1928] 
Bees Collected by Nathan Banks 
179’ 
shining with coppery tints in middle, punctures distinct under 
lens, parapsidal grooves distinct; scutellum and area of meta- 
thorax shining, postscutellum dull and dark; hair of thorax, 
above dull white, inconspicuous; abdomen shining, very thinly 
hairy, but quite without hair bands or patches. 
Bella Vista, Aug. 7, 1924. Several species are more or less similar 
to this ,as follows: 
H. exiguiformis Ellis agrees in area of metathorax with 
basal plicae, and is really a very similar species, but it does not 
have the clear red tarsi. H. tropicior Ellis has the red hind tarsi, 
but disc of mesothorax is posteriorly sparsely punctured, and 
not tesselate, but smooth and polished. H. lesseppsi has it tes- 
selate all over. H. chrysonotus Ellis also has red tarsi, but the 
area of metathorax is unlike that of any of the Panama species; 
the mesothorax is much more shiny than in H. lesseppsi. The 
tegulae are quite a different color from those of H. balboce. H. 
tenax Sandh. (Colorado) has a similar metathoracic area, but 
is otherwise different. H. umbripennis Ellis (Guatemala) has a 
red stigma and is quite distinct. H. deceptor Ellis (Guatemala) 
has plicae of metathoracic area weak and only going one third of 
way toward margin, but is otherwise quite different. H. indis- 
tinctus Crawf falls near here by area of metathorax, but legs are 
all dark. H. exiguus ^Smith differs by the much longer head,, 
smoother and more polished mesothorax, and pale stigma. 
Halictus gorgasi sp. n. 
Female. Length about 6 mm.; wings short, anterior wing 
about 3 . 6 mm. ; head and thorax dull brassy green, with very 
little hair; head broad, clypeus not much produced; apical half 
of mandibles dark red; clypeus short; clypeus and sides of face 
with very strong punctures; front dull, very densely punctured, 
the punctures tending to run into striae; apical part of flagellum 
dull red beneath; mesothorax dull, very strongly and coarsely 
punctured, with slight coppery tints ; scutellum more finely punc- 
tured, and shining on each side of middle; area of metathorax 
coarsely wrinkled; posterior face of metathorax dullish, coarsely 
sculptured, more or less striate, its lateral margins sharply de- 
