COLLETID^. 



(2) 1. Face entirely black in both sexes, clypena 



of the ? with two spine-like lateral 



Jjroji'ctious consCTA. 

 ', face white ; ? , face simple. 

 Basal segment of abdomen with no 

 lateral white pubescence at the apex. 

 Scape of the autennse in the cj dilated, 

 flattened and white anteriorly ; spots of 

 the face in the ? nearly round, situated 

 in the middle, just below the antenu;B. 

 J, mandibles white, and posterior tibiae 

 annulated with black at the apex ; ? , 

 basal segment of abdomen almost im- 

 punctate, except a few fine punctures 



at the sides dilatata. 



(5) 0. 1^, mandibles black, posterior tibias not 

 ringed with black ; ? , basal segment 

 of abdomen distinctly punctured on the 



disc Masoni. 



(4) 7. Scape of the antennae in the ^ not flat- 

 tened and dilated ; spots of the face in 

 the J on the margins of the eyes . communis. 



(3) 8. First abdominal segment with a narrow 



apical line of silvery pubescence on each 

 side. 



(12) 9. Larger species; (J with the extreme 

 base only of the hind metatarsi pale ; 

 f with the basal segment of the abdo- 

 men largely and somewhat closely 

 punctured. 



(11) 10. Face elongate; $ with the white colour 

 extending laterally high above the in- 

 sertion of the antennsB ; mandibles 

 streaked with white; % with the lateral 

 facial spots extending from near the base 

 of the mandibles to above the antenna). ruNCinLATlssLVA. 



(10) 11. Face shorter; J', white, colour not ex- 

 tending beyond the antennje, mandibles 

 black ; ? with a short lateral spot, 

 sometimes absent ..... signata. 



(9) 12. Smaller species ; $ with the posterior 

 and intermediate metatarsi entirely 

 pale, or nearly so ; ? with the basal 

 abdominal segment very finely or re- 

 motely punctured. 



(20) 13. Scape of the antenna in the $ more or 

 less swollen ; facial spots in the ? sub- 

 triangular or linear, parallel to the 

 inner margins of the eyes. 



(19) 14. Antenna) longer; scape of the $ less 

 swollen, face hairy, or mandibles with 

 a pale streak; $, pronotum generally 

 with two yellow spots, vertex of head 



