219 



October 16, 1861. 

 The President in the chair. 

 The folloTving papers were presented : — 

 Notice of the genus Selandria. By Edward Norton. 



This genus was separated into four sections hy Hartig, named 

 Blennocampa^ Hoplocampa, Eriocampa, and Selandria. These names, 

 founded in part on the sHmy, spiny, or woolly skins of the larva, are 

 doubtless correct in Europe, where they are generally adopted. But, 

 as will be seen from the following descriptions of our species, the 

 reverse seems to be true here, as far as our knowledge extends. The 

 smooth or spiny larva of S. vitis or S. ruhi come under the head of 

 Blennocampa, while the sHmy larva of S. cerasi and the slug-hke S. 

 rosce belong to Eriocampa. Therefore, I question whether these 

 names of subdivisions should be adopted in this country. The sec- 

 tions themselves, however, are founded on the external characters of 

 the mature insect, and in these both European and American species 

 agree. 



Order Hymexoptera. 



Selandria, Leach. 



Antennas mostly short and stout, nine-jointed, third longer than 

 fourth ; terminal joint short ; mandibles bidentate ; wings broad, 

 thin, with two marginal cells divided by a straight oblique nervure, 

 and four submarginal cells, the first small and rounded, the second 

 and third of equal size, the second receiving one and the third two 

 recm-rent nervure s ; body broad, hardly longer than thorax; legs 

 simple, with two short, unequal spines at the apex of the tibia, 

 the inner spine bifid on the anterior pair. LarvsB twenty and twenty- 

 two-footed, presenting great differences in appearance and habit, 

 being shmy, hairy, and woolly ; feeding in companies or alone ; eating 

 the whole leaf as they go, or removing only the cuticle of the leaf, 

 and forming sometimes one and sometimes two broods in a year. 



Section 1. (Blennocampa, Hartig.) Lanceolate cell of upper wing 

 petiolate. 



Tribe 1. (Blennocampa, Hartig.) Under-wing without middle 

 ceU. 



1. S. VITIS, Harris. Ins. Inj. to Veg. p. 413. Tenthredo pygmcea. 

 Say. Long's 2d Ex. 2, 318. 



9 (5 . Shining black, with red shoulders ; antennae somewhat thick- 

 ened in the middle ; second joint nearly as long as the first ; apical 

 joint short ; nasus and labrum white ; mandibles stout, second tooth 



