266 THE CANADIAN ENTOMOLOGIST. 



in colour) in this and Xxxxt floridana is described as being without black, 

 in both there are a very few black hairs, which can be seen if looked for. 

 This is not true, however, of the males. 



The known males of Emphoropsis similar to floridana may be 

 separated thus : 



Hair of thorax above with black conspicuously intermixed i. 



Hair of thorax above without black intermixed 2. 



1. Hair of abdomen beneath all black ; scape entirely black 



(Calif) ifiterspersa, Ckll, 



Hair of abdomen beneath largely pallid, at least in certain lights; scape 

 white in front (Calif) semi/u/va, Ckll. 



2. Scape white or yellowish in front (Colo.) Morrisoni (Cresson). 



Scape all black 3. 



3. Hair of occiput black ; spurs yellowish- 



white floridana Fedoreusis, Ckll. 



Hair of occiput light ; spurs dark floridana (Sm.). 



Xenoglossa stremca (Cresson). 

 The Fedor insect is the typical red-legged form, not the dark-legged 

 var. Kansensis, Ckll., which Snow obtains in Kansas, 



Melissodes vielajioioma, n. sp. 

 ^. — Length just over 12 mm.; black, pubescence entirely black, 

 except on the face, labrum, part of occiput, outer side of all the tarsi and 

 of hind and apical half of middle tibiae, where it is white ; wings dark 

 fuliginous; clypeus light lemon yellow, with the usual black spot on each 

 side; labrum dull whitish, the ''lateral margins black; flagellum ferrugi- 

 nous beneath, except apical half of last joint. Agrees with M. bimaculata, 

 Lep., except in having the spurs piceous, and the hair of thorax and 

 abdomen wholly black, above and below ; it is also a little larger than 

 bimaculata. It may prove to be only subspecifically distinct, as 

 bimaculata itself is quite variable. 



Hab. — Fedor, Texas, May 26, 1904 (Birkmann). The males of 

 the black melissodes of the bimaculata group may be separated thus : 

 Clypeus entirely black ; abdomen and legs without white 



hair (Mexico) pernigra, Ckll. 



Clypeus black with a semicircular yellow spot or patch ; 



abdomen with some white pubescence (Mexico)., .airata, Smith. 



Clypeus yellow, Avith a black dot on each side ; hind legs with much 



white hair i. 



