236 MONOGRAPHIC 



is slightly sinuated, posterior margin rotundate, fringed 

 with long hairs ; abdomen ovate, lateral margin reflexed, 

 with a narrow fulvous border ; legs very thick, greyish- 

 yellow ; apex of the femora with a black annul us, anterior 

 femora very large and rotund; tibiae fringed with long hairs. 

 Length 1J. 



The Rev. L. Jenyns sent me this species taken from the 

 White-fronted Goose (Anser albifrons). I have found one 

 specimen on the Domestic Goose, and received another 

 from my brother, taken on a Shoveller (Anas clypeata). 



4. TRINOTON LITURATUM. (Louse of the Smew.) 



Brevius latiusque, pallidum, sigriaturis fuscis obsoletis ; 

 pedibus gracilioribus, longioribusque. Long. 1J. 



Trinoton lituratum. Nitzseh. Germ. Mag. iii. p. 300. Steph. Cat. pt. Hi. 

 p. 334. Trinotum lituratum. Burmeister Handbuch ii. pt. ii. 441. 

 Ricinus Lari. De Geer, Mem. vii. pi. 4. fig. 12. ? 



I introduce this species although I have never seen an 

 example, but as it is the parasite of a British bird, there is 

 no doubt but that it will occur, if it is not already in some 

 private collection ? 



SUB-GENUS V. EUREUM. ( Nitzsch.) 



SUB-GENERIC CHARACTER. 



Head very broad, transverse, temporal region small, with a 

 foveola on each side, but not apparently to interrupt the 

 continuity of the lateral margin ; antenna concealed, if 

 any? mesothorax small, sometimes absent; abdomen 

 broad. 

 The species of this sub-genus are few in number, but 



generally large, and infest the Hirundinidse, 



