Vol. XXvi] ENTOMOLOGICAL NEWS 23 



77 Middle femora of male shortened, dark at base, their tibiae and 



tarsi very much elongated 78 



Middle femora normal 79 



78 Middle tarsi with the last three joints much flattened. (N. Y.) 



noveboraccnsis n. sp. 

 Middle tarsi plain. (Eastern States.) filipcs Loew 



79 Abdomen yellow at base above, thorax coppery or golden on the 



sides of the dorsum. (East U. S., W. I.) varicgatus Loew 



Abdomen not pale at base, thorax green, more bluish-green along 



the front. ( Cuba ) castiis Loew 



So Fore femora with slender erect bristles below. (U. S.) 



tcncr Loew 

 Fore femora without such bristles 81 



81 Hind margin of the pleurae yellow 82 



Hind margin of the pleurae green. (Mex.) mcxicanus Aid. 



82 Abdomen with basal yellow band, remainder green. (U. S.) 



unifasciatus Say 



Abdomen with the greater part of the first four segments yellow. 

 (U. S.) rotundiccps Aid. 



Sciapus dimidiatus Loew. 



I have seen seven males of this species from Arizona. The 

 tibiae were more brown than yellow, especially the hind ones ; 



the hyaline tip to the wing is not 

 over one-third the length of the 

 wm g' reaching just to the forking 

 of the fourth vein (Fig. i) ; the 

 tegulae are entirely black, instead 

 of being bordered with black, as 

 Loew states ; the outer appendages of the hypopygium are 

 pointed lamellae, and are of a blackish color with rather long 

 hairs on the inner edges. These differences are probably only 

 individual. 



Sciapus banksii n. sp. 



'Face with white hairs; antennae, cilia of the tegulae and middle and 

 hind coxae black; fore coxae and all the legs yellow; fifth joint of fore 

 and middle tarsi white; wings hyaline. Length 4 mm. 



$ . Face and front metallic green with yellowish brown pollen 

 which does not conceal the ground color; face with slender white hairs; 

 antennae black ; arista about two-thirds as long as the width of the 

 head. 



Thorax and abdomen metallic green, in some individuals more blue 

 green, except the posterior half of the abdomen, which is golden green; 



