1S64.] 
391 
the pleura, the scutellum and post-scutellum are dense } tegulse dark ru- 
fo-piceous, smooth and shining; tubercles entirely green-black. Wings 
subhyaline ; nervures black. Legs bluish-black, shining, tarsi clothed 
with yellowish pubescence, apical joints rufo-testaceous; posterior fe¬ 
mora produced beneath into a broad obtuse tooth; tibial spurs testa¬ 
ceous. Abdomen ovate, finely and densely punctured, shining bluish- 
green, apical segment clothed with short pale pubescence; near the pos¬ 
terior margin of the sixth segment above there is an obtuse projection 
which is densely clothed with pale pubescence; apex of the seventh 
segment fringed with rather long pale hairs; ventral segments densely 
and finely punctured, the apical margin of the segments ciliated with 
pale pubescence. Length 4| lines. 
Hah. —Fort Tejon, California. One specimen. Coll. Mr. E. Norton. 
Resembles G. dupla Say, but distinguished at once by the finer 
punctation of the abdomen, and the shape of the posterior femora. 
The tubercles and tip of the tibiae are without the whitish spots which 
are conspicuous in dupla. 
li. C. eximia, Smith. 
Ceratina eximia, Smith, Trans. Ent. Soc. Lond. 3d ser. i, p. 40. (1862.) 
Female. Length 44 lines.—Head and thorax of a bright metallic 
green, and strongly and closely punctured; the flagellum obscurely 
rufo-piceous beneath; an oblong spot on the clypeus and a minute tri¬ 
angular one on each side, cream-colored; the mesothorax with three 
longitudinal impressed lines in the middle, and an abbreviated one out¬ 
side opposite the tegulse; the wings subhyaline, the nervures and 
tegulae ferruginous; the legs pale ferruginous, and thinly covered with 
cinereous pubescence; a minute spot at the apex of the anterior femora 
above, and a line on the tibiae; also a minute spot at the extreme base 
of the posterior tibiae, white. Abdomen bright purple, finely punc¬ 
tured, the three apical segments rugose.” 
Hah. —Panama. 
4. C. placida, Smith. 
Ceratina placida, Smith, Trans. Ent. Soc. Lond., 3d ser. i, p. 41. (1862.) 
Female. Length 3i—4 lines.—Dark bronze color, with tints of 
bright green on the head and thorax; a triangular spot on the clypeus 
anteriorly, and a similar spot on each side of it touching the eyes, the 
latter sometimes continued up the inner orbit of the eyes, yellowish 
