NEW BRITISH SPECIES, ETC., IN 1869. 53 



guishing the concolorous dark insect hitherto considered as 

 a var. of A.fuscipes. Apart from the colour difference and 

 broad form of this insect, he notes that in A. fuscipes the 

 hind margin of the dorsal plate of the 6th abdominal seg- 

 ment is slightly emai'ginate in both sexes (though rather 

 more so in the male than the female), and fringed with short 

 ferruginous cilia; and that the ventral plate of the same 

 segment is rounded at the hind margin in both sexes ; 

 whereas, in A. lata, the dorsal plate is completely rounded 

 in both sexes, with black cilia, which are long in the male 

 and short in the female, and the ventral plate is rounded in 

 the male and emarginate in the female. 



He also notes that Gravenhorst's lafa was described from 

 North American specimens, and that, if our insects be not 

 conspecific with them, it will be necessary to rename the 

 latter. 



Erichson expressly states that the American type fuscipes 

 entirely agrees with the European, and mentions black spe- 

 cimens from Pennsylvania and Austria. 



Gravenhorst briefly notes that the elytra are shorter in lata 

 than fuscipes. 



19. Aleochara fumata, Er.; D. Sharp, 1. c. 

 Dr. Sharp has no doubt that this insect is only a var. of 

 A. hrevipennis, as he has all the intermediate forms, and 

 can find no characters to distinguish between the most typical 

 fumata and that species, except size and colour. 



20. Ilyobates (oxypoda) glabriventris. Rye, Ent. Mo. 

 Mag., vol. i, 1 Feb., 1865 (described) ; ib', vi, 3. 

 M. Fauvel, to whom I have sent a type of this species, 

 informs me that it is his Calodera {Ilyohates) Bonnairei, 



