438 Mr. T. D. A. Cockerell — Descriptions and 



punctured first abdominal segment. The species is actually 

 nearest to P. episcopalis, CklL, from which the male is readily 

 known by the less rugose area of metathorax and the orbits 

 diverging more widely above. The mesothorax is rougher 

 and more coarsely punctured than in episcopalis, but the 

 difference is not important. Had I only a single specimen, I 

 might think tliis a variety of episcojialis ; but the good sevies 

 indicates a distinct species. 



Colletes speculiventris, sp. n. 



(^ . — Length 8'5 mm. 



Black, rather slender, the tarsi obscurely reddisli ; face 

 with pale ochreous-tinted hair, cheeks with white ; clypeus 

 exposed, glistening, densely striato-punctate, with a broad 

 subapical depression ; malar space distinctly broader than 

 long, but not nearly twice as broad ; labrum with a series of 

 vertical sulci and a small median pit ; mandibles red apically ; 

 flagellum long, very obscurely brownish beneath, the middle 

 joints much longer than broad; hair of thorax dull white, 

 but dark fuscous on scutellum, contrasting with the white of 

 the axillse ; mesothorax shining, strongly punctured ; base of 

 metathorax with a series of very large smooth quadrate areas, 

 separated by ridges; tegulse dark reddish. Wings dusky; 

 second s.m. very broad, receiving first r. n. in middle. Legs 

 ordinary. Abdomen highly polished and shining, the 

 segments with rather narrow apical white hair-bands ; ventral 

 segments with white hair-bands, broad at sides and very 

 narrow in middle. 



San Bernardino, Paraguay, Dec. 20 {K. Fiehrig, 2302). 

 U.IS. Nat. Museum. 



This looks like a small C. argentinus, Friese, until the 

 entirely different sculpture of the abdomen is observed. lu 

 Friese's table (1912) it runs nearest to C. laticeps from Chile. 

 In Joergensen's table it runs nearest to C. schrotthyi^ from 

 which it is easily known by the dark hair on scutellum. 



Pasiphae chrysostoma, sp. n. 



(J . — Length about 7 mm. ; anterior wing 6. 



Black, the flagellum dull reddish beneath except at base, 

 the tarsi apically brownish ; head subcircular, thick ; clypeus 

 densely covered with shining pale golden hair ; tongue as in 

 Culletes ; mandibles black ; front minutely punctured, the 

 lower part tufted with long yellowish hair ; anteuuse short; 

 a smooth shining space on each side of the ocelli ; mesothorax 

 smooth and shining, scarcely punctured ; area of metathorax 



