ART. 1 NEW DIPTERA FROM SOUTH AMERICA ALDRICH 17 



Female. — ^Front at vortex .34 of headwidth, uniformly widening 

 toward the mouth. Pollen of parafrontal and parafacial with a 

 slight tinge of yellow. 



Abdomen with a pronounced keel below on the second and third 

 segments with a good sized curved piercer folded in, the edge of 

 the keel in the third segment bears a series of very short but stout 

 spinules not very noticeable ; second segment with a very few spinules 

 almost imperceptible. Dorsally the last three segments of the abdo- 

 men are pretty well covered with pollen which is yellowish on the 

 fourth segment; the tip of the fourth segment and a large indis- 

 tinct subtriangular area on the sides of the second and third are more 

 shining black. The pollen becomes thinner at the margin so that 

 the venter is almost shining. 



Length, male 6.4 to 6.7 mm. ; female, 5.5 to 6 mm. 



Described from eight males and seven females. Four males includ- 

 ing the type, and one female and allotype, are from Angol, Chile, 

 collected in October and December, 1925, by D. S. Bullock ; two males 

 and four females from southern Chile (M. J. Rivers), one labeled, 

 " Parasite of Plusia depauperata " ; one male from Perales, Chile, 

 September, 1923, collected by Alfredo Faz ; one male from Calamarca, 

 Argentina, swept from chrysanthemums by Max Kisliuk, May 23, 

 1927: one female from La Laoija, Argentina, June, 1927, swept in 

 orchard by Max Kisliuk; and one female from Dolores, Buenos 

 Aires, Argentina, March 29, 1927, swept in orchard by Max Kisliuk. 



Four additional specimens are in the Edwards collection from 

 Chile (British Museum) — a male from Llai Llai (a very small village 

 2 miles from Los Loros), a female from Los Andes, two males from 

 Ancud and Puntra in S. Chiloe. 



Shannon collected two males at Los Loros, Chile. 



Ty^e.— Male, Cat. No. 40836 U.S.N.M. 



REEDIA, new genus 



Related to Peleteiia., but without palpi and with the bristles very 

 strongly developed, those of scutellum and of abdomen above and 

 below are straight and spine like. Chaetotaxy, head : vertical 2 large 

 pairs; ocellar well developed, proclinate; orbital in female 3 (upper- 

 most smaller) ; frontals about 11, the upper 2 reclinate and diverg- 

 ing, remainder converging toward middle line, lowest near eye at 

 level of middle of second antennal joint. Thorax: acrostichal 2, 3 

 (none just before suture) ; dorsocentral 3, 4; humeral 7; posthumeral 

 2; presutural 2; notopleural 2; supraalar 3 very strong; intraalar 3; 

 postalar 2 large and 2 small ; sternopleural 2, 1 ; pteropleural 2 large ; 

 scutellum with 2 large laterals and a smaller diverging depressed 



