AMERICAN COLKOPTKRA. 291 



21. D. valida Lee. 



As collections now stand this name is quite generally used for 

 two or more distinct species. Unfortunately the type of valida was 

 a unique female ; a fact which makes its identification a matter of 

 some uncertainty, and compels us to depend largely on the type 

 locality (San Francisco). I received some time ago from Dr. Van 

 Dyke several males taken by him in early spring near San Fran 

 Cisco (Marin County). These are all rather small (9-102 mm.), 

 black, with dark bottle green elytra, rather widely reflexed and 

 nearly impunctate clypeus, clypeal suture almost obliterated, hind 

 tibial spurs (S ) nearly equal, posterior ungues distinctly cleft near 

 the tip. Two females were subsequently received, the first surely or 

 this species, since it was associated with additional males of the type 

 above mentioned, and not differing materially from them in either 

 color or size ; the other unassociated with males, larger, and show- 

 ing a tendency toward paleness in thorax and legs, as is described 

 of the original valida. In view of the very general variability of 

 this sex in size and color it is probable that the species above men- 

 tioned is the true valida. I have also placed with it for the present 

 Oregon specimens, which have passed as valida, and from which, if 

 I mistake not, the male characters as described by Horn was taken. 

 In these specimens there seems to be a more evident disparity be 

 tween the spurs of the hind tibiae in the male, as well as some other 

 differences when compared with the San Francisco ones, and it may 

 have to be given a distinct name when we have accumulated mate- 

 rial sufficient for a thorough study. As here understood, valida is 

 confined to the Coast Range from Middle California to Oregon. The 

 Sierra species which has passed under the same name is here de- 

 scribed as vicina. In the formation of the spurs of the hind tibiie 

 in the male it is clearly distinct from valida and more nearly related 

 to sulcata of the Rocky Mountains. 



22. D. Ticina sp. nov. 



This name is propo.sed for a form which passes usually as valida, 

 but which I have seen labeled sulcata in at least one collection. It 

 is, in fact, very closely related to sulcata, with which it agrees 

 almost completely, except in the following respects : The elytra are 

 always of a brilliant green color, the thorax is punctured over the 

 greater portion of its surface, the clypeal suture is less deeply im- 

 pressed, and the size, on the average, is a little larger. The females 



TRANS. AM. ENT. SOC, XXVII. AUG., 1901. 



