A. A. GIRAULT. 81 



an antenna (Hym. slide 110, U. S. N. M) and obtained the 

 following notes : 



Cf . acutninatutn. Wings as in Ittys Girault but densely ciliate, with- 

 out regular longitudinal lines of discal cilia. Body long and slender 

 as in Ittys, the abdomen longer than the head and thorax together, 

 conic-ovate. Marginal and submarginal veins long and slender, sub- 

 equal, the stigmal vein sessile, rectangular, a slight fuscous dash from 

 it; otherwise wings hyaline ; marginal fringes moderately long. Poste- 

 rior wings slender, apparently with two principal lines of cilia, com- 

 plete and additional to the line along each edge. Ocelli in an equi- 

 lateral triangle in the center of the subquadrate vertex, the lateral ones 

 distant from the eyes. Legs normal ; ovipositor not exserted. An- 

 tennae — scape, pedicel, one ring-joint, a single globular funicle joint 

 and a 3-jointed club. Pedicel long obconic, thrice the length of the 

 funicle joint, thrice longer than wide, over half the length of the club ; 

 the single ring-joint concealed but plainly evident when the antennae 

 are extended ; the single funicle joint short, globular to suquadrate, a 

 little over half the length of the proximal club joint ; club acuminate, 

 as long as the pedicel and funicle united, the three joints subequal in 

 length. Antennae with sparse long setae. No oblique line of discal 

 cilia leading back from the stigmal vein. 



In regard to the sameness of acuminata and pallida. In 

 the first place to give the reasons for considering them the 

 same, the original descriptions of both will have to be dis- 

 posed of, because a comparison of them will show that they 

 do not agree, intimating of course that the species are dis- 

 tinct. Now if these original descriptions are compared with 

 the descriptive notes taken from the original specimens them- 

 selves and with the whole description of the species acumi- 

 nata given above — of course conceding the latter to be cor- 

 rect — it is obvious that both of them are erroneous and in- 

 adequate. 



Secondly, conceding the proposition just made, then we 

 must take at once the evidence furnished by the types : 



1. The types were at once recognized to be congeneric and very 



similar. 



2. The only specific difference observed between the types was a darker 



ground color of the mesoscutum in pallida, a very small dif- 

 ference indeed when one takes into consideration how often 

 differences occur in individuals of the same species of the 

 family. 



TRANS. AM. ENT. SOC, XXXVII. (10) 



