2-4 COSTA RICAN DIPTERA 



Cachi, March 9-10, 5 specimens; and 1 specimen from Turrucares, 

 December 19, 1909. 



Originally described from Panama. 



Sphaerocera pallipes Malloch 



191-4. Sphaerocera pallipes Malloch, Ent. News, xxv, 31. 



A single specimen taken at Turrucares, December 20, 1909, by 

 sweeping over mud of a small stream north of Rio Siquiares. 

 Agrees with the tj^pical description except that the third and 

 fourth veins are parallel. 



PHORIDAE 

 Dohrniphora setigera new species 



This species may be separated from venusta and its allies by 

 the following characters: 



Black, glossy; antennae and palpi yellow; abdomen opaque black; anal 

 protuberance yellow; legs yellow more or less obscured with brown. Hal- 

 teres black. Wings slightly infuscated at apex and along costa. 



There are 2 strong post-antennal bristles on frons; the arista is almost 

 bare; the palpi are broad and strongly bristled. The last abdominal seg- 

 ment has several strong posterior marginal bristles. The fore tibia has one 

 strong bristle at basal third and a series of short setulae (6-7) from a short 

 distance beyond it to apex; the hind tibia is bare except for a bristle at apex 

 on dorsal surface and a series of short postero-dorsal setulae. Wings' as in 

 venusta but the costal bristles are about three times the length of the costal 

 diameter. Length, 4 mm. 



Holotype. — Cartago, January 3, 1910, swept over mud. Tj^pe 

 No. 6036. 

 Dohrniphora venusta Coquillett 



1895. Phora venusta Coquillett, Can. Ent. xxvii, 107. 



There are a number of specimens referable to this species from 

 Cartago and Alajuela in the material before me. They average 

 both much larger and darker than specimens from the United 

 States and West Indies. 



NEODOHRNI PHORA new genus 



This genus may be distinguished from all the other genera in 

 the family by its possession of the following combination of char- 

 acters: Frons with 3 rows of 4 bristles each, the post-antemial 

 bristles being absent and their normal position occupied by the 

 central pair of first row; antennae enlarged, third joint subcorneal, 



