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 this a variety of episcopalis ; but the good series 
indicates a distinct species. 
Colletes speculiventris, sp. n. 
¢ .—Length 8:5 mm. 
Black, rather slender, the tarsi obscurely reddish ; 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 axille ; mesothorax shining, strongly punctured ; base of 
metathorax with a series of very large smooth quadrate areas, 
separated by ridges; tegule 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. Fiebrig, 2302). 
U.S. Nat. Museum. 
This looks like a small C. argentinus, Friese, until the 
entirely different sculpture of the abdomen is observed. In 
Friese’s table (1912) it runs nearest to C. laticeps from Chile. 
In Joergensen’s table it runs nearest to C. schrottky:, from 
which it is easily known by the dark hair on scutellum, 
Pasiphaé chrysostoma, sp. n. 
6 .—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 
Colletes ; mandibles black; front minutely punctured, the 
lower part tufted with long yellowish hair; antenne short; 
a smooth shining space on each side of the ocelli ; mesothorax 
smooth and shining, scarcely punctured; area of metathorax 
