49 
(10) Anoplodera sexmaculata Linn., 1758, Systema Nature®, ed. 10-1, p. 398. 
seminigra Csy., 1924, Mem. on the Coleop., vol. XI, p. 283. 
Length 8 to 11 mm. This species, described over 160 years ago, may 
still be found in many collections in series of instabilis Hald. It may be 
distinguished from instabilis by the less robust form and the other char- 
acters given in the key, and by the mesal portion of the postbasal black 
band being reduced to a longitudinal spot, usually covering the suture. 
The last ventral and last dorsal segments are rounded in both sexes. 
L, seminigra Csy. is a female, black, with narrow yellow bands. 
Two hundred and six specimens have been seen from British Columbia, 
Alberta, Manitoba, Quebec, Ontario, New Brunswick, Massachusetts, 
Minnesota, Michigan, and Washington. Colorado, New Hampshire, and 
northern California are also cited in literature. The species is found 
throughout the northern hemisphere. 
Type locality: Europe. 
(11) Anoplodera tribalteata Lee., 1874, S.M.C., No. 264, p. 224. 
serpentina Csy., 1891, Ann. N.Y. Acad. Sci., vol. VI, p. 41. 
Length 8 to 12 mm. There is -considerable variation in the transverse 
markings of the elytra. A. tribalteata can easily be recognized by the 
profuse, bright, golden-yellow vestiture. The last ventral is broadly 
rounded, the last dorsal feebly emarginate. 
Anoplodera serpentina Csy. is possibly a distinct species, differing 
from tribalteata in the much longer and more slender antennas, attaining 
the posterior margin of the third black, elytral band or beyond in the male 
and well beyond the middle of the elytra in the female. The type (cf) 
and No. 3 in the type series have the elytra coarsely, sparsely punctate 
and shining, whereas Nos. 2 and 4 have the elytra closely, finely punctate, 
as usual in tribalteata . The type has the pronotum impressed on the 
median line, with small, rather sparse punctures. These characters are 
somewhat variable in tribalteata. 
Forty-seven specimens were examined from Hope mountains, British 
Columbia, and California. Other localities cited in literature: Nevada 
and Idaho. 
Type locality : Owens valley, California. 
(12) Anoplodera coquilletti Linell, 1898, Proc. U.S. Nat. Mus., vol. XIX, 
p. 398. 
Dr. Van Dyke states that coquilletti is only a form of tribalteata Lee. 
The authors have before them a male from Mr. Linn ell’s type series which 
appears doubtfully distinct. The vestiture is shorter and of different 
colour. The necessity for the collection of paired specimens in the field is 
here exemplified. L. coquilletti is a southern form certainly very closely 
related to tribalteata Lee. 
Type locality: Wilson Peak, Los Angeles county, California. 
(13) Anoplodera amabilis Lee., 1857, Ent. Kept., p. 64. 
Length 5 to 9 mm. A little known species, smaller and more slender 
than tribalteata Lee., without the golden vestiture, especially on the test- 
aceous maculation of the elytra. The antennae are longer and more slender 
than in tribalteata and the yellow elytral bands are in many cases reduced 
to spots, as occurs in the type. The last dorsal and ventral segments are 
emarginate in the female, rounded in the male. 
