892 ZOOLOGY INSECTS. 



of the pronotum brownish-yellow (probably olive when living) ; the pos- 

 terior lobe rufous ; a distinct bright-yellow spot, of uniform width, runs 

 along the whole length of the dorsum of the abdomen, margined with black; 

 disk sometimes fuscous. The color of the alcohol specimens probably 

 varies but little from that of the living specimens. 



Dimensions. 9, length, 1.25 inches; posterior femora, 0.74 inch; pos 

 terior tibiae, 0.63 inch. S, length, 1 inch; elytra, 0.18 inch; posterior 

 femora, 0.62 inch ; posterior tibiae, 0.50 inch. 



From Southern Arizona; collected by the expedition of 1874, and 

 named in honor of Gen. A. A. Humphreys, the chief of the Engineer Corps, 

 under which these expeditions have been conducted. It is a fine, robust 

 species, well marked, and quite distinct. 



OMMATOLAMPIS, Burm. 

 OMMATOLAMPIS VIRIDIS, Thos. 



Ommatolampis viridis, THOS., Synop. Acrid., 156. 



Caloptenus viridis, THOS., U. S. Geol. Surv. Terr., 1871, 450, pi. ii, f. 3. Id., Glover 

 Ortli., pi. xi, f. 3. 



There is an imperfect specimen of this species in the collection ; it is 

 the first, so far as I am aware, that has been obtained west of the range. 



CALOPTENUS, Burm. 

 CALOPTENUS SPBETUS, Uhler. 



A number of specimens of this destructive species are contained in the 

 last collection, a few only in the first, indicating that as we move southwest 

 into Arizona it ceases to be so abundant as in Utah and farther east and 

 north ; whether this inference be correct or not I am not aware. So far as 

 I can learn, it has not yet been found in California ; but as it is found imme- 

 diately east of the Sierra Nevada it is quite probable that it reaches to the 

 Pacific, though it may not be migratory on the west side of the range. It 

 is a matter of some scientific interest to learn positively in regard to this, 

 and it would be well for collectors in California to look carefully for it. 

 From a remark by Dr. Packard in the American Naturalist, I presume he 

 has received specimens from California. 



It is somewhat strange that the first specimen ever examined and named 



