394 ENTOMOLOGICAL NEWS [Nov., 'l2 



Allotype. $ topotypic. 



Paratype. $ topotypic. 



Distinguished from the next species by the wings being hya- 

 line with brown bands, the abdomen gradually expanding in 

 width ; the third segment much shorter ; also in its much larger 

 size. 



Syringogaster brunnea n. sp. 



Dark rufous or brown. Front and face subopake, latter more 

 yellow, with orbits and cheeks silvery, latter narrow. Antennae yel- 

 low, more or less rufous. Mesonotum subopake or reddish, becoming 

 black in the sutures; scutellum concolorous; pleurae concolorous, 

 polished, becoming black at bases of middle and posterior coxae. 

 Halteres whitish. Base of first abdominal segment subopake, becom- 

 ing polished apically; fourth to sixth segments subopake, nearly 

 black; apices of second and third black. Fore coxae whitish; femora, 

 tibiae and tarsi and middle legs entirely, yellow ; posterior coxae and 

 tarsi, yellow ; posterior femora translucent rufous, yellow basally 

 and a black spot above at basal third ; tibiae dark ; lateral series of 

 spines extending nearly to base of femora. Wings brown, with base, 

 and 3 transverse bands hyaline, first an incomplete band crossing 

 apex of first basal and base of discal cells; second, at basal-fourth 

 of first posterior and apical fourth of discal ; third, beyond posterior 

 cross-vein, extending into first posterior cell ; these bands all in- 

 complete, not attaining costa, clear hyaline or whitish, becoming in- 

 distinct towards the lighter posterior margin of wing. 



Front more than one-third width of head. Antennae extending be- 

 yond middle of face. First and second segments narrow, suddenly 

 dilating at posterior third ; third segment about one-third as long 

 as first and second together ; fourth, half as long as third ; fifth and 

 sixth, small. Fifth and sixth veins not attaining margin of wing, 

 former extending but little beyond cross-vein. Length 4.5 mm. 



Type Locality. Peralta Station, Costa Rica. 



Holotype. 9 Collected Aug. 10, 1909, (P. P. Calvert). In 

 the collection at the Acad. Nat. Sci., Phila. No. 5253. 



Paratype. 5 Juan Vinas, Costa Rica, near brook on edge 

 of forest, 2500 feet altitude. May. (P. P. Calvert). 



Differs from rnfa in its smaller size, darker color, narrow- 

 ness of first abdominal segment, and the abrupt dilatation of 

 the second; third segment longer in proportion; the wings are 

 evenly infuscated with hyaline maculations. 



