ENTOMOLOGICAL NEWS. 309 



and there is but one setigerous puncture within the emargina- 

 tion. In i2-guttata the abdomen is pubescent at sides (anteri- 

 orly) in the female, though much less densely so than in many 

 species ; while in oregona the sides of the abdomen in the 

 female are virtually glabrous. In the descriptions of both 

 oregona and guttifera, the front is said to be sparsely pilose ; 

 the group of setae near the inner angle of the eye does not, 

 however, warrant such description, and the facts will be found 

 to be as above stated. Guttifera was described from New 

 Mexico and was said to agree with oregona perfectly in form 

 and markings, differing only in having the tips of the elytra 

 less serrate, the sutural spine not prominent and the pleurae 

 cupreous instead of blue. This last character is of itself of 

 no moment, w y hile the others are quite inappreciable in a series. 

 I would, therefore, consider guttifera simply a synonym of 

 oregona. 



There occurs in Arizona a beautiful variety of oregona, with 

 green thorax and deep blue elytra, that passes as guttifera, 

 and had this name been originally applied to it, it might prop- 

 erly be retained. This form was, however, unknown to L,e 

 Conte at the time of writing, and as it shades into typical 

 oregona in Southeastern California, it should not now, I think, 

 be given a distinctive name. 



Oregona inhabits the entire Pacific Coast region, extending 

 thence to the Rocky Mountains of New Mexico and Colorado. 

 i2-guttata occurs throughout the northern part of the United 

 States and Canada east of the Mississippi River. Unfortu- 

 nately, in the material examined, neither the northern parts 

 of the Rocky Mountains nor the plains to the east are repre- 

 sented, and I am therefore unable to define the geographical 

 limits of either species. I have a suspicion, however, that if 

 specimens are found on the plains adjacent to the mountains, 

 they will prove to be oregona rather than T2-gnttata. 



In the high Sierras of Middle California occurs another 

 species of the oregona group, the C. depressnla of Casey. This 

 is easily distinguished from all allies by its bright green color 

 and completely non-serrate elytral apices. It is more elongate 

 than oregona and with reduced markings, the humeral dot 



