228 Fiftieth Report on the State Museum 



specimens hardly discernible; pleura yellow; wings hyaline, iridescent, 

 anterior veins fuscous, the lighter veins brown ; knob of halteres fuscous 

 with yellowish tip, pedicel yellowish; tip of trochanter black; 

 coxa and femur dull yellow; tibia darker; tarsi fuscous apically ; 

 abdomen fuscous except the yellow terminal segment bearing the large 

 ochreous claspers which are tipped with fuscous. 



Antennae barely as long as head and thorax ; first segment cuboidal, 

 second globose, third about one-fourth longer than the following; fourth 

 to terminal one are nearly cylindrical, the proximal ones slightly gibbous 

 and not twice as long as thick, length of distal ones about twice their 

 thickness. Palpi ; the small basal segment was not seen ; the second is 

 flattened, narrow at its base and is broadly oval distally, nearly equal 

 to subsequent segments in length; third suboval, nearly equal to 

 last; terminal segment rectangular in outline, about one-fourth longer 

 than wide ; each with a few scattering large setse and numerous minute 

 ones, which on the last segments have somewhat of a verticillate 

 arrangement. 



Dorsum of thorax invested with a number of large scattering hiirs. 

 Wings; subcosta (ist longitudinal) indistinct, short; first branch of 

 radius (2nd longitudinal) joined before its middle by the short cross-vein 

 to the second branch (3rd longitudinal), and uniting with costa be- 

 yond the middle of the wing and about on a level with the fork of 

 media (4th & 5th longitudinals); tip of second branch of radius and 

 media about equidistant from the apex of the wing; the second branch 

 of media (5th longitudinal) and the two branches of cubitus (6th & 7th 

 longitudinals) about equidistant on the border of the wing. Anal vein 

 (8th longitudinal) about one-third the length of the second branch of 

 cubitus (PI. VI, fig. 7). Fore coxa about three-fourths the length of either 

 femur or tibia ; tarsi longer, first segment not so long as the remaining 

 ones; middle legs about the same; posterior tibia about one-fifth longer 

 than the slightly elongated femur, first segment of tarsi equal to the 

 remaining one?. 



Abdomen with numerous stout setae. The enlarged terminal segment 

 more thickly clothed with setae and bearing large, subtriangular claspers 

 (PL VI, fig. 13). 



Length of body 4 mm., of wing 2.75 mm. Female unknown. 



Phora albidihalteris n. sp,* 



A Mushroom Phora. 



(Ord. DiPTERA : Fam. Phorid^.) 



This insect was reared in numbers by Dr. J. B. Smith, from mushrooms. 

 It is believed to be another form .new to science and is herewith described. 



Phora albidihalteris. — Head and thorax jet black; palpi orange 

 yellow ; abdomen black in some specimens, in others the lateral margins 

 and dorsum of terminal segments are dull yellow; wings hyaline, irides- 

 cent, heavy veins ochreous; capitulum of halteres yellowish white; legs 

 a variable ochreous with the terminal segments darker. 



*By E. p. Felt, D. Sc 



