GENERA AND SUBGENERA OF BEES—SANDHOUSE 521 
stances, are in agreement with those given in Nomenclator Animalium 
Genera et Subgenera, published by the Preussische Akademie der Wis- 
senschaften in Berlin (not yet complete), and Neave’s Nomenclator 
Zoologicus, the final volume of which appeared in 1940. It should be 
noted, however, that the latter cites 1805 instead of 1804 as the date of 
publication of Fabricius’ Systema Piezatorum, in agreement with the 
conclusions published by Richards.* 
In arrangement this catalog follows rather closely that adopted by 
Rohwer, Viereck, and Gahan and Fagan in earlier genotype catalogs 
of other groups of Hymenoptera. The generic and subgeneric names 
are listed alphabetically with reference to the original description, 
and, if no species was originally included, the citation to the work in 
which the first species was assigned is given also. The number of 
species originally included is shown except in the case of monobasic 
genera. In each case mention of the genotype is followed by the date 
of original description and by an indication of the character and place 
of type fixation. If the genotype is considered to be a synonym, the 
name is enclosed in parentheses and is followed by the name of the 
valid species. Erroneous type designations are mentioned, together 
with reasons for considering them invalid. 
ALPHABETICAL LIST OF GENERIC AND SUBGENERIC NAMES * 
Abda, new name (—Anthedon Roserrson, 1900, not AGAssiz, 1846). 
Type.—Melissodes compta CRESSON, 1878. (Autobasic.) 
Abrupta MEHELY. 
Naturgeschichte der Urbienen, pp. 32 and 137, 1985. Two names. 
Proposed as a subgenus of Prosopis Fabricius. 
Invalid under Article 25c of the International Rules of Zoological Nomen- 
clature, since no genotype was designated. 
Abrupta Popov. 
Compt. Rend. (Doklady) Acad. Sci. U. R. S. S., new ser., vol. 25, p. 167, 
1939. 
Type.—(Hylaeus) Prosopis cornuta (FE. Smith), 1842. (Monobasic and 
original designation. ) 
Acamptopoeum COCKERELL. 
Trans. Amer. Ent. Soc., vol. 31, p. 320, 1905. 
Type.—Campionoeum trifasciatum Sprnoua, 1851. (Monobasie and original 
designation.) 
Acanthalictus CocKERELL. 
Ann. Mag. Nat. Hist., ser. 9, vol. 14, p. 184, 1924. Two species. 
Type.—Halictus dybowskii RaAposzKowSskI, 1877. (Original designation.) 
' Acanthopus Kiva. 
Magazin fiir Insektenkunde, vol. 6, pp. 199 and 226, 1807. 
Type.—(Apis) Xylocopa splendida (Faxsxricius), 1793. (Monobasic.) 
4 Trans. Roy. Ent. Soc. London, vol. 83, p. 144, 1935. 
5 This list is believed to be complete for the literature through 1938, and some names 
_ that appeared in 1939 are included. 
—— 
