Dlptera of St. Vincent (JVest Indies). 289 



brownish-yellow, the male organs more yellowish. Legs brownish 

 throughout, the tarsi finely pubescent. Wings nearly hyaline ; no 

 stigma. Length 3-4 mm. 



Twelve specimens. This and tlie following species 

 differ from the type of this orenus^ as described by Osten 

 Sacken, in the stracture of the antennae and in some 

 peculiarities of the neuration, but the differences will not 

 justify generic separation. Both species have distinct 

 empodia^ and there appears to be a minute spur on the 

 middle tibige. 



2. Atarha pleuralis, n. sp. (PL X., figs. 61, antenna; 

 61a, hj genitalia ; 61c, wing.) 



(^ , $ . Front yellow. Antennae and palpi blackish. Meso- 

 notum brownish-red ; the colour in shape of an elongated triangle, 

 the base of which is the scutellum ; the lateral margins of the 

 raesonotum show a slender, dark-brown stripe ; immediately below 

 which the colour is light yellow, extending over the dorso-pleural 

 suture. Pleurae dark-brown, with a longitudinal stripe above the 

 base of the coxse ; or, the pleurse may be otherwise described as 

 having two dark brown stripes enclosing a light yellow one. 

 Abdomen brownish-red, with a narrow, dark-brown band on the 

 posterior margin of each segment, and with a median, indistinct 

 brownish stripe. Coxse light yellow ; femora yellow, with a 

 brown ring just before the light yellow tip, whichi colour ex- 

 tends narrowly on the base of the tibiae ; tibiae and tarsi brown. 

 Wings tinged with brown ; stigma dark-brown ; the marginal cell 

 is shorter and wider than in A.jnceUa. Lenj^th 4-5 mm. 



Six specimens. 



Teucholabis. 



Osten Sacken, Proc. Acad. Nat. Sci. Phil., 1859. 



]. Teucholabis complexa, (PL X., fig. 62, wing.) 



Teucholahv; complexa, Osten Sacken, Proc. Acad. Nat. 

 Sci. Phil., 223, 1S59; Monogr., etc., iv., 129. 



Hah. District of Columbia; New York ; Illinois. 



Sixteen specimens. The description of this species 

 applies so well to these specimens that there can be but 

 little doubt of the identification. The brown stripes of the 

 mesonotum are only feebly indicated in most of the speci- 

 mens ; the posterior part of the abdominal segments is 

 yellow, and the tibiae are brownish. 



