140 



PSYCHE. 



posterior margins of eye, which are 

 bare. The ej'es are beiter described as 

 having two very distinct parallel vertical 

 stripes of pubescence, for the whole 

 glabrous area of each eye is confluent. 

 I have already recorded this species 

 from New Mexico, from the Mesilla 

 Valley of the Rio Grande at Las 

 Cruces (Trans. Am. Ent. Soc. Mch. 

 1895). The single female there men- 

 tioned, taken August 19, belongs also to 

 the variety testaceus (as Snow later 

 stated in Kans. Univ. Qiiart. April, 



■895)- 



2. Paragus tibialis Fall. var- 

 dimidiatus Lw. One 9 , and four 

 ^s. Near edge of sands, at Wliite 

 Water Holes, Oct. 6. On flowers of 

 Aster farviflorus Gray. Length, 3J 

 to nearly 5 mm. The vertical triangle 

 of $ is about twice as long as great- 

 est width. In the preceding spec- 

 imens of P. bicolor var. testaceus, it 

 is about three times as long as greatest 

 width. I believe that the American 

 forms are to be classed with the Euro- 

 pean varieties. But the European form 

 with only the first two segments of 

 abdomen black and tip with or without 

 black, according to Schiner who paid 

 particular attention to these varieties, 

 possesses no distinctive name. At least 

 Schiner gives none. Loew, however, 

 described this form as dimidiatus, 

 except that he included with it a ? of 

 the typical form, which is distinguished 

 by having no red on the abdomen. I 

 think it will be permissable, therefore, 



to use Loew's name for this variety, 

 with the abdomen red except first 

 and second segments. 



The above specimens are moderately 

 constant. The 9 has the first two 

 segments completely greenish-black. 

 The $ s all have the hind border of 

 second segment red, sometimes widely 

 so, one $ having second segment only 

 narrowly black on front border. The 

 9 has tip of abdomen, being last halt of 

 fifth segments and all of rest, blackish. 

 The $ s have only a brownish tinge on 

 last half of fourth, and anterior margin 

 of fifth segments. Femora all black, 

 except yellow tips. 



This is the first record of this species 

 from New Mexico. It is recorded from 

 Colorado on the north, and Sonora on 

 the south. 



3. Zodion fulvifrons Say var. ab- 

 domlnale Say. One 9 • Near edge of 

 Sands, at White Water Holes, Oct. 6. 

 On flowers oi Aster farvijlorus Gray. 

 Length, 6 mm. Front silvery along 

 orbits, yellow, reddish-yellow at vertex. 

 First two antennal joints and upper side 

 of femora tinged with brownish. The 

 third or median narrower brown vitta 

 present. Second and sixth abdominal 

 segments yellowish, with a median red- 

 dish line, rest brownish. All silvery 

 pollinose, except median line of sixth 

 segment. Pair of median stripes in- 

 distinct, but traceable on third and 

 fourth segments. (See paper on Dipt. 

 Organ Mts., for further notes on this 

 variety.) 



