356 Annals Entomological Society of America [Vol. V, 



Abdomen: Tcrgum, segments 1 — 3, yellow, the lateral margins of 

 the sclerites broadljf brown; on the 4th and succeedings tergites, the 

 brown lateral margins of the sclerites are paler but suffuse the whole 

 segment; 7th and 8th sclerites black; 9th yellow. Stemites, 7th black, 

 8th black basall}'^; remainder of sternum yellow. Hypop3'gium: (see 

 Fig. n). 7th stemite and tergite about as in aymara; Sth stemite rather 

 short, its length scarcely more than the 7th, its caudal margin quite 

 straight, as in the 7th. Sth tergite, broad on the sides, the caudal 

 margin quite deeply concave, reducing the median portion very con- 

 siderably. 9th stemite (see Fig. n, 9s); cylindrical, rather elongated; 

 viewed from beneath (ni) the whole caudal margin is squarely notched, 

 this notch toothed and notched again. Viewed from the side, the dorsal 

 margin is straight basally, then straight apically, the angle being about 

 150°; near its tip, produced into a complex appendage (Fig. n, v) its 

 cephalic ann conspicuousl}' chitinized, black, its caudal margin conspic- 

 uously fringed with hair. 9th tergite (see n, 9t) ; caudal angles evenly 

 rounded; caudal margin gently concave with a distinct blunt median 

 tooth, which, on the ventral surface of the sclerite, is seen to be bent 

 ventrad and continued cephalad, as an oval organ densely covered 

 with minute chitinized teeth on the ventral surface, these denticules 

 more numerous on the margins. Apical appendages; dorsal-lying, 

 viewed laterally, (a), elongate, slender, projecting straight backward, 

 the tips expanded, rounded; viewed from above, it is seen that this 

 organ is median, but deeply bifid at its tip (no), giving the ajipearance 

 of being a paired organ; the tips are divergent, enlarged apically into a 

 roimded knob. Ventral-lying appendage, viewed laterally (b) subequal 

 to the dorsal appendages in length, project catidad and slightly dorsad, 

 the tips acutely pointed; from above, this organ is broad, slightly 

 notched at the tip, and its dorsal surface appears to be concave. 



Holotype, c?, Igarape-assu, Para, Brazil, Jan. 26, 1912, 

 (H. S. Parish, coll.) 



Type in Cornell University Collections. 



I take pleasure in dedicating this interesting species to the 

 well-known South American traveller and collector, Mr. H. S. 

 Parish. 



This little species is allied to appendens End. but differs 

 considerably in coloration; the basal deflection of Cui is dis- 

 tinctly seamed with brown. This insect bears a certain resem- 

 blance to aymara but is strikingly distinct in wing coloration 

 and hypopygial characters. The flagellar segments in aymara 

 are distinctly enlarged at the base; in parishi .not at all swollen 

 basally, the segments being uniformly cylindrical. 



