10 HYMENOPTERA. 



taceous beneath ; the pubescence thin on the face, and griseous ; 

 that on the vertex fuscous, as well as that on the disk of the 

 thorax, which is very sparing ; on the sides it is more dense, also 

 on the femora, where it is nearly white, a tuft of pure white on 

 the tubercles ; the legs fusco-ferruginous, their tarsi palest ; the 

 scopa is white, having a beautiful golden reflection above ; the 

 wings hyaline. Abdomen closely punctured, and having a tinge 

 of metallic green, the margins broadly depressed, the depressions 

 rufo-piceous as well as the sixth segment above, which is longi- 

 tudinally striate : the sides of the abdomen have a little scattered 

 white pubescence, the fifth segment covered with long black pu- 

 bescence as well as the sides of the sixth ; beneath, the abdomen 

 is rufo-piceous, the apical segment smooth and shining at its base, 

 having on each side an impressed line running its entire length. 

 Male closely resembling the female, its mandibles bright fer- 

 ruginous, its face densely covered with silvery white hair ; the 

 general colouring darker, or more matured than in the female ; 

 the abdomen beneath has a thick fringe of suberect hair on the 

 margins of the third and fourth segments. 

 Hab. New Holland. (Coll. F. Smith.) 



Genus 5. LAMPROCOLLETES. 

 Lamprocolletes, F. Smith's MSS. 



Head transverse, nearly rounded in front; ocelli placed in a 

 slight curve. Mentum rather more than twice the length of the 

 labium, which is sinuated on each of its anterior margins, thickly 

 fringed with pubescence; the paraglossse longer than the tongue, 

 dilated and pubescent at the apex ; labial palpi four-jointed, the 

 basal one bent, about the length of the two following, the apical 

 joint very slender ; maxillary palpi six-jointed, the three basal 

 joints of about equal length, the following gradually a little 

 shorter, the apical one very slender. Thorax nearly ovate, the 

 wings having one elongate marginal cell, twice the length of the 

 second and third submarginal cells, the first submarginal being 

 of equal length to the two following; the second submarginal 

 cell narrowed towards the marginal, receiving the first recurrent 

 nervure in the middle, the second recurrent nervure uniting with 

 the apical nervure of the third submarginal cell ; one of the spines 

 at the apex of the posterior having on one side a row of bent teeth 

 or hooks resembling a comb ; the pubescence of the scopa beauti- 

 fully pectinate or feathery. Abdomen ovate, furnished with an 

 anal fimbria, and the sixth segment with a naked space margined 

 laterally. (Plate I. Details.) 



