NO. 1938. THE DIPTEROUS FAMILY PHORIDM—MALLOCH. 435 



Localities. — Mount Washington, New Hampshire (Mrs. Slosson); 

 White Mountains (Morrison); Washington, District of Columbia 

 (W. L. McAtee) ; Beverly, Massachusetts (Burgess) ; Mount Katahdin, 

 Maine, August 19, 1902 (no collector's name). 



HYPOCERA CLAVATA, Loew. 



There is standing in the collection two specimens from Beverly, 

 Massachusetts (Burgess), one of which bears the label P. mordeUaria 

 Fallen (Coquillett) . These specimens may be the true clavata Loew. 

 The palpi are much broader and clear yellow without any distinct 

 bristles, but the antennae are not yellow, being brown. I can not 

 reconcile these with the rather unsatisfactory descriptions I have of 

 clavata, but consider them as more probably representing that 

 described by Loew. It certainly is not flavimana Meigen, and if not 

 identical with Loew's species is an undescribed one. 



HYPOCERA CITREIFORMIS Becker. 



This is not recorded from America. 



HYPOCERA RECTANGULATA, new species. 



See description among exotic species, (p. 512). 



HYPOCERA EHRMANNI Brues. 



A very distinct species represented in the collection by the type- 

 specimen from Pittsburgh, Pennsylvania, and three males from 

 Plummers Island, Maryland. The species was described from a 

 female and Brues had some doubt as to its distinction from johnsoni. 

 They are, however, quite distinct. I have seen a male of this species 

 from Fort Erie, Ontario (Van Duzee), which, like two of those from 

 Plummers Island, has the antennae and palpi black. 



HYPOCERA CONVERGENS, new species. 



Male. — Black: frons shining, as long as wide, both frontal bristles 

 and arista rubbed off so that it is impossible to indicate their character; 

 antennae brown, third joint very large, pear-shaped, distinctly pointed 

 at apex, palpi small, brown, moderately strongly bristled, thorax 

 shining, four scutellar bristles, anterior pair rather weaker than pos- 

 terior pair; abdomen rather short but unlike most of the species 

 narrow, second segment not much elongated, hind margins of seg- 

 ments narrowly yellowish, the sixth more broadly so, dorsum dis- 

 tinctly gray-dusted, except on lateral margins, hypopygium large, 

 shining brown, paler below, a flap-like organ on left side low down 

 darker than upper portion and covered with very short pale pubes- 

 cence, anal organ retracted, legs yellow, the coxae and all femora 

 except bases and extreme apices brown, fore tibiae with a rather short 

 spine at above the middle, a longer one below middle and a series of 

 short setulae on antero-dorsal surface, mid tibiae with the usual two 



