612 BuUelin American Museum of Natural History [Vol. XLII 



Gnenicher, 1911, p. 247. St. Croix Dam in Douglas County; mouths of 

 Nemakagon and Yellow Rivers, Swiss, and Randall in Burnett County; 

 Farming on in Polk County; Hudson in St. Croix County; and Maiden 

 Rock in Pierce County; Wisconsin; VII, VIII. 



Viereck, 1916, p. 732. Rockville and Stafford, Connecticut; VIII; at 

 Solidago. Makes simillima Robertson a synonym. 



satidiarum . 8ee atrifera sandinrum. 



saponellus Cockerell, 1908a, p. 234. 9 . Soap Lake, Grand Coulee, 



Washington; VI; (Melander). Suggests that it may be Xeno- 



glossodes. 

 gemiagilis Cockerell, 1906c, p. 364. (M. agilis semiagilis) cf. Fedor, 



Lee County, Texas; V*, X. 



Cockerell, 19146, p. 413. 9. Quanah*, Indian Territory [Texas ?]; 

 VI; at Helianthm; (Mitchell). Dallas, Texas; IX; (Bishopp). 

 Cockerell, 1919c, p. 27. cT. Boulder, Colorado; X; at /^efeniwm. 



semilupina. See menuacha semilupina. 



semitristis Cockerell, 1905.9, P- 102. cT. Oak Creek Canyon, Arizona; 



6000 ft.; VII; (Snow). 

 senilis. See denticulata. 

 similliina Robertson, 1897, p. 355. Carlinville, Illinois. 



Robertson, 1898a, p. 244. At Heliantkus divaricatus. 



Lovell and Cockerell, 1906, p. 111. Waldoboro, Maine; VIII, IX; at 

 Cardmis nrvensis and Solidago. 



Robertson, 1914, p. 70. At Helianthoidese and Asteroideae. 



See rustica. 



smithii Dalla Torre, 1896, p. 247. (Eiicera) New name for Melissodes 

 caZi/bmim Smith, 1879, p. 114, not Cresson. 9, d*. California. 

 Cockerell, 1905e, p. 328. Notes on type, 

 snowii Cresson, 1878a, p. 211. cf. Colorado; (Snow). 



Robertson, 1898, p. 53. Suggests that nivea may be a synonym. 

 M. agilis snowii Tucker, 1909, p. 278. Denver, Colorado; VIII. 



speciosa. See TeiraJonia. 



sphsBralceae Cockerell, 18966, p. 304. cf. Santa F4, New Mexico; 

 VII; at Sphoeralcea anguslifolia. 



Cockerell, 1904, p. 8. Pecos, San Miguel County, New Mexico; VIII; 

 at Sphceralcea fendleri; nest. 1906, p. 309: "Transition to Upper Sonoran." 



spissa Cresson, 1872, p. 280. 9 . Texas; (Belfrage). 



atearnsi. See Exomalopsis. 



streniia. See Xenoglosm. 



stretchii. See Tetralonia. 



suaviB Cresson, 1878a, p. 210. 9 . Colorado; (Morrison). 



