of the Subfamily iEschnina. 417 



afterwards, smoky brown; venter yellowish, the incisions of 

 the segments scarcely darker ; oreilettes of the second seg- 

 ment triangular, yellow, acute, with 3 or 4 tuberculiform 

 black teeth on the lower edge ; tenth segment transversely 

 elevated at its base, the margin regular. Superior appendages 

 very long (6 millim.), nearly as long as the eighth and ninth 

 segments united, brownish, inserted distantly at the base, 

 narrow for nearly three fourths of their length (the inner edge 

 slightly sinuous), then suddenly enlarged into a flattened, 

 obtuse, spoon-shaped concave apex, the opposing apices con- 

 tiguous ; viewed laterally these appendages are regularly but 

 slightly curved ; viewed from beneath the dilated apical 

 portion is convex, but with a circular terminal concave space, 

 margined by a fringe of cinereous hairs. Inferior appendages 

 rudimentary (not more than 2 millim.), triangular, whitish 

 yellow, the apex notched, and produced into a small black 

 tooth on either side. 



Wings hyaline, short, broad, and obtuse ; pterostigma 

 brown, surmounting 3| cellules in the anterior, 2^ in the 

 posterior ; membranule very rudimentary, whitish ; neuration 

 moderately dense, dark brown (blackish in certain lights) ; 

 subnodal sector furcating considerably before the level of the 

 pterostigma, with three rows of cellules between its branches 

 for the greater part, 4 marginal cellules; 4 cellules between 

 the subnodal and interposed sector beneath it at the widest 

 part, but for only one row, three on either side of it, ending 

 in only one marginal cellule ; one row of cellules between the 

 sectors of the triangle in the anterior, one or two cellules 

 sometimes transversely connected in the posterior ; no basal 

 subcostal nervule ; 19 antenodals and 13 postnodals in the 

 anterior, 14 and 16 in the posterior ; 4 or 5 supra-trigonals, 

 5 in the median area in the anterior and 4 in the posterior ; 

 5 or 6 cellules in the principal triangle, 2 cellules in the inner 

 triangle in the posterior, 1 in the anterior ; 3 cellules in anal 

 triangle. 



Length of abdomen {cum append.) 43 millim. ; length of 

 posterior wing 37 millim., greatest breadth of same 13 millim. 



Bab. Brazil, Eio Janeiro {Fry). One male has been in 

 my collection for about twenty years with the MS. name here 

 adopted. 



A singular species in its general form, in the appendages, 

 and in the not constricted base of the abdomen in the male, 

 possibly pertaining to the group of species placed in Tri- 

 acanthagyna, Selys. 



