56 Psyche [April 



wholly white poUinose, antennae of usual form, spiall, first joint not elongated. 

 Thorax with two small cupreous stripes in front, enclosing the acrostichals and 

 extending to the middle; outside the dorsocentrals is a wider cupreous stripe on 

 each side abbreviated at both ends. These stripes are often but little visible. 

 Scutellars two pairs, humerals two, notopleural one and sometimes another much 

 smaller; squama pale yellow with white hairs; halteres pure yellow with a dark root; 

 propleura with white hairs and one black bristle; a few microscopic white hairs 

 on sternopleura; front coxae with white hairs in front and few minute black spines 

 at tip ; fore femur on the under side with one row of spines of irregular size, larger 

 along the middle. These are on the inner side of the folded tibia, but at the tip is a 

 single spine that comes on the outer side. There is a little variation in these femoral 

 bristles, and in one of Wheeler's cotypes of eldoradensis, a male, from Magdalena 

 Mts., N. M., I find by removing the tibia that the femoral bristles consist of a 

 series near the base of about five minute ones bent laterad and three larger ones 

 near the middle, standing straight down; these all forma row as far as their inser- 

 tion is concerned. Wheeler's description of two rows must refer to the female. 

 Tibia with a row of setules on the inner side, progressively longer and more erect' 

 toward the tip, the last one still longer and standing on a sharp inwardly curved 

 point of the tibia. Middle and hind femora simple, slender but not greatly 

 elongated, both a little bowed. Wings hyaline, unspotted, of medium size, the 

 veins broadly yellow at base; this yellow color varies greatly in difiFerent specimens, 

 but generally the costa is yellow to a point about halfway between the tips of the 

 first and second veins. Third and fourth veins quite strongly convergent at tips. 



Abdomen more or less greenish, rather broad and short, covered with white hairs; 

 the male appendages are so small and retracted that it is often difficult to determine 

 the sex of the specimen. Length, 3.2 mm.; of wing, 4.5 mm. 



Female. Postorbitals about a dozen on a side; bristles of the lower side of front 

 femur in two rows, which are a little irregular near the middle.; Length, 4.5 mm.; 

 3f wing, 5.3 mm. 



Thirty specimens, both sexes: Magdalena Mts., N. M., Aug- 

 1894, W. A. Snow; Las Cruces, N. M., Aug. 23; 40 miles north 

 of Lusk, Wyo., July, 1895; Palo Alto, Cal., Aug. 6, 1894 (all 

 the seven preceding specimens are cotypes of Professor Wheeler's 

 eldoradensis, from Professor Melander's collection) ; Texas, Octo- 

 ber 18, 1899; Jacksonville, Tex., Oct. 20, 1895; Tifton, Ga., 

 Sept. 24, 1896; Biscayne Bay, Fla. (Mrs. Slosson); De Funiak 

 Springs, Fla., Mar. 1, 1900; Brookings, S. D., one pair copulating 

 on surface of water, Apr. 10, 1900; Moscow, Ida.; Pacific 

 Grove, Cal., on seepage of sand dunes near sea beach. May 6, 

 1906; Palo Alto, Cal., Oct. 7, 1905; Redwood City, Cal., Apr. 

 25, 1906; California (Coquillett). 



The type locality of aestuum was Newport, R. I., which with 

 Johnson's recently published New Jersey records, nicely rounds 



