219 [Scudder. 



tie spot of whitish in advance of the tubercle; thorax brassy-green (6) 

 or bronze-brown tinged with green especially on pleura ( ? ); a dull ferru- 

 ginous spot on each side of dorsum anteriorly, pleura with a broad, 

 straight, abbreviated mesothoracic stripe and an elongated metatho- 

 racic spot brownish-yellow (in life lemon-yellow, the anterior paler) ; 

 wings hyaline, the ? sometimes with a smoky tinge about the nervures; 

 pterostigma black ; membranule fuscous, the base (sometimes the basal 

 half) white ; legs black, fore femora with a superior castaneous vitta ; 

 claws with a minute tooth beyond the middle ; abdomen very dark 

 bronze-green approaching to black, covered beyond segment 4 with 

 greenish-gray short pile, segments 1-2 and base of 3 in ? very dark 

 brown (in life yelloAvish-brown), 2-3 in $ greenish-black ; on sides of 

 segment 2 not extending in $ upon genital lobes, a large brownish-yel- 

 low spot (iu life luteous) ; dorsum of segment 2 with a spot on either 

 side at the apex indistinct, on 3 at the base distinct brownish-yellow 

 (in life luteous) ; abdomen swollen at the base, much constricted in 

 middle of segment 3, gradually widening so as to be nearly the width 

 of the base at segment 6, which is equal, beyond this narrowing in a 

 nearly similar degree ( (5 ) or swollen at the base, behind which nearly 

 equal; dorsum of segment 10 carinated above; appendages black, 

 superior pair ($) long, subcylindrical, ciliate except at the extreme 

 apex, when viewed from above nearly straight ; apical two-thirds ap- 

 proximate parallel ; viewed from the side they appear slightly arched, 

 the apex upcurved, pointed ; there is a minute basal tooth directed 

 downwards on the exterior margin, and just beyond it a larger one on 

 the middle of the inferior surface, starting from which the inferior sur- 

 face is subcarinated towards the interior edge before the curvino- of 

 the apex ; inferior pair a little more than half as long, shaped as in 

 CorduUa Walsliii\ appendages of ? long, cylindrical, the apices very 

 slightly curved outwards, pointed, constricted at the base. 8-9 ante- 

 cubitals ; 7-8 postcubitals ; two rows of discoidal areolets, beyond, 

 three. 



Length 2.2-2.30 ; alar expanse 2.9-3.2; pterostigma .12 ; append- 

 ages 3 .14, ? .16. 1 ^,3 ?. White Mts. August. 



Diplax rubiciindiila (Say,) Hagen. 



I suppose by the " black band before the eyes " Hagen refers to a 

 transverse band between the vertex and the front, i. e., an antenna! 

 band, since such a one is present in my specimens ; but in other places 

 he uses the same words where it refers to a band bordering the ante- 

 rior inner edge of the eyes, as in some species of yEsckna ; my speci- 

 mens differ from Hagen's description in the following particulars : the 

 tips of the superior appendages in the $ are fuscous, the apex acute 

 but not recurved, the superior edge being nearly straight, while the 



