366 ENTOMOLOGICAL NEWS. [Oct., I9II 



have with me. These two are Polynema flavipes Walker and 

 P. fumipennc Walker ; the specimens of the former are from 

 the collections of the United States National Museum and of 

 the latter (two specimens) from Mr. C. O. Waterhouse, some- 

 time of the British Museum. The specimens of fumipenne 

 (identified by Mr. W^aterhouse, perhaps in association with Mr. 

 Enock) I have described elsewhere; it diflFers very pronounc- 

 edly from euchariforme ; the fore wings are very much broad- 

 er, their discal ciliation very much coarser, the body and ap- 

 pendages much longer and slenderer, the legs more intensely 

 colored (orange) and thus the two species should never be con- 

 fused. The species flavipes differs nearly as much, but the dis- 

 cal ciliation of the fore wings in this species is moderately fine, 

 not coarse ; the coloration is somewhat as in fumipennc. l 



Thus, here are three distinct British species of the genus 

 which dififer from any American form known to me and I de- 

 scribe a fourth below. 



The following specimens : Polynema euchariforme Haliday 

 — a single female on a slide loaned by Dr. L. O. Howard and 

 labelled "Fredc. Enock, preparer. Order Hymenoptera. Fam- 

 ily My rmridse. Genus Cosmocoma. Species euchariformis 9. 

 The Large Fairy Fly. Spot lens, 2-inch to 3/2-inch.'' 



Polynema flaxipes Walker — A pair found mounted on tags 

 in the United States National Museum collection, now re- 

 mounted in xylol-balsam and labelled "Polynema flavipes, 

 Walker, 9 $ Am. Ent. Soc. To be returned." 



Polynema fumipenne Walker — Two females kindly sent to 

 me by Mr. C. O. Waterhouse, now mounted in xylol-balsam 

 and labelled, "'Cosmocoma fumipennis \\'alker. Eng. Richmond, 

 24.9.09. C. Waterhouse, Whitehouse Plantations." 



2. Polynema brittanum new species. 

 Normal position. 



Male. — Length. 0.80 mm. Moderate to moderately small for the 

 genus. About the same size as euchariforme with which it was con- 

 fused. 



General color brownish black or black suffused with some brown, 

 including venation, antennae, intermediate and posterior femora and 

 tibiae and distal tarsal joints. Pedicel of antenna suffused with yel- 

 lowish. Trochanters, knees, tips of tibiae, proximal three tarsal joints 

 and cephalic legs yellowish, the tarsal joints paler. Wings hyaline. 



