162 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. xxv. 



to the transverse posterior line. I have only a female at hand, but Mr. 

 Grote's type was a male. He compares it with pseudargi/ria^ states that 

 it does not have the exaggerated tufts on abdomen and tibiie, and adds 

 that it has "a curious fan-shaped tuft of spreading hair arising from 

 the upper surface of the second joint of the unusually prominent 

 palpi," 



This character is distinctive and will serve to differentiate the male 

 from all others of our species. The female is readily recognizable by 

 the l)lackish shade already described. All the known specimens are 

 from Florida. 



Suhj)unctata stands by itself, but in man}^ points resembles uni- 

 pum'ta. It is decidedly smaller, has somewhat narrower primaries, 

 but of the same shape, and has the dark shading over the median vein, 

 relieved by a single white dot at the end of the cell. 



In other respects the type of maculation is the same, but the color 

 in suhpimctata is darker and it is closely strlgate with bhickish on the 

 veins and in the interspaces. The secondaries are white at base, semi- 

 translucent, with a smok}^ outer border. Behind the collar is a dis- 

 tinct divided thoracic crest, and this separates the species sharplv from 

 unipunda. 



In the male the anterior legs have a fringe of black scaly hair on 

 the cox*; the femora have a dense fringe of shorter scales; the tibial 

 vestiture is short, dense, and not prominent. On the middle leg the 

 femora have a moderate fringe of not very long hair; the tibial are set 

 with moderate hair on all sides, but it is neither very dense nor brush- 

 like. On the posterior leg the femora have a moderate fringe basally 

 and the tibiaj have thin, scant, longer hair. 



The male genitalia are characteristic. The harpes are ver}^ broad 

 basally and beyond the middle narrow aljruptly and evenly from both 

 margins to about pne-fourth their previous width; beyond that they 

 broaden gradually to a slightly rounded tip which is furnished with a 

 series of six long bristle-like hairs set in conspicuous pits. The clasper 

 is an irregular corneous plate from which arises a short, cylindrical, 

 nearl}^ straight spur and two lower, somewhat curved, pointed proc- 

 esses; quite unique in the genus. 



Dr. Strecker's species coinjylicata is a small example of this species, 

 whose home is in Texas and New Mexico. 



Pollens is typical of a rather well-deiined group in which the vesti- 

 ture is thin and hairy, forming no obvious tufting on the thorax and 

 leaving the collar and patagia3 not or but feebly defined. There are 

 no lines or other marks on the collar and none on the thorax. The 

 primaries are normally trigonate, Avith marked but not acute apices, 

 without longitudinal dark lines or obvious discal spots, the median 

 vein whitish, rarel}^ well marked, and the transverse posterior line 

 wanting or reduced to two black dots. The secondaries tend to 



