MEGACHILIDAE 473 



nuda (Provancher). Colo., Mont., and south. Canada to N. Y., New England 



States, and N. S. Taken on flowers of Apocynum, Geranium, 



Rubtis, and Vaccinium. 

 Macropis (Macropis) ciliata Patton of Catalog, in part. M. nuda not a 



syn. (teste Mitchell, 1960. N. C. Agr. Expt. Sta. Tech. Bull. 141: 



527). 

 Macropis (Macropis) niorsei Robertson (syn. by Mitchell, 1960, loc. cit. 



supra, p. 527). 



patellata Patton. Vt. to N. C, west to Nebr. and Mo. Taken on flowers of 

 Steironema. 



steironematis steironematis Robertson. Iowa and Mo. to Va., N. C, and Ga. 

 Taken on flowers of Apocynum, Ceanothus, Melilotus, Serio- 

 carpus, and Steironema. 



Family MEGACHILIDAE 



LITHURGE subgenus LITHURGOPSIS Fox, pp. 1136-1137 



bruesi Mitchell. 111. to Tex.; Mexico. 



echinocacti Cockerell. Mexico (Sonora, Baja California). 



*Genus TRACHUSOMIMUS Popov 



(zzlrachusa Panzer, of Catalog, p. 1137) 



Trachusomimus Popov, 1964. Rev. Ent. URSS 43: 406. 



Type: Trachusa perdita Cockerell. Orig. desig. 

 Revision: Thorp, 1963. Pan-Pacific Ent. 39: 56-58. 



Trachusa Panzer does not occur in North America. The species listed in 

 the Catalog were transferred to Trachusomimus Popov by Popov (loc. cit. 

 supra). Change specific endings to masculine. 



*gumniifer (Thorp), n. comb. Calif. (Marin and San Francisco Counties). 

 Trachusa gummifera Thorp, 1963. Pan-Pacific Ent, 39: 56. $,5. 



Genus HETERANTHiDIUM Cockerell, pp. 1137-1138 



dorsale (Lepeletier) . On lowers of Stropho styles. 



fontemvitae Schwarz. N. C. to Fla. On flowers of Chrysopsis and Kuhnis- 

 tera. 



ridingsii (Cresson). On flowers of Crotalaria, Galactia, Hypericum, Melilotus 

 and Rhus. 



zebratum chippewaense (Graenicher). Minn. (Pine Co.). 



Taxonomy: Schwarz, 1957. Kans. Ent. Soc. Jour. 30: 135. 



zebratum zebratum (Cresson). Oreg. 



Taxonomy: Stephen and Torchio, 1961. Pan-Pacific Ent. 37: 41-43. 



PARANTHIDIUM subgenus PARANTHIDIUM Cockerell and Cockerell, p. 1138 



*jugatorium butleri Snelling. Ariz. On flowers of Erigeron and Helianthus. 

 Paranthidium jugatorium butleri Snelling, 1962. Pan-Pacific Ent. 38: 



225. 9, $. 



jugatorium jugatorium (Say). On flowers of Helianthus. 



jugatorium lepidum (Cresson). Ky. On flowers of Helenium, Helianthus, 

 Rudbeckia and Silphium. 



ANTHIDIUM subgenus ANTHIDIUM Fabricius, pp. 1139-1143 



maculifrons Smith. On flowers of Afzelia, Asclepias, Bidens, Coreopsis, 

 Cracca, Crotolaria, Galactia, Galax, Phaseolus, and Psoralea. 



*pallidiclypeum Jaycox. Southern Calif. On flowers of Ceanothus, Collinsia, 

 Lotus, and Salazaria. 



