236 EDWARD NORTON. 



second and third each with a recurrent nervure as in Strongj/Uxjaatcr. 

 but in other respects it does not vary from the above. 



4. D. coUaris. 



Doleras coUarls, Say, West. Quart. Rep. II, 182.3, 72, J. 

 Dosytheus coUaris, Norton, Bost. Proc. viii, 151, 2. 

 "Black; thorax rufous before." Length 0.32 — 0.36. Br. wings O.eti — 0.7-t 

 incli. 



9. Abdomen stout, flattened, acuminate; antenna short, as in IJ. 

 sei'iceus, as also the punctures ; color shining black ; the tegulae, ante- 

 rior lobe of mesothorax, anterior angle, more or less of breast before 

 anterior legs and a triangle on upper corner of pleura yellow-red ; legs 

 the color of body ; wings varying from subviolaceous to hyaline. 



Var. a. The whole upper half of pleura and sutures near the scutol 

 rufous. 



Var. h. Pleura almost entirely black. 



Maine, Connecticut, Illinois, Missouri, (Say). April 24th. 

 No males taken. (22 9 )• 



.0. D. aprilis. 



Dosytheus aprilis, Norton, Bost. Proc. viii, 1861, 1.52, 4, 9 '^ • 



Black; a wide rufous band on abdomen. Length 0.30 — 0.38. Br. wingn 0.60 

 —0.70 inch. 



9 . Body rather stout; antenna; moderate, third joint nearly as long 

 as fourth and fifth together; fourth, fifth and sixth nearly equal ; head 

 nearly as wide as thorax ; nasus deeply notched ; abdomen rufous, the 

 basal plates, apical half of sixth and the two apical segments black ; 

 legs black, the anterior pair of tibiae and all the tarsi more or less fer- 

 ruginous ; lower half of face, and of pleura and tibi;i3 covered with 

 white hair ; claws with an obtuse inner tooth; wings faintly clouded, 

 uervures blackish. 



% . The male has more pubescence upon the face and pleura ; the 

 third joint of antennas not so long as in 9 and sometimes more than tlu; 

 three apical segments of abdomen black, especially beneath. 



Maine. Connecticut, New Jersey, New York, Maryland, Mackenzie 

 liiver, Hudson's Bay Territory. 



A great many specimens taken in April on the .Salix vitelliua. 



6. D. apricus. 



Dolerus apricus, Say, Harris' Cat. 



Dosijthcas apricus, Norton, Bost. Proc. viii, ISiil, 1,52, ."., 9 %■ 

 Black ; a wide band on femora and most part of leg:; rufous. Length 0.25 — 

 O.oO. Br. wings 0.50—0.60 inch. 



9 . Not SO large as I), aprilis, body stout ; autennjic moderate, third 

 joint one-third longer than fourth^ punctures of head and body not si.> 



