WALSH — DESCRIPTIONS OF N. AM. HYMENOPTERA. I 27 



dusky with the basal |-| of joints 1-5 white. In the hind legs the 2d tro- 

 chanter and the knees are white; the extreme tip of the femora as far as 

 the white knees is black; the tibiae are white with their 2d and terminal I 

 black, the two black annuli more or less elongated towards each other on 

 the interior face ; and the tarsi are black with the basal i-J of joints 1-5 

 white. Spurs of all 4 hind legs white. 7. The wings are subhjaline; 

 veins black, radius rufous; stigma pale or dark rufous edged with black, 

 sometimes entirely black; salient angle of the 2d recurrent vein obsolete, 

 and the bullie C and D confluent, with a minute, exterior, dusky dot at 

 the point of confluence. Length c^-'T inch; $ .23-3S inch. Front wing 

 (3*. 15 inch; $ .18-.33 inch. Ovipos. .13-.20 inch. 



One d", bred Aug. 15 from some of the Microlepidoptera that 

 burrow in the gall Sallicis brassicoides, Walsh ; five ? , one bred 

 Apr. 5 from the gall on the Solidago inhabited by Euryptychia 

 saligneana^ Clemens, another Sept. 20 from Microlepidopterous 

 larva that mines the gall ^uercus prunus^ Walsh, and a third 

 found dead in the Cecidomyidous gall Salicis strobiloides^ O. S., 

 where it had doubtless preyed on some of the Microlepid optera 

 that are inquilinous in that gall. In the first and last of the above 

 galls I have repeatedly found a robust, bright orange-color larva 

 enclosed in a tough, opaque, brown cocoon, which I have little 

 doubt appertains to this species, though I failed to breed the 

 imago from isolated specimens. This Glypta is very near both 

 the preceding, but may be distinguished at once by the rufous 

 scutellum, and by several minute but apparently constant charac- 

 ters. The variation in the coloration may perhaps be partly due 

 to some of my bred specimens having been prematurely killed. 



Glypta albiscatellaris, n.sp. — cj*. — Difters irora simplicipes $ only as fol- 

 lows : — I. The tubercle on the face is large and obvious, but not near as pro- 

 minent as in tuberculifrons, and its tip is polished and sparsely punctate. 2. 

 The clypeus and mandibles are black and the palpi whitish. Labrum not 

 seen. Antennae brown-black, dark reddish-brown except the scapus beneath. 

 3. The thorax is subpolished and less coarsely punctate; the white line 

 under the humeral suture is wide and of nearly uniform width through- 

 out and extends to the tip of the suture : and the scutel and a narrow 

 transverse line behind it are white. A broad vitta inside the origin of 

 the front wing, the lower surface of the sternum and its pleura full half 

 way up from the middle and hind coxae, are all pale rufous, verging 

 beneath upon white. Mesothoracic spiracle black. 4. The carinae on 

 abdominal joint i extend i way up to its tip, and are thence subobsolete. 



5 6. The 4 front legs are white with the tips of the tarsal joints 



lightly obfuscated. The hind legs are white with the femur pale bright 

 rufous, except the knee which is white and the extreme tip before the knee 

 which is black; tibiae with their second | externally black, and their ter- 



