ART. 12 MEGACHILID BEES FROM BOLIVIA COCKERELL 9 



nervures about equally distant from the transverse cubitals; hind 

 legs black, with slightly reddened knees, hair on inner side of basitarsi 

 pale yellowish; anterior and middle femora black, with the apical part 

 largely red; anterior tibiae and tarsi ferruginous, but middle tibiae 

 black behind; abdomen shining, well punctured, with very pale yel- 

 low markings, consisting of large spots at sides of first two segments 

 (on first rounded, on second elongate and curved) and entire bands 

 on segments 3 to 5; margin beyond the segments and sixth segment 

 black; ventral scopa white. 



Male. — Very similar, but flagellum extremely long, reaching well 

 beyond scutellum; mandibles, clypeus, lateral face marks (broadly 

 dilated and angular mesad below), and markings of thorax lemon 

 yellow; yellow on scutellum only a band, interrupted in middle; 

 anterior and middle tibiae behind with a clear yellow stripe or bar 

 on a black ground; abdomen with four yellow bands, but apex black; 

 apex pointed ; venter with white hair. The scape may be dark at 

 base in front and the band on scutellum entu-e. 



Huachi, Beni, Bolivia, September (W. M. Mann). Described from 

 six specimens. Related to D. gualanense Cockerell, from Guatemala, 

 but that has the scutellum entirely black. 



Type and two paraiypes. — Cat. No. 29081, U.S.N.M. 



Three paratypes in collection of author. 



Genus HYPANTHIDIUM Cockerell 



HYPANXmDIUM BENIENSE, new species 



Female. — Length about 7 mm. Robust, black, with clay-yellow 

 markings on head and thorax and lemon yellow on abdomen; hind 

 margins of abdominal segments broadly reddish brown, but base of 

 first and second segments black; mandibles with yellow basal patch; 

 clypeus yellow with two inverted black triangles, touching basally, 

 on upper part; broad lateral bands, reaching to level of middle 

 ocellus; occipital band entire, extending two-thirds way down cheeks; 

 face and front very densely punctured, with no smooth line; cheeks 

 narrow, not distinctly keeled behind; scape light red; flagellum dusky 

 reddish above, clay yellow beneath, pallid, darkened apically; thorax 

 dull and densely punctured, dorsally with short inconspicuous red 

 hair; spot on tubercles, lateral margins and lateral third of anterior 

 margin of mesothorax, continuous band on axillae and hind margin 

 of scutellum yellov/; area of metathorax not defined; tegulae large, 

 ferruginous, fuscous in middle; wings fuliginous, very dark above 

 bassal nervure and about end of marginal cell; the wings fold 

 longitudinally after the manner of Nectarinia; femora black, anterior 

 ones broadly striped with red apically in front and with a pale yellow 

 stripe behind; middle femora with the same light stripe, but only the 

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