1008.] 



83 



unripe crab-apple), with the crown more pointed in front, and must 

 be, I think, the ftolani of Continental writers. I have not been able 

 to satisfy myself that the head of our yellow-green insect is really 

 narrower than its pronotum, as it should be in the sol an i of Conti- 

 nental descriptions, but the difference between the two in the shape 

 of the crown I have verified by careful drawings to scale under the 

 microscope. The colour distinctions do not entirely disappear in 

 dried specimens, though they are, of course, much more obvious m 

 fresh ones. 



Euptertx vrthcm, forma leucocnema, Oshn. 

 Oshanin (Catalogue des Homopteres du gouv. de St. Petersbourg, 

 p. 27, 1907) gives this name to the form of urticce which has the hind 

 tibise entirely pale. In a numerous gathering of urticcs one generally 

 finds a few specimens of this form ; at least, I have done so quite 

 recently, and my recollection is that in times past I have frequently 

 discarded pale-legged specimens as immature. It would appear from 

 Sablberg's description that the form with entirely pale legs was the 

 only one known to him. 



Typhlocyba debilis, Doug. 

 The hitherto undescribed male of this species differs from the 

 other sex in wanting the two round black spots on the forehead, and 

 the black point proper to the front edge of the pronotum is frequently 

 obsolescent ; the colour differences between the sexes are thus similar 

 to those which obtain in T. ulmi. In a numerous gathering of the 

 latter one finds a few male specimens which have the two black points 

 on the forehead that are usually found in the female only. I have 

 not yet found out what is the actual food-plant of T. debilis, but on 

 November 6th last I beat from a solitary hazel bush here, with no 

 bramble within sight, sixteen small Typhlocybce, of which thirteen 

 were T. tenerrima, mostly males, and three T. debilis, of which two 

 were males. The latter, in the umbrella, are absolutely indistinguish- 

 able from the former. 



Typhlocyba hippocastani, mihi. 

 This name must sink as a synonym of lethierryi. In view of 

 the recorded similarity of the app. ant. in the latter and hippocastani, 

 and of the fact that these appendages are in all other cases known 

 to me paired organs, it occurred to me to re-examine these parts in 

 lethierryi, which appeared from the type specimen mounted in balsam 

 with much pressure, to have three or five appendages. With the 



