318 DIPTERA FROM SOUTHWESTERN UNITED STATES 



trochanters and tibiae reddish testaceous. Wings hyaUne, in the male with 

 a large brown mark extending on costa from slightly beyond level of inner 

 cross-vein to apex of wing, filling nearly all the area from apex of fourth vein 

 to costa and backward to near outer cross-vein; no such mark on wings of 

 female. Calyptra white. Halteres yellow. 



Male. — Head distinctly broader than thorax, and nearly twice as broad as 

 long at center of frons; one pair of bristles on interfrontalia; each orbit with 

 five bristles; antennae short, barely more than half as long as face, third joint 

 rounded apically; arista bare; vibrissal angle midway between upper mouth 

 margin and apex of third antennal joint; cheek nearly as high as eye, marginal 

 bristles sparse and strong. Mesonotum with three pairs of presutural acros- 

 tichals; lower two sternopleurals about half as long as upper two. Hypo- 

 pygium small, retracted; fifth sternite with a deep, broad, rounded central 

 excision. Fore tibia with one antero-dorsal and one posterior bristle; mid 

 tibia with one antero-dorsal and two postero-dorsal bristles; hind femur with 

 three to four very widely spaced antero-ventral bristles on apical half; hind 

 tibia with two to three antero-ventral, sLx to seven antero-dorsal, and three 

 to four postero-dorsal bristles. Veins of basal half of wing weak, the costa 

 noticeably so, especially between apex of auxiliary vein and apex of first; the 

 strong costal spines on imder side of costa present only from the beginning of 

 the dark mark on wing to apex. Third and fourth veins parallel on apical 

 portion. 



Female.- — Differs from male in having the head about equal in width to 

 thorax, the orbits with six bristles, the wing venation normal, the costal thorn 

 distinct; and the spines on costal vein present from a short distance beyond 

 apex of first vein to apex of second. Length, 4.5 mm. 



Type. — d^; San Francisco, California, August 7, 1908, (F. E. 

 Blaisdell), [A. N. S. No. 6220]. Allotype.— Same locality, May 

 27, 1908, (F. E. Blaisdell). 



This species is very similar to apicalis Stein, a Chinese species, 

 but differs in color and chaetotaxy of the legs. Stein makes no 

 mention of any peculiarity of wing venation in apicalis such as 

 is described above. 



Fucellia maritima Haliday 



1838. Halithea marilima HaUday, An. Nat. Hist., i, (2), 186. 



Two males and two females, San Francisco, California, August 

 7, 1908, and May 27, 1908, (F. E. Blaisdell). 



This is the most widely distributed species in this country. I 

 have seen it from the Gulf Coast in Texas, and various points on 

 the Atlantic and Pacific coasts and have taken it on the Little 

 Wabash River in Illinois and on the shores of Lake Michigan. 

 The species occurs also in Europe. 



