Vol. 1.] Jo)ies.— Catalogue of the Ephydridae. 155 



times almost indistinguishable). Antennal arista long and 

 slender, base pubescent, bare toward the tip. Vittse of the 

 thorax almost obsolete; the four characteristic rows of tho- 

 racic hairs slender, black, strongly reclinate. Wings brown, 

 veins brownish black ; a hyaline spot at each side of the broad 

 brownish band of the cross veins, a fifth spot at the base of 

 the marginal cell; second segment of the costa nearly twice 

 as long as the third. Second longitudinal vein without ap- 

 pendage ; third and fourth longitudinals with a slight diverg- 

 ence at the tips; fifth longitudinal scarcely attaining the 

 margin of the wing. Length, 3.5 to 4 mm. San Francisco, 

 California. 



Ephydra millbrae, n. sp., J and ^ . — Front bronze bluish 

 green with sparse grayish pubescence, epistoma shading from 

 a dark brown above to a light chestnut brown at the oral 

 margin, sides of the face beneath brownish pruinose ; antennae 

 dark brown, first segment lighter; proboscis black above, 

 yellow at apex ; palpi light brown ; orbits purplish blue imme- 

 diately beneath and behind the eyes. Thorax from the lateral 

 margins above marked with alternating vitta^, five of blue and 

 four of green, iridescent and sometimes indistinct; body 

 beneath light green, with very fine grayish pubescence; 

 abdomen green, slightly bronzed above; general color of the 

 legs brownish green, trochanters lighter, second pair with a 

 decided yellowish pubescence: upper half of the tibite light, 

 with a row of orange yellow hairs on the upper half behind; 

 knees yellowish ; wings hyaline, halteres lemon yellow. Front 

 sparsely clothed with short bristles, regularly arranged ; ocellar 

 protulierance considerably raised, a pair of stout macrochgeta; 

 midway between the lower and two upper ocelli, a lateral row 

 of 2 to 3 fine hairs in the center of the ocellar triangle ; a slight 

 depression below the lowest ocellus. Epistoma densely 

 pruinose, a row of bristles on the upper half in front, con- 

 verging with the oral margins laterally: the entire epistoma 

 clothed sparsely wath short hairs, a row of slight bristles 

 fringing the oral margin. Second joint of antennre with 

 numerous fine hairs, third joint destitute of a lateral pile. 

 Sides of the thorax with only two stout macrochaetffi. Veins 

 of wings yellowish at base, darker toward the apices. Pattern 

 of the thoracic macrochaetas above showing distinctly the 



