Monographie der Bienengattungen Exomalopsis, Ptilothrix, Melitoma und Tetrapedia. 269 



35. Exomalopsis testacea Sm. 



1854. Exomalopsis testacea Smith, g, Catal. Hymen. Brit. Mus., II, pag. 365, Nr. 5. 



»0. Head and thorax rufo-testaceous, the flagellüm and labrum pale testaceous. 

 Thorax; the wings clear hyaline, the nervures and tegulae pale testaceous, the disk mar- 

 gined with yellowish-white pubescence; legs pale testaceous; the posterior legs have a 

 dense yellowish-white scopa. Abdomen pale ferruginous, the 2. — 3. segments have on 

 each side an oblique line of white pubescence; the sides and the apex fringed with 

 white pubescence. Long. 3 lines (= 6*/ 2 Mm. lang). 



»ßrazil.« 



36. Exomalopsis flava Sm. 



1879. Exomalopsis flava Smith, g, Descr. New Spec. Hymen., pag. 127, Nr. 6. 



»g. Length 3 lines. Yellow; slightly reddish yellow on the vertex and mesothorax, 

 palest on the clypeus and metathorax; the labrum, mandibles, and cheeks are also pale; 

 the clvpeus with strong punctures. The mesothorax with a central longitudinal im- 

 pressed line, with a pale stripe on each side of it; wings hyaline and brightly iridescent; 

 the nervures, Stigma, and tegulae yellow; the scopa on the posterior legs pale fulvous. 

 Abdomen smooth, shining, and impunctate (= 6 x / 2 Mm. lang). 



»ßrazil, St. Paulo.« 



37. Exomalopsis sidae Cockll. 



1897. Exomalopsis sidae Cockerell, Trans. Amer. Ent. Soc, XXIV, pag. 160. 



»g. Length 8 mm., rather stout, very shiny. Head, thorax and legs black. Ab- 

 domen red; face about square, orbits parallel, vertex smooth and impunctured, clypeus 

 rather obscurely punctured; face with sparse, appressed, white pubescence, a dense, 

 suberect, brush of the same just above the antennae; vertex with a few erect hairs, 

 which, in the specimen described, have entangled a mass of Sida pollen; labrum with 

 a fringe of yellowish hairs; mandibles simple, grooved without, dark rufous medially; 

 first three joints of maxillary palpi conspicuously stouter than the other three; flagellüm 

 dark brown beneath, funicle oval. Thorax sparsely punctured, nearly nude, except 

 lines or bands of white pubescence along hind margins of prothorax and scutellum, 

 and covering postscutellum, and similar pubescence on tubercles, pleura, and more or 

 less on sides of metathorax; tegulae testaceous. Wings hyaline; Stigma pale orange- 

 brown, nervures fuscous, contrasting, costal nervure black, second submarginal cell 

 nearly square; venation as in E. solani; small joints of tarsi rufous. Legs with white 

 pubescence; the abundant scopa of hind legs pale fuscous, very strongly plumose, car- 

 rying an enormous quantity of the pale yellow pollen of the Sida. Abdomen pyriform, 

 almost impunctate, rufous; first two segments bare and shining, except a patch of ap- 

 pressed white pubescence on each side, and erect white hairs at base of first; third and 

 fourth segments almost covered with appressed white pubescence, fifth with long, de- 

 pressed, white hairs; extreme apex with some fuscous hairs; pygidium transversely 

 lineolate; ventral segments with thin fringes of oblique pale hairs, which carry very 

 little pollen. 



»cT. Length about 7 mm., wholly shining black, except the flagellüm rufescent 

 beneath, the claw-joints of tarsi rufous, the mandibles medially dark rufous; and the 

 very broad low clypeus and the labrum wholly pale primrose yellow; dorsum of thorax 



