Bees from New Mexico, U.S.A. 67 
Of the species found in New Mexico, it resembles only 
» pruinosus. 
- 
(6) Halictus meliloti, sp. n. 
9. Length about 63 millim. 
This very closely resembles 
fasciatus, and is only to be distinguished by a comparative 
description :— 
fasciatus. 
Vertex more depressed, dark 
bluish green, more coarsely punc- 
tured. 
Mesothorax dark bluish green, 
median groove very distinct. 
Second submarginal cell but 
little higher than broad. 
Sculpture of enclosed space of 
metathorax rather coarser and a 
little more punctiform. 
Apical bands of first two seg- 
ments of abdomen distinct, though 
interrupted in the middle. 
meliloti. 
Vertex more rounded, strongly 
bronze-green or olive-green, more 
finely punctured. 
Mesothorax bronze-green or olive- 
green, median groove indistiuct. 
Second submarginal very dis- 
tinctly higher than broad. 
Sculpture of enclosed space of 
metathorax consisting of very fine 
longitudinal grooves. 
Apical bands on first two seg- 
ments of abdomen hardly percep- 
tible, those on segments 3 and 4 
distinct. 
Hab. College Farm, Mesilla Valley, N.M., May 1, 1895; 
swept from Melilotus indica. Of the New-Mexico species, 
meliloti resembles tripartitus, but is at once distinguished by 
the colour and shape of the head. 
(7) Halictus semibrunneus, sp. n. 
@. Length about 5 millim. Shiny; head and thorax 
dark blue; abdomen piceous, with the segments faintly testa- 
ceous at apical margins. [ace broad, inner orbits nearly 
parallel, cheeks unarmed. Pubescence of head, thorax, and 
abdomen sparse, short, whitish ; on abdomen largely covering 
the bases of the second and third and the whole dorsal surface 
of the fourth and fifth segments. Flagellum dark reddish 
brown. Vertex very finely punctate. Mesothorax very shiny, 
with rather large but sparse punctures, median groove distinct, 
Scutellum shiny, sparsely punctured; postscutellum not 
tomentose. Upper portion of metathorax not enclosed by a 
raised line, very minutely roughened, very obscurely striatu- 
late. Abdomen impunctate. Legs dark, ordinary. Wings 
hyaline ; nervures and stigma pale honey-yellow ; third sub- 
marginal narrowed less than half to marginal. 
Hab. College Farm, Mesilla Valley, N.M.; taken on the 
5x 
