52 STUDIES IN AMERICAN EPHYDRIDAE (dIPTERA) 
not the only one in my material which will. Until the types are 
compared or examined by a competent student, I hesitate to 
use Thomson’s name. 
Var. minima new variety 
Smaller than the typical form (2.5 mm.). Thorax uniformly greenish gray 
without any suggestion of stripes or spots on the dorsum or pleura. Abdom- 
inal dark bands obscured, but not attenuating laterally; bases of tarsi pale; 
second costal section twice as long as third. 
Holotype. — cf ; Jemez Mountains, New Mexico, IX, 10, 1914, 
(J. Woodgate), [A. N. S. P. No. 6108]. Paratijpe. — 1 cf ; topo- 
typical. 
I cannot consider this more than a variety of the common 
western species. 
Notiphila atrisetis new species 
Similar to macrochaeta both in color and structure, differing in the tarsal 
fascicle of the male below normal in length, minute. Furthermore the fore 
tarsi are entirely black and the dark abdominal bands broader and more shin- 
ing, especially in the females, thus suggesting occidentalis. This form also 
averages slightly larger than macrochaeta. Length. — 3.5 to 4 mm. 
Holotype. — cf ; Desert Edge, San Diego County, California, 
April 17, 1915, (M. C. VanDuzee), [A. N. S. P. No. 6115]. Para- 
types. — 1 cf , 3 9 ; topotypical. 
This form is likely to be confused with occidentalis and olivacea, 
if the color of the tarsal fascicle is not given attention. The 
females are difficult to separate from those of macrochaeta, but 
the dark abdominal bands seem to be broader and more shining 
in this species. Considering the larger size and general appear- 
ance, besides the characters mentioned above, I cannot treat this 
form as a variety of any known species. 
A male and female from Great Salt Lake, Utah, VI, 8, 1915, 
(M. C. VanDuzee), also seem to belong here. They apparently 
are identical with the typical series. 
Notiphila olivacea new species 
This and the following species belong to a division of the scala- 
ris group differing from that including scalaris in being more 
brownish or greenish, the abdominal bands less developed and 
the frons and mesonotum more noticeably vittate. This species 
is likely to be confused with some of the forms of scalaris, but I 
cannot consider it synonymous, although its limits are not satis- 
factorily established at present. The vittate frons, distinct when 
