PERLIDES. 191 



Nemoura putata, N(ncm. Em. May. v. 401. 

 Scotland. 



50. XeMOURA ALlilDIPENMS. 



Ferruginea, nitens ; caput thorace multo latins ; scutum antice vix 

 latius, angulis sat acutis ; alee albidcc. 



Fenup^inous, shining : head much broader than the thorax : 

 antenna' pubescent : scutum minutely rugulose, with an indistinct 

 longitudinal furrow, hardly broader in front; sides almost straight; 

 angles rather sharp : wings whitish ; veins very pale testaceous ; 

 external basilar areolet with no transverse veins ; terminal areolet 

 with one transverse vein ; submedian areolet with six or seven trans- 

 verse veins. Length of the body 2 lines ; of the wings 6 lines. 

 a. Nova Scotia. From Lieut. Redman's collection. 



51. Nemoura perfecta. 



Nigra, nitens; caput thorace multo latins; scutum f err ugineum^ 

 rugv.losum ; pedes testacei, femoribus basi nigris ; ala- hga- 

 lince, anticce fusco-nebulosce. 



Black, shining: head smooth, much broader than the thorax : 

 antennae blackish, minutely pubescent: prothorax mostly lerrugi- 

 nous, minutely rugulose, much broader in front ; sides almost 

 straight ; angles rather sharp : legs testaceous ; femora, especially 

 the hind pair, black towards the base and at the tips ; tibiae iiud 

 tarsi blackish at the tips : wings hyaline ; fore-wings clouded with 

 brown near the tips and about the transverse veins in the disk : 

 veins black. Length of the body 2^ lines ; of the wings 5 lines. 



a. Nova Scotia. From Lieut. Redman's collection 



.52. Nemoura completa. 



Nigra, gracilis, )iitcns ; caput thorace multo latius, macula testa- 



cea ; prothorax rugulosus ; pedes ferruginci ; alw hgalina, 



antic(B fusco bifasciatce. 



Black, slender, shining : head much broader tlian the thorax, 



with a large testaceous spot between the eyes : antennrc minutely 



pubescent : prothorax minutely rugulose, with a slight longitudinal 



furrow, not broader in front ; sides almost straight ; angles rather 



sharji : legs ferruginous : wings hyaline ; fore-wings with a distinct 



