21 
We cannot separate these forms by any constant characters, other 
than the red humeri and, although they may eventually prove to be distinct, 
they are left in this paper, tentatively, under the name molybdica Lee. 
Thirty typical molybdica have been before us, from California and 
British Columbia, and forty-eight of the form militarise all from California. 
Other localities given in literature: Nevada and Oregon. 
Type locality of militaris: “Rocky mountains.” 
Type locality of molybdica: “San Francisco.” 
(3) Grammoptera exigua Newm., 1841, Ent., p. 73. 
nana Newm., 1841, Ent., p. 73. 
saucia Lee., 1862, Proc. Acad. Phila., p. 40. 
Length 4 to 7 mm. The short, almost quadrate prothorax, feebly mar- 
gined apically, and reddish golden pubescence of the pronotum, distinguish 
this species from the subargentata group. The pronotum may be entirely 
black or black with red margins. The legs are variously bicoloured or 
black. 
Fifty-nine specimens have been examined from New York, Massa- 
chusetts, Pennsylvania, Michigan, Quebec, and Ontario. 
Type locality: Trenton Falls, N.Y. 
(4) Grammoptera haemetites Newm., 1841, Ent., p. 73. 
Length 3 to 6 mm. This species may generally be distinguished by 
the entirely red prothorax and the absence of the tubercle on the last ventral 
of the female. The legs are variously bicoloured, a common character in 
several species of this group, and not, apparently, of specific importance. 
Thirteen specimens are before us from North Carolina, Pennsylvania, 
Massachusetts, New York, Quebec, and Ontario. In literature, Illinois 
is cited. 
Type locality: Trenton Falls, N.Y. 
(5) Grammoptera subargentata Kirby, 1837, Faun. Bor. Am., vol. 4, p. 184. 
similis Kirby, 1837, Faun. Bor. Am., vol. 4, p. 185. 
rufibasis Lee., 1862, Proc. Acad. Phila., p. 40, 
Length 6 to 8 mm. Several species are generally included under this 
name in collections. Mr. C. A. Frost and Dr. Nathan Banks very kindly 
compared selected specimens with the type and homotypes in the Leconte 
collection. Based on these comparisons and a subsequent study of the 
Leconte collection by the writers the synonymy given above has been 
adopted. The inconspicuous vestiture of the elytra, which are rather 
rtrongly shining, separate subargentata from the other species of the group, 
except rhodopus. The legs may be variously bicoloured or entirely black. 
Thirty-seven specimens are before us, many of them from the vicinity 
of the type locality. The localities represented are: British Columbia, 
Alberta, Manitoba, Ontario, Quebec, and Ohio. In literature Alaska is 
cited. 
Type locality: Canada, latitude 65 degrees. 
(6) Grammoptera rhodopus Lee., 1874, Trans. Am. Ent. Soc., p. 68. 
Length 6 ■ 5 mm. An examination of the type in the Leconte collection 
has convinced us that this species is distinct. The pronotum has the sides 
subparallel from the base to beyond the middle, arcuately narrowed, not 
