RESULTS OF THE YALE-PERUYIAN EXPEDITION OF 1911. 

 ADDENDUM TO THE HYMENOPTERA ICHNEUMONOIDEA. 



By P. R. Myers, 



Aid, Division of Insects, United States National Museum. 



The two specimens represented in the description of this species 

 came from some additional material submitted for study after the 

 report* by Mr. H. L. Viereck was wi'itten. 



TRACHYSPHYRUS VENUSTUS, new species. 



Type-locality. — Coropuna, Peru, 14,500 feet. 



Type-specimen.— Cat. No. 18186, U.S.N.M. 



Male. — Length, 12 mm. Head shining and very finely shagreened; 

 sides of face below broadly white, the white narrowly extending 

 upward along inner orbits to a point slightly above the base of the 

 frontal pit; ciypeus, mandibles, malar space black with indistinct 

 metallic purplish reflections and very sparsely punctured; cheeks 

 highly polished and white with few widely separated punctures and 

 hairs; front black with metallic purplish reflections; vertex black 

 with metallic reflections and two small white spots; area between 

 ocelli sparsely punctured; eyes black; palpi black; scape black, with 

 indistinct purplish reflections and sparsely punctured, about three- 

 fourths as long as the first joint of flagel; flagel reddish to fuscous at 

 apex, first joint distinctly longer than second, second same length as 

 third; pronotum purplish and somewhat indistinctly, coarsely 

 striated; mesonotum purplish, shining, sparsely punctured except a 

 medial area running back from anterior margin, which is closely punc- 

 tured and bronzy purplish colored; parapsidal grooves and suture on 

 apical margin bronzy purplish colored; mesopleurse purplish with 

 bronzy purplish reflections and coarsely rugose; a small smooth, 

 shining area with a few punctures at base of pleurae just above the 

 sternauli; scuteUar fovea bronzy purplish colored; scutel purple, 

 smooth and shining with a few punctures; metanotum coarsely 

 rugose, purplish with bronzy purplish reflections; propodeum coarsely 

 rugose, bronzy purplish with greenish bronze reflections; all coxae 

 purplish with bronzy purplish reflections; anterior and middle 

 femora, tibiae, and trochanters bluish with purplish reflections. 



1 Proc. U. S. Nat. Mus., vol. 44, p. 469. 



Proceedings U. S. National Museum, Vol. 47— No. 2052. 



361 



