NEW BRITISH SPECIES, ETC., IN 1861-62. 107 



APTERA, Guerin, Rev. Zool. 90 (1839) 

 Ptil'mm; Erichs. ; Wat. Cat. {aptera]. 



Mr. Matthews associates these two forms, but i-emarks 

 that it is strange testacea should so rarely occur, both here 

 arid on the continent, whilst aptera, the only one with 

 which it can be associated, is the most generally dis- 

 tributed of the genus. 



Among Mr. Matthews' specimens of testacea (all of which 

 were taken in company with aptera), is one that agrees 

 exactly with the type specimen of Ratishonensis sent by 

 Dr. Schaum. 



Seven examples of te.'^tacea were tuken by Messi'S. 

 Matthews and Hildebrand in the Midland counties ; it has 

 also been taken by Mr. Janson in the London district ; on 

 both occasions along with aptera. 



P. aptera was first found by Mr. Janson in the London 

 district, and afterwards taken plentifully by Messrs. Janson, 

 Scott, Douglas and Gorhara ; found also in the Midland 

 counties by Messrs. Matthews and Hildebrand. 



Sp. 8. GRACILIS, Gillm. in Sturm's Deutsch. Ins. 

 xvii. 62, pi, 324, fig. 3 ; Matth. Zool. 8059 



(1862) {alata). 



ANGUSTULA, Gillm. loc, cit.j 66, pi. 324, f. 6; 



Wat. Cat (aptera). 



One specimen only of P. gracilis has yet occurred, found 

 by Mr. Matthews, in company with P. angustula, which 

 latter was first taken by the same gentleman in the Midland 

 counties, and afterwards by Mr. Janson in the London 

 district; in both localities rather plentifully. 



119. Trichopteryx attenuata, Gillm. loc. cit., 49, pi. 

 322, f. 5; Matthews, Zool. 7975 (1862). 

 Distinguished from the rest of the genus by the transverse 



