AMERICAN COLEOPTERA. 285 



Other specimens from Utah, now standing as hacMi, are surely not 

 that species, the larger head and more narrowly reflexed clypeus 

 showing them to be more nearly related to fulgida and crotchii. 

 The elytral sculpture is intermediate between typical cro/cAw and 

 fulgida, and the very few females seen do not differ in color from 

 the males. It is quite probable that they deserve a name, but 

 more specimens are needed before we can speak with confidence. 



8. D. fulgida Lee. 



9. I>. crotchii Horn. 



These two species are closely related, and there appear to be no 

 characters other than those mentioned in the table by which they 

 may be distinguished. These are quite sufficient in the case of 

 typical specimens, but intermediates are not lacking. Fulgida 

 occurs from Vancouver to Northern California and eastward to 

 Montana and the Wahsatch Mountains of Utah. I have no posi- 

 tive evidence that crotchii has ever been taken elsewhere than in 

 the Californian Sierras from Lake Tahoe southward to the San 

 Benardino Mountains. As remarked under backii, certain Utah 

 specimens resemble crotchii quite closely; they are, however, quite 

 as near fulgida, and it is not unlikely that they represent a closely 

 allied but distinct species. Specimens from the Siskiyou Mountains 

 of Northern California are intermediate in elytral sculpture between 

 the more typical northern fulgida and crotchii; the balance of 

 affinities, however, lie with fulgida. Crotchii is found on pines 

 during midsummer, usually at altitudes of 5000 to 7000 feet, and 

 it is probable that fulgida has similar habits. 



10. D. vaga sp. nov. 



Most nearly related to backii, under which it would fall in Horn's 

 table. As compared with backii, the present species is rather less 

 robust, the thorax relatively smaller, the disparity between the size 

 of the head and thorax distinctly less, the clypeus a little less widely 

 reflexed, more squarely truncate in front, with the angles more nar- 

 rowly rounded. 



The color is piceous or black, often with the margin of clypeus, 

 lateral margins of thorax, legs and antenna? testaceous; elytra 

 varying from brilliant green, with narrow pale margin to testaceous, 

 with greenish surface lustre. In fully colored specimens the legs 



TKANS. AM. ENT. SOC, XXVII. ^^^^ jqqj 



