GENERA AND SUBGENERA OF BEES—SANDHOUSE 581 
Oxystoglossa F. SMITH. 
Catalogue of hymenopterous insects ... British Museum, pt. 1, p. 83, 1853. 
Type.—Oxzystoglossa decorata F. SmirH, 1853. (Monobasic.) 
Synonym of Augochiora F. Smith, according to Ashmead, Trans. Amer. Ent. 
Soc., vol. 26, p. 91, 1899; and Sandhouse, Journ. Washington Acad. Sci., 
vol. 27, p.- 75, 1987. 
Oxytrigona COCKERELL. 
Psyche, vol. 24, p. 124, 1917. 
Type.—Trigona mediorufa CocKERELL, 1913. (Monobasic and _ original 
designation. ) 
Proposed as a subgenus of Trigona Jurine. 
Pachyanthidium Friese. 
Zeitschr. Syst. Hym. Dipt., vol. 5, p. 66, 1905. Ten species. 
Type.—Anthidium bicolor LEPELETIER, 1841. (By designation of Cockerell, 
Ann. Durban Mus., vol. 2, p. 298, 1920.) 
Proposed as a subgenus of Anthidiuwm Fabricius. 
Pachycentris FRIESE. 
Zeitschr. Syst. Hym. Dipt., vol. 2, p. 186, 1902. 
Type.—Pachycentris schrottkyit Friese, 1902. (Monobasic.) 
Pachycerapis COCKERELL. 
Amer. Mus. Novitates, no. 47, p. 4, 1922. Two species. 
Type.—Hzomalopsis (Pachycerapis) cornigera COCKERELL, 1922. (Original 
designation. ) 
Proposed as a subgenus of Hxomalopsis Spinola. 
Pachyhalictus COCKERELL. 
Ann. Mag. Nat. Hist., ser. 10, vol. 4, p. 589, 1929. Three species. 
Type.—Halictus merescens COCKERELL, 1919. (Original designation.) 
Proposed as a subgenus of Halictus Latreille for the ‘“Halicti nomiiformes” 
of Vachal and Bliithgen. 
Pachymelopsis COCKERELL. 
Trans. Amer. Ent. Soc., vol. 31, p. 331, 1905. 
Type.—Pachymelus conspicuus F. SmirH, 1879. (Monobasie and original 
designation. ) 
Proposed as a subgenus of Pachymelus F. Sinith. 
Pachymelus F. SMIrH. 
Descriptions of new species of Hymenoptera ... British Museum, p. 116, 
1879. Two species. 
Type.—Pachymelus micrelephas F. Smiru, 1879. (By designation of Cock- 
erell, Trans. Amer. Ent. Sec., vol. 31, p. 330, 1905, who transferred P. 
conspiccus F. Smith to Pachymelopsis Cockerell, as genotype, leaving only 
micrelephas in Pachymelus.) (See Opinion 6, by the International Com- 
mission on Zoological Nomenclature. ) 
(Pachyosmia DucKE) =Osmia PANZER. 
Ber. naturw.-med. Ver. Innsbruck, vol. 25, p. 18, 1900. Ten species. 
Type.— (Apis) Osmia rufa (LINNAEUS), 1758. (By designation of Sandhouse, 
Mem. Ent. Soc: Washington, No. 1, p. 9, 1939.) 
Proposed as a subgenus of Osmia Panzer. 
Isogenotypie through synonymy with Osmia Panzer, Amblys Klug, and Cera- 
tosmia Thomson, 
