46 Psyche [February 



abdomen. Halteres dark brown. Legs: coxae and trochanters light yellow; 

 femora light yellow, the apice broadly dark brown; tibia and tarsi brownish-black. 

 Wings, sub hyaline, with a distinct dusky tinge; stigma round, brown, its posterior 

 margin not touching R 2+ 3. Venation: Sc rather long, that portion beyond the 

 origin of Rs slightly longer than cell 1st M 2 (discal) ; cross-vein r close to the tip of 

 Ri; space on R 2+3 before/ - , as long as the basal deflection of Cui; cell 1st M 2 very 

 elongated, narrowed anteriorly; outer deflection of M 3 longer than cross- vein m 

 (these two components making up the distal end of cell 1st Ms); basal deflection 

 of Cui slightly beyond the fork of M. 



Abdomen: dark brown, not at all with metallic reflexions; two basal sternites 

 yellowish. 



Holotype, d 1 , Aguna, Guatemala, Central America (Dr. G. Eisen, coll.) 



Type in U. S. Xat. Mus. coll. (No. 15,125), 



T. pleuralis is closest to chalybeiventris Loew 1 from the island of 

 Cuba; it differs in its lack of metallic reflexions on the head and 

 abdomen; pro thorax yellow, not brownish; mesothorax with a con- 

 spicuous pleural stripe; femora not brownish-black except at the 

 extreme tip; wings not pure hyaline, but distinctly suffused with 

 darker. It is even more closely akin to the specimen which Willis- 

 ton 2 doubtfully referred to chalybeiventris, but no mention is made, 

 in this description, of a pleural stripe. It is very probably the 

 same species; Williston's specimen was from Cuernavaca, Morelos, 

 Mexico. 



Teucholabis parishi sp. nov. 



Wings unhanded; color light yellow throughout; venation not like typical 

 Teucholabis. 



d Length, 5.2 mm.; wing, 4.1 mm. 



Middle leg, femora, 2.6 mm.; tibia, 2.5 mm. 



Hind leg, " 3.4 mm.; " 3.5 mm. 



(Alcoholic) d. 



Head: rostrum very short, pale; palpi also very short, the segments subequal, 

 only about tw T ice as long as broad, pale yellow. Antennae, 10-segmented, segments 

 1 and 2 short, the second only a little more globular than the third, light yellowish ; 

 the apical segments apparently paler. Front broad; broader than the diameter 

 of one eye; ommatidia of the eye large, coarse. 



Thorax: light yellow, mesonotal praescutum with darker, orange, stripes (pos- 

 sibly brown in dry fresh specimens); the middle stripe is double, begins at the 

 cephalic margin of the sclerite, ends just before the suture; the lateral stripes begin 

 just behind the pseudo-sutural fovea, run caudad, crossing the suture, on the 

 scutum represented by two spots on each lobe, the posterior one triangular; post- 



'Loew; Wiener Entomol. Monatschr.; vol. 5, no. 2; p. 33, 34. (Feb. 186l) (Rhamphidia) 

 2 Williston; Biologia Centrali-Americana; Diptera, vol. 1, supplement; p. 226 (Dec. 1900). 



