ART. 12 MEGACHILID BEES FROM BOLIVIA COCKERELL, H 



Dianthidium and Hypanthidium, but also several true Anthidium, 

 occurring near the eastern base of the Andes and in Patagonia. Dian- 

 thidium steloides (Spinola) occurs all the way from Chile to the 

 Province of Buenos Aires in Argentina, according to Holmberg. 

 Ecuador (5 species) has true Anthidium, but also a species of 

 Hypanthidium {H. ecuadorium Friese). Chile (12 species) includes 

 at least some true Anthidium, but several of the species are only- 

 known to me from descriptions. The Anthidiines of northern South 

 America are few or else not collected; Spinola described two from 

 Cayenne and Perez one from Caracas, Venezuela. 



Genus COELIOXYS Latreille 



In contrast with the Anthidiines, four out of five were previously 

 known, two extending to the lov/lands of Brazil, two to the coast of 

 Ecuador. 



COEUOXYS EXCISA Friese 



Female. — Riberalta, BoHvia, January (W. M. Mann). This agrees 

 so closely with the description of C. excisa that I can only consider 

 it identical, although the legs, instead of being brown with yellow 

 hair, are mainly black, with knees, tibiae at apex, and posterior fem- 

 ora behind rufous, the tarsi obscurely rufescent, and the hair mainly 

 white, but yellow on inner side of tarsi. Friese records it from Para, 

 Praincha, and Rio Aray olios. 



COEUOXYS BILOBATA Friese 



Female. — I von, Beni, Bolivia, February (W. M. Mann). Friese 

 records it from Tarata, Bolivia; also from Para and Leopoldina. 



COELIOXYS SPATULIVENTER, new species 



Female. — Length about 9 mm. Black, including mandibles (except 

 a faint reddish spot in middle), antennae, and legs; eyes warm red, 

 with transverse pale crimson stripes; tegulae black, with a large 

 rufous spot; wings fuliginous, with dark stigma and nervures; spurs 

 brown. Hair of eyes so short as to be hardly visible with a lens; face 

 and sides of front densely covered with pale fulvous tomentum, suf- 

 fused with brown over upper part of face, but long fringe below clypeus 

 warm light ochreous; clypeus so covered as to entirely hide sculp- 

 ture and margin, but apical margin with three large rounded pits, the 

 mtervals between them appearing dentiform under the dense appressed 

 pubescence; flagellum long; cheeks sharply keeled, entirely covered 

 with hair; mesothorax and mesopleura bounded in front and behind 

 with bands of pale fulvous hair, the posterior band on thoracic dor- 

 sum broken on each side; mesothorax dullish, with very large sparse 

 punctures; scutellum coarsely and very densely punctured, with a 

 median smooth keel; axillar spines short and broad; mesopleura with 



