NO. 1938. THE DIPTEROUS FAMILY PHORIDM—MALLOCH. 433 



is really a distinct species. Two specimens, male and female Cabima, 

 Panama, May 11 CBusck). 



Ty pe.—C&t. No. 14830, U.S.N.M. 



Genus HYPOCERA Lioy. 



TABLE OP SPECIES. 



1. First vein remarkably swollen at tip and prolonged to tip of third vein; seventh 



vein obsolete; two scutellar bristles difformis, p. 433. 



First vein not remarkably swollen ending clear of third 2. 



2. Vertex semicircularly elevated and sharp above 3, 



Vertex not so raised 4. 



3. Antennae and palpi black coronata, p. 434. 



Antennae and palpi yellow johnsoni, p. 434. 



4. Ocellar triangle raised, hump-like 5. 



Ocellar triangle not raised 7. 



5. Third joint of antennae yellow bemuthi, p. 434. 



Third joint of antennae black 6. 



6. Fore tibia with a serial row of two to four spines incrassata, p. 434. 



Fore tibia with one spine carinifrons, p. 434. 



7. Third vein with four to five strong bristles at base, subapical spine on mid tibia 



at apical third mordellaria, p. 434. 



Third vein with only one strong bristle at base, or the bristels hair-like, or the 

 whole vein short haired , the subapical spine on mid tibia at near apex 8. 



8. Hind tibia with one or more spines, other than those at apex 9. 



Hind tibia without spines, except at apex 13. 



9. Costa very thick, wings long and narrow, thin veins straight execpt at extreme 



apex convergens, p. 435. 



Costa not remarkably thick, fourth vein curved at base .' 10. 



10. Small species, about 1^ mm. or less 11. 



Larger species, at least 2.5 mm 12. 



11. Entirely black species, generally the front tibia only piceoua, wings limpid. 



vitripennis, p. 434. 

 Thorax and abdomen more or less yellowish, legs yellow; wings hyaline. 



grenadensis, p. 434. 



12. Antennae and palpi black flavimana, p. 434. 



Antennae and palpi yellowish clavata, p. 435. 



13. Small black species, 1 J-2 mm citreiformis, p. 435. 



Large species, 3§ mm., hind tibia flattened dorsally and with numerous transverse 



rows of short black bristles 14. 



14. Yellow species rectangulata, p. 512. 



Deep black species ., ehrmanni, p. 435. 



The somewhat aberrant species agilis Meigen has been placed in the 

 genus by Brues,^ but, so far as I can see, it can hardly be included, 

 as the fork of the third vein is sometimes distinct. It does not occur 

 in America. 



HYPOCERA DIFFORMIS Brues. 



Tliis is described from New Guinea. Type in the National Museum 

 of Hungary. 



1 Gen. Ins., p. 6. 

 48702°— Proc.N.M. vol.43— 12 28 



