North-American Bees. 447 
Trans. Am. Ent. Soc. 1893, p. 339, as N. fragilis, Cresson, 
is (at least as represented by the single specimen I have 
kept) N. ctvilis. 
Nomada accepta, Cresson. 
I have this species from Colorado Springs, Colorado 
(L. Bruner, 24). WN. pacata, Cresson, is a synonym; I 
determined this from the descriptions, and Mr. Viereck has 
confirmed it by a comparison of Cresson’s types. 
Melissodes humilior, sp. n. 
? .—Length hardly 10 millim. 
Black with pale pubescence, white on the underparts of 
head and thorax, stained with pale ochreous on the upper 
parts, black on scutellum and hind part of mesothorax; a few 
black hairs on sides of vertex, which is broad and shining ; 
facial quadrangle broader than long ; clypeus confluently 
punctured; eyes pale grey; flagellum ferruginous beneath, 
except the first two joints; tegule piceous. Wings only 
faintly dusky, not darkened apically ; nervures dark brown ; 
third submarginal cell abruptly truncate. Legs clothed with 
white or whitish hair, the scopa on hind legs very large and 
dense ; hair on outer side of anterior tarsi very dark purplish 
fuscous, in strong contrast with the white hair on outer side 
of middle tarsi; hair on inner side of tarsi dark shining 
ferruginous. Abdomen broad, the base and sides of first 
segment with white hair; the second to fourth segments with 
broad bands (especially broad on fourth) of appressed white 
hair ; base of second segment with some white hair; basal 
part of third and fourth segments covered with velvety-black 
pile ; apical segments with black hair. In my table in Bull. 
Denison Lab. xi., this runs to M. gilensis, but it is con- 
siderably smaller, the abdominal bands are white instead of 
yellowish, and there are other differences. 
Hab. Organ, New Mexico, Sept. 28, alt. 5100 feet (Cuck- 
erell). 
ae example, taken by Prof. C. H. T. Townsend at 
Las Cruces, N. M., Aug. 19, differs by having the second 
submarginal cell larger, the hair on the anterior part of the 
mesothorax quite strongly fulvous, the vertex covered with 
black hair, and the hind tarsi red, as also the small joints 
of the middle tarsi. The wings have a milky iridescence, 
This form may be known as var. a. 
The species recorded from the Mesilla Valley, N. M., as 
M. intermedia, Cresson (having been identified by Mr. Fox), 
