Vol. VIII] ALDRICH— KELP-FLIES OF NORTH AMERICA 175 



Zoology, Cambridge, Mass., bearing the label, ''Summit Sierra 

 Nevada, July 17. O. Sack," in Osten Sacken's handwriting. 

 This locality, so far from the seashore and elevated about 7000 

 feet above it. seems almost incredible for a Fucellia; it agrees, 

 however, wuth Osten Sacken's statement on the first page of 

 his "W^estern Diptera", that he spent two weeks in July, 1876, 

 in collecting about Webber Lake in the Sierras, this lake being 

 near the summit north of the Southern Pacific railroad. 

 Whether he did not accidentally incorporate a seacoast speci- 

 men W'ith his summit material is the question. 



Type and paratypes in Museum of California Academy of 

 Sciences; paratypes in U. S. National Museum. 



See notes on relationship under Fucellia bicruciata Stein. 



10. Fucellia bicruciata Stein, 

 Stein, Wien. Ent. Zeit., xxix, 20. — Miednaja, Bering Straits. 



"Front very broad, above the antennae at least twice as broad as one 

 eye at the same level, with two pairs of cruciate bristles, one pair close 

 behind the other, equally strong and equally far apart, in front of which 

 is still a third pair which stand farther apart. The projecting part of the 

 front is in profile completely convex. Bucca very wide, fully equal to the 

 eye-height ; back of the head very bulging. Antennae shorter than the 

 face, third joint hardly longer than the reddish second, arista thickened on 

 the basal fourth. Palpi black and bristly, quite stout. Thorax colored and 

 marked as in fucorutn, acr in two rows, anteriorly with small, scattered 

 hairs between them ; prealar entirely wanting, stpl two in front, one be- 

 hind, below the latter no trace of a small bristle. Scutellum on its upper 

 surface more bristly than in the other species. Abdomen of the usual 

 color, apparently with a median narrow dark stripe. Legs black, claws 

 somewhat elongated, pulvilli short. Front tibia without a bristle on the 

 side away from the body, only ciliated with fine hairs ; middle tibia with 

 two on outer front, one on outer hind, three on inner front, the last on 

 the apical half, short but strong; hind femur on the lower outer edge with 

 about 8 bristles in the whole length, hind tibia with the usual bristles. 

 Wings dirty yellowish-gray, the base with whitish spots, all the veins strong, 

 especially the last third of the first vein, which is whitish just before this 

 part. Costal spine very small, no setules visible, both crossveins feebly 

 infuscated. Calypters very small, whitish with yellowish border, halteres 

 yellow. 



"Length about 8 mm. 



"The two specimens before me, which seem to be females, are from Mr. 

 Becker's collection and were taken at Miednaja on Bering Straits." 



The above is a translation of the entire description. I have 

 seen no specimens agreeing with it in regard to the cruciate 

 bristles. It may be inferred that the type specimens w^ere not 

 in good condition, as Stein was not sure of the sex. In many 

 details evermanm agrees, and must be a near relative, but has 

 so manv strons: characters not mentioned bv Stein that it w-ould 



