J. R. MALLOCH 31 



front of wing tip; costal fringe about twice the length of costal diameter, 

 regular and close. Length, 2 una. 



Holotype. — Juan Vinas, May 2, 1910, forest brook, .3300 feet 

 altitude. Tj-pc No. 604.3. 



Aphiochaeta flavopleura new species 



Female. — Shining brownish yellow. Frons glossy dark brownish; an- 

 tennae j^ellowish; palpi yellow. Pleura pale yellow, becoming darker on 

 upper third. Abdomen opaque dark brown. Legs yellow, the posterior 

 pair slightly obscured with brown. Wings with a slight yellow tinge, veins 

 brown. Halteres black-brown. 



Frons with distinct central furrow; lower pair of post-antennal bristles 

 about half as large as the strong upper pair; central pair of bristles in first 

 row incurved, situated in transverse line with the upper post-antennals 

 and almost directly in vertical line with the outer pair in same row; surface 

 hairs not so close and larger than in sylvicola; antennae normal; arista 

 pubescent, distinctly longer than frons; palpi narrow, the bristles rather 

 numerous and strong. Mesopleura bare; scutellum with 2 bristles. Ab- 

 domen slender, second segment without distinct bristles. Legs normal; 

 hind tibia without distinct setulae. Wings with costa to beyond middle, 

 first division slightly shorter than second; angle at apex of first vein acute; 

 angle at fork obtuse, almost a right angle; fourth vein leaving at beyond 

 fork with a slight bend and ending, recurved, at well in front of wing tij); 

 costal fringe about 4 times as long as costal diameter. Length, L.5 mm. 



Holotype.— 9 , Rio Siquiares, Turrucare.';, December 19, 1909. 

 Type No. 6044. 



Paratype. — Alajuela, September 8. 1909, sweeping ovtn- brook, 

 3100 feet altitude. 



Aphiochaeta latimanus new species 



Maie.— Black-brown shining. Frons glossy, almost black; palpi brown. 

 Pleura yellowish brown, shining. Abdomen opaque, black. Legs brown- 

 ish yellow. Wings slightly grayish, veins heavy, brown. Halteres black - 

 brown. 



Frons with distinct central furrow; lower pair of post-antennal bristles 

 almost as large as upper pair; central pair of bristles in first row slightly 

 below upper post-antennals and well below the outer pair in same row 

 though not nearly in vertical line with these; surface hairs on frons rather 

 long: antennae small; arista pubescent, distinctly longer than frons; palpi 

 larger than antennae, strongly bristled. Mesoi)leura with numerous short 

 bristles; scutellum poorly preserved but with 2 bristles remaining. Ab- 

 domen tapering, second segment without distinct bristles, surface of all 

 segments slightly haired; anal protuberance not large. Legs with fore tar- 

 sus flattened, joints 2 and 3 subequal, both together shorter than metatar- 

 sus, ivnd equal to joint 4 which is subequal with 5; hind tibial setulae distinct 



TR.\NS. AM. ENT. SOC, XL. 



