162 ENTOMOLOGICAL NEWS [June. '22 



piceous, but varying to rufous. I have seen numerous exam- 

 ples of collaris from Massachusetts, and a few of fossor from 

 Montreal. 



Briefly, the errors in the LeConte table are these collaris 

 (and also fossor} has a spur near the outer tip of the middle 

 tibia and should therefore have been tabulated with the species 

 possessing that character. Striatopunctata has the clypeal out- 

 line as well as the other characters of fcrrca, convc.va, etc., 

 and should be included in the same group with them. Rnfa 

 should stand between amcricana and month. It is interme- 

 diate in size between these two, and differs in no way except 

 color from black examples of like size which may be placed 

 either with amcricana or month, according to personal judg- 

 ment or caprice. Tt is highly probable that month, ntfa, amcri- 

 cana and cordata represent nothing more than size and color 

 variations of a single species. 



Of the characters used by LeConte in the table referred to, 

 that of the spur near the outer tip of the middle tibia is of im- 

 portance and is correctly used except in the case of collaris 

 alluded to above. The meaning of the next leading character 

 used in the table -"clypeus with lateral lobes" or "clypeus 

 rounded at sides"- is not quite so easily interpreted. There 

 are in reality three types of clypeal outline. In the first, rep- 

 resented by dentipcs alone, the clypeus is bi-emarginate or 

 bilobed at sides. In the species impressifrons to cordata inclu- 

 sive the sides of the clypeus are uni emarginate, the posterior 

 convex outline defining the lateral lobe. In the remaining 

 species the structure differs from the preceding in that the 

 anterior margin is but slightly advanced, leaving a very small 

 notch or emargination at the angles, the lateral lobe thus occu- 

 pying almost the entire side of the clypeus. 



Certain other characters, not mentioned or only vaguely 

 alluded to by LeConte, are so definite and simple in their appli- 

 cation as to make them well worthy of consideration. Classified 

 according to the dorsal setigerous punctures of the elytra the 

 species separate as follows : 



Elytra with five dorsal punctures . . dcnfipes 



Elytra with four dorsal punctures imt>rcssifnnis to cordata 



Elytra with two dorsal punctures striatopunctata to 



