4 [January 



pubescence, blue-black, slightly blue-green above, the mesothorax 

 scabrous and tinged with dull rufous as well as the scutellum ; 

 anterior dorsal part of the metathorax blue-black, the posterior part 

 ferruginous, the longitudinal impression down the middle blackish ; 

 pleura finely punctured and shining; tegulae dull rufous. Wings (Fig. 

 1, 6) fusco-hyaline, the apical margins and the posterior wings more 

 deeply and uniformly fuscous ; nervures and stigma also fuscous. Legs : 

 the two anterior pairs rather slender, somewhat flattened and rufo-pice- 

 ous, tinged with steel-blue; posterior legs deep blue, their tibiae and 

 basal joint of their tarsi very broad and flat, the latter broadly lobed 

 behind (Fig. 1. c), remaining joints of the tarsi rufous and hairy, the 

 2nd, 3rd and 4th very short, the claws bifid. Abdomen ferruginous, 

 opaque above, except the apical margins of the segments which arc 

 shining; the apical and lateral margins and broad line down the mid- 

 dle of the basal segment, and the apical margins of the 3rd and 8th 

 segments above, black or blue-black, the extreme lateral margins of the 

 dorsal segments spotted with blue-black ; ventral segments ferruginous, 

 shining with a purple gloss. Length 82 lines; expanse of wings 121 

 lines. 



Collection.— tint Soc.Philad. Two specimens examined, one of which 

 was kindly loaned me by Dr. Grundlach. 



This remarkable species differs from the typical species of Tremex 

 by the different structure of the antennae and hind legs, and the some- 

 what different veining of the anterior wings; otherwise I see no differ- 

 ence, and prefer, for the present, to describe it under that genus. The 

 narrow wings and short antennae distinguishes it at once from Urocerus. 



Fain. CYNIPIM1. 

 Gen. CYNIPS, Linn. 

 Cynips'f armatus. n. sp. 



Head and antennae black: thorax reddish-brown: legs and abdomen rufous: 

 wings fuscous, the base and apical third hyaline; scutellum armed with an 

 acute s]>in<\ 



Female. — Head black, polished; mandibles rufous; antennae as long 

 as the head and thorax, black, the five basal joints piceous, 13-jointed. 

 the joints very distinct, 2nd joint short and globose, 3rd joint longest, 

 narrowed towards the base, longer than the 1st and 2nd together, the 

 4th and two following joints subequal, each about half the length of the 

 3rd, remaining joints subequal, each about same length as the 4th, be- 

 coming gradually wider towards the tip, flattened, and minutely striated 

 longitudinally, terminal joint about one-fourth longer than the penulti- 

 mate, incisures of the joints pubescent, the pubescmce becoming longer 



