BOLETINA. 33 



with the cubital by a veinlet wliich is a little beyond the base of the 

 subapical vein ; cubital joining the costal near the tip of the latter; 

 subapical and subanal slight, the former forked near its base. Halteres 

 testaceous, with black knobs. Abdomen testaceous at the tip. Legs 

 testaceous ; trochanters partly black ; spurs long ; tarsi blackish, minntely 

 setose beneath. 

 Bare. (E.) 



Genus V. BOLETINA. 



BoLETiNA, Stseg. D. D. (1840) ; Zett. Mijcdopldla p., Meig. Leia p., 

 Meig. Leptomorphns p., Walk. 



Corpus gracile. Oeuli ovati. Ocelli tres, intermedius niinimns. Palpi 

 arcuati, 4-articulati. Antenna? graciles, filiformes, subcoraprcssa?, 

 fere nudte, 16-articulata3. Thorax brevis. ^</te sat lata? ; vena sub- 

 costalis cost(e dimuliuin fere attbigens, cubitaUs e venuUs transversis 

 areolce prt^brachlalis orta. Abdomen longuni, gracile, basim versus 

 siibcontr actum. Pedes graciles. 



Body slender. Eyes oval. Ocelli 3, the middle one very small. 

 Proboscis slightly elongated. Palpi curved, four-jointed. Antenna; 

 slender, filiform, slightly compressed, nearly bare, sixteen-joiuted. 

 Thorax short. Wings moderately broad ; costal vein ending at hardly 

 in front of the tip of the wing ; subcostal nearly half the length of the 

 wing ; radial ending at a little before five-sixths of the length; cubital 

 joining the tip of the costal, springing from the angle formed by the 

 transverse veinlets which close the praibrachial areolet ; subapical and 

 subanal veins forked or simple ; anal vein distinct. Halteres rather 

 short. Abdomen long and slender, someiohat straitened towards the 

 base. Legs slender, ratiier long ; tibite beset by a few very minute 

 bristles ; spurs moderately long. Male. Antennae about twice the 

 length of the thorax. Abdomen cylindrical. 'Fern. Antennse hardly 

 longer than the thorax. Abdomen subfusiform. 



The BoleliiMi frequent woods, and in their habits raucli resemble 

 the MijcelophlUe, but differ in their more slender structure, and iu 

 the greater length of the subcostal vein. G no ride is nearly allied 

 to tliem, but is distinguished by the length of its proboscis. 

 Synopsis of the species : — 



a. Subapical vein and subanal vein forked. 



b. Forks of the veins at an equal distance fi'om the base of the wing. 

 b b. Pork of the subanal vein nearer than the fork of the sul)apical 



to the base of the wing. Species 1-3. 

 b b b. Pork of the subanal vein further than the fork of the subapical 

 from the base of the wing. Species 4. 

 a a. Subapical vein not forked. Species 5. 

 a a a. Subapical vein and subanal vein not forked. 



VOL. IV. F 



