TEXAN HYMENOPTERA. 213 



Should the variety with black abdomen prove to be a distinct species, 

 it may be named illustris. 



Spliox iolincuinonea. 



Spli£x ichncmnonca, Linn. Syst. Nat. ii., p. 959. 



Seven S ? specimens. (Beltragej Boll; Heiligbrodt.) 



Sphcx diibitiita, n. sp. 



9- — Dill'ers ivoii\ ichncurnonca, as follows; — Form more slender; the face, 

 clypeus, sides of mesotliorax, spot beneath tegulse and metathorax clothed with 

 dense silvery pile, instead of bright golden; the mandibles and scape entirely 

 black; the wings pale yellowish-hyaline, with dusky apical margin, instead of 

 uniformly fuscous; the coxaj with silvery pile; otherwise as in ichneumonea. 

 Length .So incli. 



Three specimens. (Belfrage.) 



Prioiionyx atrata. 



Sphcx atrata, St. I'"arg. Ilym. iii., p. 355. 

 Three % 9 specimens. (Belfrage; Boll.) 



Priouonys: Thomas. 



Sphcx Thomu:, Fubr. Ent. Syst. ii., p. 199. 

 One 9 , four % specimens found abundantly on Sumach flowers in 

 August. (Belfrage.) The abdomen of the 9 specimen is entirely 

 yellow-ferruginous, except petiole; Avhilc that of the % specimens is 

 more or less varied or banded with black ; the S specimens have also 

 quite a dense clothing of silvery pubescence. 



Priononyx brisniiipcs, n. sp. 



%. — Black. clotlied with black pubescence, face and clypeus faintly silvery 

 in certain lights; mandibles toward tips and scape beneath at tips dull red- 

 dish; thorax entirely black, without any silvery markings; metathorax opaque, 

 upper surface sparsely and indistinctly punctured, with a very shallow longi- 

 tudinal central depression, widened posteriorly, sides somewhat obliquely 

 striated; tegula; pale luteous on outer margin, base brown; wings fuscous; 

 legs dark brown, co.xte and femora before black ; abdomen shaped as in ThoiiKZ 

 % , dark brown, varied with black at apex, petiole black. Length .65 inch. 



One specimen found on Sumach flowers in August. (Coll. G. W. 

 Belfrage.) Very distinct from Thomse by the total absence of silvery 

 pubescence. 



LAERIDiE. 



liarrada triloba. 



Lt/ropfi {Lyroda) triloba, Say, Bost. Journ. Nat. Hist, i., p. 372. ' 



Two specimens. (Belfrage.) 



liarrada subita. 



Lyrops {Lyroda) subita. Say, Bost. Journ. Nat. Hist, i., p. 372. 

 Oae specimen. (Belfrage.) 



