1922.1 ^^ 



usually Avith much less distinct punctures; anterior area of the 

 propodeum finely rugose, the wrinkles generally disappearing before 

 reaching the end, so that the surface becomes merely granulate or 

 minutely sculptured nitidiuscuhis K. 



48 (47) 2nd abdominal segment blacker, less clothed, its apical impression 



generally with less distinct and much less numerous punctures (of ten 

 closely resembling that of the third segment in this respect) and 

 with "the surface strongly shining; anterior area more rugose, the 

 wrinkles extending over the whole surface 

 .... mrimtus K. 



49 (46) Apical portion of 2nd abdominal segment impunctate or practically 



so and under a strong lens with an excessively fine transverse 

 rugulosity apparent; face longish or oblong-ovate, the clypeus more 



produced. 



(Basal abdominal segment impunctate or nearly so.) 

 .... rvfitarsis Zett. 



50 (45) Inner spur of hind tibiae with the teeth short and blunt or widely 



rounded at the tips, not spine-like ; apical impression of the basal . 

 seomeut hardly effaced even in the middle ; fresh examples have 

 sn°all tomentose lateral spots on the 2nd abdominal segment 



jiaitxillm var. immnrc/matiis. 



Group I. 



1 a\ ^ with the 5th ventral segment strongly emarginate ; $ with the apical 



impression of the basal abdominal segment finely but copiously 



punctured. , , 



2 (3) /mandibles strongly dilated at base; 9 tib>ae black or dark 



beneath the scopal hairs .... tetrazonius Kl. [l-anctus K. nee F.). 



3 (2) 6 mandibles ordinary ; $ tibiae yellow. „ , , . 



(a) Antennae of 6 with the flagellum mostly yellow (above and 



beneath) • ruhieundns var. * nesiotis, n. 



{h) Antennae of S with flagellum not yellow 

 . . . , riibicundus Chr. 



4 (1) c? 5th ventral segment with nearly straight apical margin; $ with 



the apical impression of 1st segment of abdomen minutely rugulose, 

 with at most excessively feeble indistinct punctures, sometimes 

 wanting maculatus Sm. 



Group III. 



1 (6) 6 Inml tibiae fur the most part or wholly yellow, if («« a J'^^-^f y) 



widely black in the middle, then the apical impressions of the nd 

 3rd, and 4th abdominal segments are filled with complete bands of 



dense tomentum. , j i 



5 with the apical impression of the 1st abdominal segment densely 



finelv punctured. . 



2 (3) c? 5th ventral segment at most slightly depressed; antennae on y 



nioderatelylong^^jneseo^^ 



* I propose this name for the curious forn, of <J found by F. Sr.ith on Lundy Island. ^ ^ 



