292 T. D. A. COCKERELL. 



Canadian to Middle Sonoran. 



C. armata Patton. Beulah (C, W. P. C.) ; Sapello Canon, Aug. 31st (W. P. C); 

 San Ignacio, Sept. 1st (T. and W. Ckll.) ; Albuquerque; M. V. The iden- 

 tifications of Canadian and Transition Zone material are by Mr. Swenk, 

 and probably refer to the segregated forms cited above as bigelovise and 

 brevispinosits. 



Transition Zone. 



C. cbamsesarachse Ckll. S. F.* Fls. Chamsesaracha. 



C. aberrans Ckll. S. P.* Mr. Swenk has found this a common visitor of 

 Fetalosiemon on the Nebraska sand hills. 



Transition to Upper Sonoran. 



C. g-ilensis Ckll. Gila Eiver •■' ; Gallinas Eiver; Sacramento Mts. ; Pecos; L. 

 v.. Aug. 9, fls. Melilotus alba, 9 (W. P. C), Aug. 11th, fls. Solidago canaden- 

 sis (W. P. C). 



Transition to Middle Sonoran. 



C. utilis Ckll. High Rolls (V.) ; M. V.» 



C. americana Cress. S. F. ; Gila Eiver; TuertoMtu.; Embudo; Watrous; L. 

 V. ; M. V. 



Upper Sonoran. 



C. "wilmattse Ckll. Pecos.* Mr. Swenk has taken this in Nebraska, and finds 



it an oligotropic visitor of Petalostemon. 

 C. robustus Swenk. L. V., July 21,9- As. Petalostemon oligophi/llus (C), Aug. 



11, 9> fls. Solidago canadensis (W. P. C). Mr. Swenk now holds that this 



is identical with C. robertsonii D. T. 

 C. tegularis Swenk. Albuquerque, Aug., 1894, 9 (Snow), fide Swenk. 

 C. wootoni Ckl. Rio Euidoso, 6400 ft,*; Riley's Ranch, Organ Mts., Aug. 29. 



fls. Lippia wrightii, % (C.) ; M. V. 



Middle Sonoran. 

 C. crucis Ckll. M. V.* 

 C. dalese Ckll. M. V.« 

 C. texana Cress. M. V. Fls. Halix. 

 C. prosopidis Ckll. M. V* Fls. Prosopis. 

 C. salicicola Ckll. M. V.* Fls. Salix. 

 C. annse Ckll. M. V.* 

 C. louisse Ckll. M. V.« 

 C. g-ypsicolens Ckll. White Sands.* 

 C. algarobise Ckll. M. V.* Fls. Prosopis. 



€AUPOL,ICAl^A Spinola. 

 C. yarrowi Cress. Albuquerque (Snow, 1894); El Eito ; Organ Mts. 



SrHEC'ODES Latr. 



Canadian Zone. 

 S. fragarise Ckll. Beulah.* 



