384 



GEOLOGICAL SUEYEY OF THE TERRITOEIES. 



nosits extends westward over all obstacles until the base of the Sierra 

 JS^evada is reached. It has not yet occurred in California proper. 



Owen's Yalley, California, alfords si)ecies of an Arizona origiu as well 

 as several sea-coast species from the San Diego region, comparatively 

 few new or peculiar species occurring. 



As might be expected each new region visited yields new JlcJoidcc^ of 

 the genera Epicanta and Lyita ; in fact, each species of Astragalus has 

 its peculiar Lytta ; and wherever any of that genus of plants is found in 

 flower, an accompanying vesicant may always be looked for. 



One region of Arizona remains to be carefully explored, and good 

 results may be expected in every branch of natural history. This is the 

 elevated pine-growing region near Fort YThipple. The insects that 

 have been collected indicate a temperate fertile region ; and one, too, 

 that is almost completely surrounded by desert and very hot valleys. 



One gratifying fact may be noticed in the present collection. The 

 progress of Doryplwra decemlineata is not westward; and while eastern 

 agriculturists view with great apprehension the steady and sure advance 

 of that insect toward tbe Atlantic, none appear to have crossed the 

 mountains to the west into the fertile valleys of the Salt Lake Basin. 

 This enemy of the potato-plant is now, 1871, in Canada, north of Lake 

 Erie, and from its known rate of travel farmers of the Atlantic slope 

 may expect this new enemy in two or three years. 



The following list contains the species collected hy the various expe- 

 ditions under Dr. Hayden, and although not very large is as much as 

 can be expected when the great labor in other departments is consid- 

 ered : 



After the name of each species, at the end of the lino a letter is found 

 indicating the name of the locality, as follows : K., Kansas and west- 

 ward to liocky Mountains; U., Utah: L, Idaho; M., Montana; C, Cali- 

 fornia; O., Oregon; I. T., Indian Territory; X. M., Xew Mexico; X., 

 ]Srevada. \Yhere an asterislv (*) is placed alter a name, it shows it to be 

 very widely distributed. 



CICES'DELIDJS. 



Amblycliila cylinclriformis, Say K. 



Megacephala vir^iuica, Dej K. 



Cicindcla formosa, Say K. 



obsoleta, Sa j' K. 



pnlclira, Say K. 



Moutana, Lee I. 



splendida, Htz K.I. 



repanda, Dej U. 



12-guttata, bej * 



purpurea, 01 * 



Cicindela tcrricola. Say K. C. 



cuprasccus, Lcc K. 



macra, Lee K. 



fulgida, Say K. 



punctulata, Fab * 



eircumpicta, Fert6 1. T. 



celeripes, Lee K. 



cursitaus, Lee K. 



deceuinotata, Say M. 



vulgaris, Say * 



16-puDctata, Klug M. 



CAllABID^E. 



Elapbrus ruscarius, Say I. 



califoruicus, Mann K. C. 



Carabus serratus, Say K. 



tffidatus, Fab I. 



Calosoma semilaive, Lee U. 



baydeuii, Horn Col. 



laqueatum, Lee M. 



zimmcrmanni, Lee I. M. 



calidum. Fab K. 



scrutator, Fab K. 



obsoletum, Say K. 



triste, Lee K. 



externum, Say K. 



Cyclirus elevatus, Fab K. 



Omopbron americaunm, Dej K. 



nitidum, Lee K. 



Pasimachus validus, Lee K. 



elongatus, Lee K. 



obsoletus, Lee K. 



Scarites subterrancus, Fab K. 



Cliviua bipustulata, Doj K. 



postica, Dej K. 



ferruginea, Lee K. 



Aspidoglossa .subaugulata, Lee : K. 



Dyscbirius sulcatns. Leo K. 



sphiericollis. Lee K. 



Bracbinus cordicoUis, Daj U. 



kausanus, Lee K. 



