594 PROCEEDINGS OF THE NATIONAL MUSEUM VOL. 92 
Pseudomegachile Friresr (=Pseudomegalochila ScHuLz). 
Term. Fuz., vol. 21, p. 198, 1898. No species. 
Die Bienen Europas, vol. 5, p. 36, 1899. Twenty-nine species. 
Type.—Megachile ericetorum LEPELETIER, 1841. (By designation of Alfken, 
Konowia, vol. 12, p. 55, 1933.) 
Proposed as a subgenus of Megachile Latreille. 
(Pseudomegalochila ScHuttz) for Pseudomegachile FRIEse. 
Spolia Hymenopterologica, p. 71, 1906. 
Pseudomelecta RADOSZKOWSKI. 
Horae Soc. Ent. Ross., vol. 8, p. 55, 1865. Two species. 
Type.—Melecta diacantha EVERSMANN, 1852. (Present designation.) 
Synonym of Melecta Latreille, according to Dalla Torre, Catalogus Hymen- 
opterorum, vol. 10, p. 318, 1896. 
(Pseudo-osmia RAposzKoWSKI) for Pseudosmia RADOSZKOWSKI. 
Bull. Soc. Imper. Nat. Moscou, vol. 46, pt. 2, p. 187, 1878; vol. 48, pt. 1, 
p. 152, 1874. 
Pseudopanurgus COCKERELL. 
Can. Ent., vol. 29, p. 280, 1897. Two species. 
Type.—Panurgus aethiops Cresson, 1872. (Original designation.) 
Pseudopasites BISCHOFF. 
Deutsche Ent. Zeitschr., p. 593, 1928. Four species. 
Type.—Pasites pygmaeus Friese, 1923. (Present designation.) 
Proposed as a subgenus of Sphecodopsis Bischoff. 
Pseudosmia RADOSZzKOWSKI (—Pseudo-osmia, and Pseudocosmia RADOSZKOW- 
SKI). 
Horae Soc. Ent. Ross., vol. 8, bull. p. xviii, 1871 (1872). No species. 
Bull. Soe. Imper. Nat. Moscou, vol. 48, pt. 1, p. 152, 1874. Nine species. 
Type.—Megachile cristata Fonscotomss, 1846. (By designation of Cockerell, 
Amer. Mus. Novit., No. 40, p. 6, 1922.) 
Synonym of Anthocopa Lepeletier and Serville, according to Cockerell (1. ¢.). 
Psithyrus LEPELETIER (—Apathus NEWMAN). 
Ann. Soc. Ent. France, vol. 1, p. 373, 1882. Nineteen species. 
Type.—Apis rupestris Fasrictus, 1793. (By designation of Curtis, Brit. Ent., 
vol. 10, pl. 468, 1833.) 
Pterandrena ROBERTSON. 
Trans. Amer. Ent. Soc., vol. 28, pp. 187 and 1938, 1902. Hight species. 
Type.—Andrena pulchella Ropertson, 1893. (Original designation.) 
Ptilandrena ROBERTSON. 
Trans. Amer. Ent. Soc., vol. 28, pp. 187 and 192, 1902. Two species. 
Type.—Andrena erigeniae Rosertson, 1891. (Original designation. ) 
Ptiloglossa F. SMITH. 
Catalogue of hymenopterous insects .. . British Museum, pt. 1, p. 7, 1853. 
Type.—Ptiloglossa ducalis F. SmirH, 1853. (Monobasic. ) 
Synonym of Caupolicana Spinola, according to Vachal, Rev. d’Ent. France, 
p. 34, 1909, and Ducke, Zool. Jahrb., Abt. Syst., Jena, vol. 34, p. 82, 1912. 
Ptilopoda FRIESE. 
Stettin. Ent. Zeit., vol. 82, p. 83, 1921. 
Type.—(Colletes (Ptilopoda) maculipennis Friese, 1921) =Collettes spiloptera 
COcCKERELL, 1917. (Monobasic.) 
Proposed as a subgenus of Colletes Latreille. 
