1 8 MEMOIRS ON THE COLEOPTERA 



4 Body moderately stout, rather convex, opaque, the elytra shining, 

 deep black, the abdomen with trace of metallic lustre; labrum (9 ) 

 deep black throughout, shining, carinate medially and with only a 

 few coarse rugulae, not strongly bi-impressed, tridentate on the 

 produced tip; prothorax transverse, equal in width to the head; 

 elytra without pale maculation of any kind; abdomen (9 ) with the 

 apex produced medially, the lobe arcuately truncate, its surface 

 impressed; hind tarsi evidently longer than the tibiae but much shorter 

 than in montana. Length ( 9 ) 13.0 mm. ; width 4.8 mm. Nebraska. 



nebraskana Csy. 



Body larger and distinctly stouter, opaque, the elytra shining, deep black; 

 labrum (9 ) deep black, produced and tridentate at tip, the surface 

 dull, distinctly biconcave and finely, closely rugulose, strongly 

 carinate medially; prothorax as usual, strongly transverse; elytra 

 without pale maculation, though with the location of the median 

 band rather obviously indicated by the form of sculpture; abdomen 

 with feeble metallic glint, the apex ( 9 ) wholly different from the 

 preceding, being evenly parabolic from side to side, the middle of the 

 apex rather narrowly rounded, with a very minute and feeble 

 notch, the surface not impressed; in the male the apical sinus is 

 nearly as in montana; hind tarsi rather short, about as long as the 

 tibiae in both sexes. Length (cf 9 ) 12.8-15.0 mm.; width 4.8-5.5 

 mm. Alberta (Lethbridge), J. Harms calgaryana n. sp. 



The above forms are all unequivocally specific in nature, differing 

 among themselves in important structural features. The difference 

 in form of the abdominal apex in the female of nebraskana and 

 calgaryana is indeed remarkable. I regret being unable to give a 

 complete table of this interesting group ; so many of the forms allied 

 to longilabris are unrepresented in my material, that it is scarcely 

 worth while to attempt a full report. My previous statements in 

 regard to nebraskana and the Lethbridge specimens are erroneous 

 and were due to the fact that I did not at that time have the true 

 montana in my collection. 



In the nigroccerulea group it is sufficiently evident from an ex- 

 ample of robusta Leng, which is now before me, that my feminalis 

 does not differ except varietally, robusta being of a dull sericeous 

 green and feminalis blackish-blue, with the same sericeous lustre; 

 in the female of both forms the juxta-sutural shining depressed 

 punctured spot near basal fourth is evident. In my opinion both 

 robusta and feminalis should be considered subspecies of the appar- 

 ently larger nigroc&rnlea. 



The recent acquisition of the true pusilla of Say, enables me to 

 make some more usefully definite statements than were possible 



