308 PROCEEDINGS OF THE NATIONAL MUSEUM vol. m 



Color of legs as in figure 2,6 but the contrast between light and 

 dark areas (yellow and brownish black) is not always as great as 

 shown. Tarsi of first legs somewhat thickened; first metatarsus with 

 black, long hairs below basally, the joint continued apically as a 

 thumblike flap over the base of the next joint; metatarsal length onlj' 

 a httle less than the length of the remaining segments combined. 



Abdomen mostly pollinose black, the tergites showing creamy 

 yellow apices, especially the pregenital tergite; all tergites yellow on 

 the extreme lateral margins. There appear to be five pregenital 

 tergites: the first is rather elongate (possibly a fusion of two tergites), 

 the next three are narrower, and the fifth is again larger. The geni- 

 talia (fig. l,a-c) nearly equal the rest of the abdomen in size; termites 

 6 and 7 (apparently) form the apex of the abdomen, the seventh bent 

 back beneath to nearly the third coxae; the sLxth rather shiny black, 

 main portion of seventh dirty 3^ellow, while the apex is darkened again. 

 The single accessory organ (see fig. l,a) is an elongate flap, thin, 

 shallowly concaved along its entu-e length, the margins and underside 

 bearing numerous, slender, pale to brownish hairs, those of each side 

 near base stouter and longer; this unpaired accessory structure seems 

 to be attached ventrall}^ beneath the fourth and fifth tergites. 



The abdomen of one paratype male (deposited in the U, S. National 

 Museum) was removed, treated with sodium hydroxide, cleared in 

 phenol, and studied in glycerine; after the drawings were prepared 

 the genitalia were placed in a drop of glycerine in a microvial and 

 this was attached to the pin bearing the specimen. Figure 1,6 shows 

 the external features of the genital segments; the anal plates are 

 densely haired; just anterior to the anal plates, middorsally, is a 

 depressed area (shown in the figure by stippling); the approximate 

 position of tergite 5 is shown in dotted outline. 



In figure l,c are shown most of the internal structures visible in the 

 cleared specimen; parts labeled B and C (ejaculatory apodeme?) are 

 unpaired, B being quite dark in color. Part A (apodeme of the 

 penis?) is bifurcate at the point indicated by the label line into a right 

 and left branch (only one branch is shown), each of which bears the 

 two processes shown in the figure. 



Wings clear, the venation generally as in figure I, a; on the costal 

 base, dorsally, arises a rather long bristle reaching well beyond the 

 humeral crossvein; ventrally, a smaller bristle arises nearly opposite 

 the large one. 



Body length (in pinned specimen), 2.5-3.0 mm.; wing, about 2.5 

 mm. 



Female: With the general appearance of the male but the abdomen 

 is longer and more slender. Fust tergite long, second much shorter, 

 with the following three consecutively larger; sixth tergite elongate, 



