72 MONOGRAPH I A 



cate; antennae pale, tawny yellow, slender, sub-clavate ; 

 trabeculte long, curved, and acute ; eyes obscure ; pro- 

 thorax somewhat conical, with a broad depression in the 

 centre ; metathorax narrow, sub-triangular ; abdomen 

 acutely ovate, milky white, with the lateral fasciae, and 

 three terminal segments deep liver-brown ; legs long, rather 

 slender, light chestnut. Length f . 



Communicated by W. M. Tweedy, Esq. of Truro, from 

 the Dunlin (Tringa variabilis). 



10. DOCOPHORIS MERGULI. Dmny. (Louse of the 

 Common Rotche.) 



Plate HI. Fig.J. 



Slender, chestnut, smooth and shining ; head large and 

 conical, with two transverse and two sub-angular longitudinal 

 bands ; thorax much smaller than the head ; abdomen 

 oblong, oval. 



Head bright chestnut, yellow, large, conical, with an 

 acuminate depression in front, two transverse liver-coloured 

 bands and two sub-angular deep chestnut ones, extending 

 from the antennae to the occiput, where they become united ; 

 antennae slender and cylindrical ; trabeculse large and 

 acute ; eyes small but prominent ; prothorax very small, 

 transversely conical, deeply channelled, lateral margin 

 dark liver colour, base semicircular; metathorax small, 

 posterior margin acutely angular ; abdomen the width of 

 the head, oblong oval, milky white, first segment and the 

 lateral transverse, fasciae on the six following deep chest- 

 nut, becoming much darker towards their extremities, with 

 two foveolae on each, eighth and ninth segments pale, tawny ; 

 legs tawny, yellow ; anterior femora enlarged. Length 3. 



For an opportunity of figuring this species, which is the 



