312 AMERICAN HYMENOPTERA. 



ANTHOPHOROIDES T. and W. Ckll. 

 A. vallorum Ckll. M. V.» 



ANTHOPHORUL.A Ckll. 

 A. compactula Ckll. Organ Mts. ; M. V. " Extends to Brownsville, Texas 

 (Lower Sonoran). 



A. sidse Ckll. M. V.» 



EXOUAL,OP!!>iIS Spinola. 

 E. solani Ckll. Albuquerque;* Mescalero ; Organ Mts.; M. V. 

 E. solidag-inis Ckll. M. V. ■■ 

 E. verbesinse Ckll. M. V.* 



CEMTRIS Fabr. 



Middle Sonoran. 

 C. morsel Ckll. M. V.® 



C. morsel marglnata Fox. M. V.* Extends to Douglas, Arizons, 3750 ft. 

 O. rhodopus Ckll. M. V.* 

 C. rhodopus pulchrlor Ckll. M. V.* 

 C. csesalplnlse Ckll. M. V.* 

 C. hoffmansegg-lse Ckll. M. V.* 

 C cockerelll Fox. M. V.* 

 O. lanosa Cress. M. V. 



XYL,0<JOPA Latr. 

 X. arlzonensis Cress. Lone Mtn. ; Organ Mts. ; M. V. 



CERATINA Latr. 

 C. neomexlcana Ckll. Chicorico Canon, near Raton*; Rio Ruidoso; S. F. 

 C. nanula Ckll. M. V.* 



PSITHYRUS Lep. 

 P. variabilis Cress. Tuerto Mtn., 8200 ft. 

 P. Insularls Smith. Beulah. 

 P. cevallise Ckll. M. V.* 



ROMRUS Latr. 

 Arctic- Alpine to Hudsonian. 



B. frig-ldus Smith. Truchas Peak, above timber-line (W. P. C.) ; top of Las 



Vegas Range. Typ. loc. Arctic America. 



Arctic- Alpine to Canadian. 



B. flavlfrons Cress. Truchas Peak, above timber-line (W. P. C.) ; top of Las 

 Vegas Range; Beulah (Skinner). Var. veganus Ckll. is from top of Las 

 Vegas Range.* 



Arctic-Alpine to Transition. 



B. huntU Greene. Truchas Peak, above timber-line (W. P. C.) ; top of Las 

 Vegas Range; Harvey's Ranch ; Beulah; Rio Ruidoso; Mescalero; Aztec. 

 The synonymy of this species will be explained elsewhere by Mr. H. J. 

 Franklin. Viereck reports var. bifarins Cress, from Beulah. 



