NO. 1938. THE DIPTEROUS FAMILY PHORIDJE—MALLOCH. 427 



spine on the postero-dorsal and one on the antero-ventral surface at 

 the middle, and one at the basal and one at the apical third on the 

 antero-dorsal surface as well as two long end spurs." 



Besides the type of comstocJci from Ithaca, New York, there are two 

 specimens "from clean bones of turtle," Plummers Island Maryland 

 (Barber). 



PARASPINIPHORA TRISPINOSA, new species. 

 Plate 35, fig. 2. 



This species closely resembles the above but it is smaller, darker, 

 and distinctly shining; has only one pair of dorso-central thoracic 

 bristles; has the front pair of scutellar bristles but little weaker than 

 the posterior; the second and sixth abdominal segments prolonged, 

 the former with several rather short lateral bristles and the latter 

 with a fringe of long, apical bristles; the fore and mid tibise are 

 bristled as in hergenstammi, but the hind tibia has only one spine at 

 the basal third and one at near the apex on the antero-dorsal sur- 

 face, one spine at the middle on the antero-ventral surface, and 

 two apical spurs; the costa reaches short of the middle of the wing 

 (in hergenstammi to fully the middle) and the fork of the third vein 

 is more abrupt than in hergenstammi, causing the third section of the 

 costa to be nearly equal to the second instead of only half the length 

 as in Becker's figure and Aldrich's type of comstocki; the costal 

 fringe is also longer than in hergenstammi being twice the length of 

 the diameter of the costa. 



There is only one male in the collection from Kaslo, British Colum- 

 bia, June 22, 1903 (R. P. Currie). 



Type.— Cat. No. 14826, U.S.N.M. 



PARASPINIPHORA EXCISA Becker. 



This species has not been taken in America so far as I am aware. 

 Besides the characters used in the table, it may be known by having 

 the first section of the costa hardly longer than the second, the costa, 

 which is short fringed, reaches to beyond the middle of the wing. 



PARASPINIPHORA BOHEMANNI Becker. 



This species, which was described from the female only, I have 

 never seen, but the position of the bristles on the hmd tibia ought 

 to distinguish it. The costa does not reach the middle of the wing, 

 and the first section is about twice as long as the remaining part. 

 Not recorded for America. 



