224 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.42. 



remotula Cockprell, 1911. Claremont, California (Baker). Subgenus Erythrosmia. 

 *ribifloris Cockerell, 1900. Romeroville, New Mexico, April 29 (W. Porter). 



Tab. 8. 

 Female 11 mm., dark shining blue, pubescence all black, legs blue. 

 Allied to 0. cobaltina, but much darker. Specimens in the Baker collection were 

 obtained by Oslar at Santa Fe, New Mexico, and Thumb Butte, Phoenix, Prescott, 

 and Copper Basin, in Arizona. A species from Arizona, named by Titus in ma,nu- 

 Bcript after Biedermann, differs in being green, but is probably only a race. It 

 has a broader abdomen than normal riUfloris. 

 Paratype— Cat. no. 14473 U.S.N.M. 

 *rustica Cresson, 1864. Easton, Pennsylvania (E, Norton). 

 Said to be a variety of 0. albiventris; the male has the hair of thorax above bright 

 rust-red. 

 sanctserosse Cockerell, 1910. Santk Rosa Mountains, California, 7,500 feet 



(Grinnell). 

 seneciopMla Cockerell, 1907. Florissant, Colorado (Rohwer). 

 Also in New Mexico, at 11,000 feet. Third ventral abdominal segment of male with 

 a semicircle of long pale orange hahs in the median emargination. 

 senior Cockerell, 1907. Boulder, Colorado, June 12 (W. P. Cockerell). Tab. 1. 

 *sericea Cresson, 1864. Rocky Mountains, Colorado. 



"Somewhat resembles 0. purpurea (male), but the punctation of the abdomen is 

 finer, and the segments have no appearance of an apical whitish fringe " (Cresson). 

 Abdomen black, faintly tinged with blue and purple. 

 *siniillima Smith, 1854. "Nova Scotia; United States (Lieut. Redman)." 

 Closely resembles 0. cserulescens of Europe and Asia. 



See Trans. Amer. Ent. Society, 1905, p. 332, for notes on supposed type, which, 

 however, does not accord well with Smith's description, 

 spoliata Provancher, 1888. 



Same as Andronicus cylindricus. 

 stasima Lovell, 1909. Rockport, Massachusetts. 

 Female in Tab. 4 runs to 0. major; it is very like simillima, but differs by the broader 

 face and absence of black hair on vertex and clypeue. Middle tooth of mandibles 

 is much nearer to the outer than the inner tooth, as in 0. major. 



* subfasciata Cresson, 1872. Texas (Belfrage). 



"Ventral ecopa pale ochraceous;" but white in supposed type. See Univ. of Colo- 

 rado Studies, Dec. 1907, p. 37. 



Birkmann has taken it in Lee County, Texas, at flowers of Phacelia. 



Six females from Terrell, Texas (F. C. Bishopp), are peculiar for their olive-green 

 color, and seem to represent a local race. 



Paratype.— Cat. No. 1770, U.S.N.M. 



* subornata Cockerell, 1897. Olympia, Washington, June (Kincaid). 



Female 14 mm. long, pure black; hair of thoracic dorsum black on disk with a pale 



band before and behiad. 

 Paratype.— Cat. No. 6879, U.S.N.M. 



* subpurpurea Cockerell, 1897. Olympia, Washington, May (Kincaid). 



Female about 14 mm. long, dark steel blue; hind margins of abdominal segments 



2 to 5 each, with a thin and narrow, but evident, white hair-band. 

 Paratype.— Cat. No. 6873, U.S.N.M. 

 siibtrevoris Cockerell, 1906. Near Lake George, Colorado (Rohwer). Tab. 2. 

 tarsata Provancher, 1888. Cap Rouge. 



Belongs to Centrosmia, according to Titus, who redescribes the male; Proc. Ent. 

 Soc. Wash., vol. 7, 1906, p. 158. It is 9 mm. long, blue-black, abdomen shining 

 blue, tarsi of middle legs deformed much as in bucephala. 

 texana Cresson, 1872. Texas (Belfrage). 

 Male dark green or blue-green, with pale pubescence; legs black. 



