June, 1914.] Diptera of Middle America. 339 



and one before the scutellum; wing largely hyaline and brown, 

 base largely hyaline, anterior border pale yellowish, first basal 

 cell \^dth a small oblique dark marking; a large dark marking at 

 stigma sending out three prominent extensions, one backward 

 along the veins which close the second basal and anal cells, another 

 obliquely along the vein which separates the second and third 

 posterior cells and one outward along the costa. The first second 

 and third posterior cells also have more or less dark color at 

 their apexes. Legs dark with the exception of the apical two- 

 thirds of each front femur and all the tarsi which are pale. 

 Abdomen very dark shining green. Type female from Bartica, 

 British Guiana, collected by H. S. Parish. 



Volucella macula Wiedemann. General color metallic red- 

 dish, wings nearly hxaline with a well defined quadrate black spot 

 near the middle of the costal border. Length !) mm. Four 

 specimens from Rartica. British Guiana. 



Volucella obesa Fabricus. This is the most common species of 

 the genus in middle America. Body shining green, wings nearly 

 hyaline with a black stiginatic spot and a black point at the apex 

 of the marginal cell. Length 12 mm. one specimen a little smaller. 

 Our collection contains specimens from Mexico, Cuba, Guatemala, 

 Honduras, British Guiana and Bolivia. 



Volucella perlata n. sp. Face and front bright shining green. 

 Thorax bright green, scutellum and abdomen pale with shining 

 irridescent reflections, wings yellowish, more intense on apical 

 half. Length 9 mm. 



Face produced largely downward, green, and obscure yellow 

 markings on the cheek, antenna including the arista yellow, eyes 

 hairy. Thorax green, scutellum pale with an apical depression, 

 three weak bristles on each side: legs dark with purplish or green- 

 ish reflections, knees pale; wings yellowish, most intense in the 

 marginal and first second and third posterior cells. Abdomen 

 pale with a very bright, shining irridescent reflection. Type male 

 taken at Los Amates, Guatemala. 



Volucella picta Wiedemann. Very close to fasciata and 

 pusilla from the United States. In fact Williston suggests that 

 the latter may be a synonym of picta. Length S mm. Speci- 

 mens from Gualan, Guatemala. The larva probably lives in the 

 stems of some species of cactus. 



Volucella praescutellaris Williston. A modest colored species. 

 Dorsum of th<jrax green with \x'llow and black pile intermixed, 

 scutellum pale, a row of prescutellar bristles and eight rather 

 strong bristles on the posterior border of the scutellum; wings 

 infuscated, not quite so dark on posterior border; legs black; ab- 

 domen yellow and brown, the tip shining. Length between 11 and 

 12 mm. A male specimen from Los Amates, Guatemala. 



