1900.1 177 



I find the species well distinguished from vinculella, 11. -S., firstly by 

 the black upper surface of the head, and secondly by the dark upper 

 surface of the antennae (on which I can distin^juish no annulationa as 

 described by Eichardson), whereas in vincuJelln the antennae are 

 conspicuously annulate with black, or dark brown, and very pale 

 ochreou.s ; moreover, the form of the case is somewhat diff"erent. In 

 the true vinculrUa ihe middle and the two extremities are more 

 dilated than in that of richnrdsoni, which has a smaller case rather 

 less flattened and but slightly bulging at either end. It will almost 

 certainly be found that in Continental collections there are other 

 species mixed in the series of vinculeUa. 



I have at this moment six species before me, and perhaps seven, 

 belonging to this group, without including vinctella, H.-S., which I 

 have never seen, and with which Zeller (Lin. Ent., VI) admitted he 

 was unacquainted, except from the figure, although he subsequently 

 labelled two specimens in his collection with this name. 



The true vinctella, as figured and described by Herrich-SchafEer 



from a single specimen in Fischer von Eoslerstamm's collection from 



the Prater, Vienna, had the cilia of the fore-wings injured, and 



remains at this time practically unknown, although referred to by 



some authors — from argentimaculella, Stn., the absence of white 



specks around the apex and termen distinguish it without doubt. 



(I), argentimaculella, Stn. : Zeller had eight specimens, seven of 



which are apparently right, agreeing with Stainton's description 



(the remaining specimen is now described as pachyceras, sp. n.). 



I have a series from Machin and seven specimens in the 



Christoph collection. 



(2). vinculeUa, H.-S. : Zeller had two specimens, both labelled 



vinctella. These agree with others in my collection sent out by 



Staudinger as vinculeUa and with specimens in the Christoph 



collection. The heads of all are rather darker yellow than in 



Herrich-Schaffcr's figure. 



(3). sp.?: Zeller has one specimen labelled vinculeUa which he 



minutely describes (Lin. Ent., VI, 173 — 4), but which cannot be 



the true vinculeUa. It agrees with nothing that I know. 



(4). vinctella, H.S. : Zeller himself said that he did not know this 



species (Lin. Ent., VI, 171, Anmk) ; he described it from Herrich- 



Schaffei''s fig. 274, and I am not acquainted with it, but should 



hesitate to follow Zeller in regarding it as a possible variety of 



vinculeUa. 



(5). richardso7ii, n. sp. : the Purbeck species, which has been called 



