1885.] 85 



readilv known from it by the fascia under the stigma, as well as by 

 the longer 3rd cubital cellule, and by the maxillary palpi. 



UsTULATA (pi. V, fig. 7, vol. ii). — No author describes this species 

 as a variable one, yet in Scotland it varies considerably, especially in 

 the coloration of the legs and wings. Thus Thomson separates it 

 ^rom II.fusci2:>es and ciliar is hj the wings being yellowish, and the 

 tibise and tarsi pale yellow, while he characterises the two species I 

 have named by the terms "Alee hyalinae," but neither the colour of 

 the legs, nor of the wings, can be relied upon as marks of distinction 

 between ustidata a^ndfiiscipes. With the darker specimens of iistulata 

 the best marks of distinction are that fuscipes has the 3rd cubital 

 cellule a little longer than the 2nd, while in ustidata it is shorter ; 

 and in fuscipes the 6th joint of the maxillary palpus is double the 

 length of the 4th ; in ustidata not more than lialf the length. 



Ateata is a species easily recognised by the fascia in the radial 

 cellule, by the wide blotch, and by the transverse marks on the dorsum 

 of abdomen. 



j SCHIZOCERA, Latr. 



j Thomson splits up ScUzocera of the older authors into two : 



Schizocera having, according to him, the lanceolate cellule petiolate, 

 and the antennge inserted over the clypeus ; and Cyphona with the 

 antenna well up above the clpyeus, and the lanceolate cellule con- 

 tracted. In some species of Schizocera {sensu st.) the lanceolate 

 cellule is certainly contracted, and, I believe, this is the case with most 

 of tbem, but the basal part of the nervure is very short and not 

 always easy to see. The form of the cellule, therefore, cannot serve 

 to separate generically the two divisions ; while I find so many grada- 

 tions in the mode of insertion of the antennae that I am unable to look 

 upon tbis as a generic character. Further, the same species formed 

 the type of Schizocera and Ci/phona, so that the latter name is scarcely 

 admissible. If, then, S. geminata is to be separated from Schizocera, 

 the name of Sericocera, Brulle, should be used, as it does not seem to 

 differ from Cyphona, Thoms., except in having the antenucT longer, 

 and with longer and more silky pubescence. Our two British species 

 of this group belong to Cyphona. 



1 (2) Body entirely black, legs black, tibiae and tarsi white geminata, L. 



2 (1) Abdomen and thorax in part luteous; femora in part, or wholly, and tibisB 



, . ,1 .. /tirca^a, Till- 



and tarsi, yellow (\^1. ii, pl. 5, fig. 9.) 



{To he contained.) 



