GENERA AND SUBGENERA OF BEES—SANDHOUSE 595 
Ptilothrix F. Smira (=—Ptilothryx MArscHaLL; Energoponus HorMBERG). 
Catalogue of hymenopterous insects . . . British Museum, pt. 1, p. 181, 1853. 
Type.—Ptilothrix plumatus KF. Smiru, 1858. (Monobasic. ) 
Isogenotypic with Hnergoponus Holmberg through synonymy. 
(Ptilothryx MarscHatz) for Ptilothrix F. Smiru. 
Nomenclator Zoologicus, p. 269, 1873. 
Ptilotopus Kua. 
Mag. Ges. naturf. Freunde Berlin, vol. 4, p. 31, 1810. 
Type.—Piilotopus americanorum Kiva, 1810. (Monobasic.) 
As Ptitolopus (1. ¢., p. 45). 
Synonym of Centris Fabricius, according to Latreille, in Cuvier, Régne 
Animal (new ed.), vol. 5, p. 356, 1829, and Dalla Torre, Catalogus Hymen- 
opterorum, vol. 10, p. 802, 1896. 
(Ptoleglossa FRIESE) =—Orphana VACHAL, 
Stettin. Ent. Zeit., vol. 91, p. 127, 1930. 
Type.—(Leptoglossa paradoxa FRIESE, 1925)=Orphana inquirenda VACHAL, 
1909. (Autobasic. ) 
Proposed for Leptoglossa Friese, 1925, not Klug, 1839, which is isogenotypic 
with Orphana Vachal. 
Puncticolletes NoskIEWwIcz. 
Die palearktischen Colletes-arten, pp. 26 and 490, 1936. 
Proposed as a subgenus of Colletes Latreille to include three species but 
without an original genotype designation and therefore invalid under 
Article 25c. 
Pyrobombus DALLA Torre (—Pyrrhobombus Darya Torre). 
Die Naturhistoriker, vol. 2, p. 40, 1880. 
Type—(Apis) Bombus hypnorwm (LINNAEUS), 1758. (Monobasic.) 
Proposed as a subgenus of Bombus Latreille. 
(Pyrrhobombus Darra Torre) for Pyrobombus DALLA TorRRE. 
Ber. naturw.-med. Ver., Innsbruck, vol. 12, p. 28, 1882. 
Pyrrhomelecta ASHMEAD. 
Trans. Amer. Ent. Soc., vol. 26, p. 66, 1899. 
Type.—LHpeolus glabratus CrEsSSON, 1878. (Monobasic and original desig- 
nation.) 
(Raphidostoma CocKERELL)=Chelostomopsis COCKERELL. 
Pan-Pacific Ent., vol. 12, p. 133, 1936. 
Type.— (Raphidostoma ceanothi COCKERELL, 1936) = (Chelynia) Chelostomop- 
sis rubifloris (CoCKERELL), 1898. (Monobasic and original designation.) 
Isogenotypic with Chelostomopsis Cockerell through synonymy. 
Rediviva FRIESE. 
Zool. Jahrb., Abt. Syst., Jena, vol. 80, p. 671, 1911. Three species. 
Type.—(Andrena) Rediviva peringueyi (FRIESE), 1911. (By designation of 
Cockerell, Ann. Mag. Nat. Hist., ser. 10, vol. 8, p. 402, 1981.) 
Proposed as a subgenus of Andrena Fabricius. 
Reepenia FRIESE. 
Ann, Hist.-Nat. Mus. Hungarici, vol. 7, pp. 191 and 205, 1909. 
Type.—Nomia (Reepenia) variabilis FRIESE, 1909. (Monobasic.) 
Proposed as a subgenus of Nomia Latreille. 
Rhathymus LEPELETIER AND SERVILLE (—Colax LEPELETIER, ‘“‘inedit,” 1825, not 
Hijipner, 1819, not WIEDEMANN, 1824; Liogastra PERTY). 
Encycl. Méthod., Hist. Nat., Ins., vol. 10, p. 448, 1828. 
Type —Rhathymus bicolor LeEPELETIER AND SERVILLE, 1828. (Monobasic.} 
[No species was included in Colaz.] 
Isogenotypie with Liogastra Perty through synonymy. 
