GENERA AND SUBGENERA OF BEES—SANDHOUSE 535 
Centris Fapricitus (=Eulaema LEPELETIER). 
Systema Piezatorum, p. 354, 1804. Many species. 
Type.—Apis dimidiata Fapricirus, 1793. (By designation of Blanchard, His- 
toire naturelle des insectes ..., vol. 3, p. 405, 1840.) ([Apis] Centris 
hirtipes Fabricius, 17938) =Apis rustica Olivier, 1789, designated by Blanch- 
ard, in Cuvier, Régne animal [ed. 3], insectes, text vol. 2, p. 217; atlas 
pl. 128 bis, fig. 7 [1849]. 
Isogenotypic with Hulaema Lepeletier. 
(Centris auct., not FaBricius)=Hemisia Kiva. 
Centrodes Kiue, nomen nudum. 
Magazin fiir Insektenkunde, vol. 6, p. 217, 1807. 
Centrosmia ROBrRISON. 
Trans. Amer. Ent. Soc., vol. 29, pp. 165, 166, and 170, 1903. 
Type.—O'smia bucephala Cresson, 1864. (Monobasic and original designa- 
tion.) 
Synonym of Melanosmia SCHMIEDEKNECEHT, according to Sandhouse, Mem. 
Ent. Soc. Washington, No. 1, p. 33, 1989. 
Cephalapis CoCKERELL. 
Ann. Mag. Nat. Hist., ser. 8, vol. 5, p. 28, 1910. 
Type.—Chelostoma (Cephalapis) jacintanum CocKERELL, 1910. (Monobasic 
and original designation.) 
Proposed as a subgenus of Chelostoma Latreille. 
Cephalictoides CocKERELL,. 
Psyche, vol. 31, p. 244, 1924. 
Type.—Halictoides paradoxus Morawtitz, 1867. (Monobasic and original 
designation. ) 
Proposed as a subgenus of Halictoides Nylander. 
Cephalosmia SLADEN. 
Can. Ent., vol. 48, p. 270, 1916. 
Type.—(Osmia armaticeps CRESSON, 1878)=Osmia montana Cresson, 1864. 
(Monobasic. ) 
Cephen RoserTsoNn. 
Can. Ent., vol. 35, pp. 174 and 176, 1903. 
Type.—Nomada terana Cresson, 1872. (Monobasie and original designa- 
tion. ) 
(Ceraplastes GISTEL) =Stelis PANZER. 
Naturgeschichte des Thierreichs, p. x, 1848. 
Type.— (Apis aterrima PANzER, 1798, not CHRIST, 1791) =Apis punctulatissima 
Kimey, 1802. (Autobasic with Stelis.) 
Proposed unnecessarily for Stelis Latreille, which Gistel considered to be 
preoccupied by a genus of plants. 
Isogenotypie with Stelis Panzer, Gyrodroma Klug, and Gymnus Spinola. 
Trachusa Jurine, 1801, also isogenotypic with Stelis, has been invalidated 
by Opinion 135 of the International Commission on Zoological Nomen- 
clature. 
(Ceratias RoBERTSON, not KRoyer, 1845) =Sayapis Titus. 
Trans. Amer. Ent. Soc., vol. 29, pp. 168 and 172, 1803. Three species. 
Type.—Megachile pugnatus SAy, 18387. (Original designation. ) 
Isogenotypic with Gnathocera Provancher and Sayapis Titus through 
synonymy. 
469206—43——_2 
