312 THE CANADIAN ENTOMOLOGIST 



CANADIAN SPECIES OF THE BEE (iENUS 

 STELIS PANZ. 



n\ F. W. L. SLADEN, OTTAWA, 



(The figures before names refer to species in the Canadian National 



Collection.) 



Females. 



1. Skin colour black .2. 



Skin colour bronzy 6. 



2. Pale spot behind eye and pale line on inner margin of eye, last 



ventral segment of abdomen wide and rounded, and projecting 

 far beyond last dorsal segment, which is angulated; length 

 5 mm. 

 subg. Stelidium R(jbt., lOGO, onlariana, n. sp. 



(? — trypetinum Robt.) 

 Ottawa, 16, VIII. 



One specimen, j. I. Beaulne, 1912. 

 No pale markings on head 3. 



3. Al)dominal segments 1 and 2 or 1 to 3 or 4 with a small lateral 



spot, segments 4 and 5 often with two small inner spots, 

 abdomen so closely punctured as to appear somewhat dull; 

 length o mm. 



subg Micros! elis, 1061 lateralis Cr. 

 Ottawa, \'II. 

 Segments with pale bands, more or less interrupted; abdomen 

 less closeh' punctured, 

 subg C/ieiynia Prov. .4. 



4. Last dorsal segment with longitudinal ridge on apical portion: 



last ventral segment tridentate beyond apex of dorsum, the 



middle tooth long and acuminate 1062, rubri Ckll. 



Banff, Alta , 25. VI 

 Apex of abdomen without these structures 5. 



5. Abdomen elongate, pale bands all about equally interrupted in 



the middle, last ventral segment projects well beyond last 

 dorsal segment, last dorsal segment with g(;lden pubescence 



on margin, sting slender and pale 1063 siibemari^inata Cr. 



Abdomen rather broad, pale bands usually more widely inter- 

 rupted on basal segments than on apical segments, last 



September, lOKi 



