202 THE CANADIAN ENTOMOLOGIST. 



longer than face, and with second and third joints nearly equal in length. 

 The face is not more than three-fifths the length of antennae. It agrees 

 perfectly in the wings with Williston's description of belhda, and not at all 

 with ititida ; therefore I place it here. The antennae are brown, with first 

 two joints tinged with yellowish. The disk of abdomen is pronouncedly 

 opaque blackish, but with some cupreous and green. The face is quite 

 rugose and the epistoma is hardly produced downwards. I am unable to 

 restore the markings of the eyes, doubtless because the specimen was 

 originally an alcoholic one, and therefore cannot say toward which species 

 it inclines in the pattern of the eye-picture. (See Williston, Biol. C. A. Dipt., 

 Ill, p. 7.) 



66. Volucella ohesa Fab. 



Tepic. — Two specimens, cf 9 , Oct. 



Length, 10 to 11 mm. Metallic green. The third antennal joint is 

 only moderately short in the 9 ) and hardly shorter in the cf • 



67. Volucella dichroica G.-Tos. 



. Tepic. — One 9 I consider as this species. Oct. 

 The face is strongly conically prcjected below, ending in two teeth 

 formed by a median longitudinal notch in the apex of the cone, and I 

 should hardly call it obtuse. The scutellum is not reddish-coppery 

 (rosso-raftie), but of the same greenish-violaceous colour as the thorax and 

 abdomen. The metatarsi and next two joints, especially in the hind legs, 

 are pale brownish-yellowish, as are also bases of antennae. Otherwise it 

 agrees well with Giglio-Tos' description. The brownish spot at distal end 

 of submarginal cell is subobsolete, and a similar cloud is apparent on last 

 section of fourth vein at distal end of apical cell, and along last section of 

 third vein. There are bristles on the edge of the scutellum, and the eyes 

 are hairy, both of which characters are unmentioned by Giglio-Tos. 



The specimen agrees well with the more important characters in 

 Williston's description of V. viridis, from Chapada, Brazil, except that 

 the 9 front is not of equal width, but is very noticeably widened anterior- 

 ly. While the marginal cell is short petiolate, the legs are more luteous 

 than in Giglio-Tos' specimen, yet their prevailing colour is black. In the 

 colour of the scutellum it agrees better with viridis, and it possesses the 

 ciliate-like pile of femora and tibiae. These two species must be very 

 closely allied. 



