by Dr. Burmeister, of Halle, 

 from the Avocett ( Recurvirostra avocetta). 



19. NIRMUS HJEMATOFI. (Louse of the Oyster-Catcher.) 



Plate X. Fig. 3. 



Pale yellow white, lateral margin black ; head pale ful- 

 vous yellow ; trabeculae fuscous ; abdomen sub-clavate. 



Nirmus glaucus. Stephen's Cat. pt. ii. 332 Pediculus Haematopi. Linn. 

 Syst. Nat. ii. 1019? 29 ? Faun. Suec. 1957. Fabr. Syst. Ent. 809. 20. 

 Syst. Inst. ii. 481. 30. Stew. Elem. ii.p 298? 



Head sub-conical, pale fulvous-yellow ; clypeus with a 

 transverse and semicircular impressed line, lateral margin 

 with an interrupted black band, and chestnut line on each 

 side, extending from the antennae to the occiput, base con- 

 cave ; antennae slender, the second joint the longest ; pro- 

 thorax narrow, sub-quadrate, lateral margin black ; meta- 

 thorax transversely triangular, humeral margin black ; 

 abdomen, dull yellow white, sub-claviform, the last two 

 segments pale fuscous, lateral margin of the first seven seg- 



