THE CANADIAN ENTOMOLOGIST 



205 



CHARACTERS SEPARATING THE SPECIES OF THE BEE 

 GENUS CCELIOXYS OCCURRING IN ONTARIO. 



BY F. W. L. SLADEN, 



Apiarist, Central Experimental Farm, Ottawa. 



(The author has availed himself of a kind offer made by Prof. 

 T. D. A. Cockerell to look over any tables of bees he had pre- 

 pared. Prof. Cockerell's valuable notes are followed by his initials.) 



Males. 

 In all the following species the fore coxae bear teeth: 



1 . Second dorsal segment with a pair of transverse fovece, 

 posterior to the transverse depression (inter- 

 rupted or continuous) that crosses the segment. 

 Tooth on either side of segment 5 well de- 

 veloped 3. 



No fovece present, tooth on side of segment 5 rudi- 

 mentary (apex of ventral segment 4 not emar- 

 ginate) 2. 



[No foveae, place where they would be very densely 

 covered with minute punctures; tooth on side 

 of segment 5 fairly large. Tegulae bright apricot 

 colour. (Indiana). Ammaculata Ckll.( I suppose 

 this might extend to Canada. — T. D. A. C.)] 



2. Transverse depression on segment 2 uninterrupted 

 in middle; segment 1 well clothed with long hair, abdomen 

 comparatively finely and closely punctured; postgena? with 

 large groove at lower end, the groove densely clothed with 

 hair like rest of hind cheek. Apex of 4th ventral segment short, 

 rounded; abdomen short and wide, no carina on frons, legs 

 black .' ribis Ckll. 



(C rihis kincaidii Ckll., from Olympia, Wash., also runs 

 here.— T. D. A. C ) 



Transverse depression of segment 2 widely interrupted in middle; 

 segment 1 clothed scantily, the hair very short and ad- 

 pressed, abdomen coarsely and remotely punctured, postgence 

 ivithout groove, apex of 4th ventral segment bispinose, abdo- 

 men elongate; frons with Y-shaped carina, the forks flattened 



July, 1015 - 



