132 E. T. CRESSON. 



Bmooth on disk, and with five finely impressed longitudinal lines; scutelluni 

 finely and closely punctured, and with the metathorax and pleura strongly 

 tinged with green and more or less clothed with pale pubescence; metathorax 

 smooth, slightly roughened at extreme base ; tegulse piceous ; wings tinged with 

 dusky, nervures black; legs piceous, clothed with pale pubescence, most dense 

 on posterior pair; abdomen much narrowed towards base, strongly tinged with 

 green, especially at tip, base of segments 2 — 4 seneous, base of two densely, and 

 three and four sparsely punctured, the two apical segments densely roughened, 

 apex pointed in the middle and fringed with long pale pubescence. Length 

 .45 inch. 



%. — Anterior margin of clypeus, dilated upwards on disk, dot on each side 

 of face, labrum and spot at base of mandibles, whitish; face strongly tinged 

 with blue; thorax thinly clothed with pale pubescence, postseutellum and 

 metathorax blue-green, mesothorax closely punctured; tegulfe pale piceous; 

 abdomen with first segment and apical margin of following segments blue, 

 basal margin of the segments smooth and impunctured; apical segment with an 

 acute spine at tip, the lateral margin reflexed; venter blue. Length .40 inch. 



Ifab. — Mexico, (Sumichrast). Two specimens. 



Ceratina ignara. — 9 • — Shining black, head and thorax strongly tinged 

 with steel-blue, the abdomen with olive-green, sometimes golden at apex ; head 

 larger than usual, strongly punctured, cheeks smooth and polished; clypeus 

 with an elongate yellowish mark, sometimes reduced to a dot or line; flagellum 

 subtestaceous beneath ; thorax finely punctured, disk of mesothorax smooth and 

 polished, and with five finely impressed longitudinal lines; extreme base of 

 metathorax above depressed and rugose, the pubescence of thorax short, thin 

 and pale; tegulse piceous; wings more or less strongly fuscous, generally paler 

 at base, nervures black; legs with pale pubescence, a yellowish dot at extreme 

 base of all the tibise; abdomen shining, narrowed towards base, first segment 

 polished, impunctured, second, third and fourth minutely punctured, apical 

 segments densely roughened, the tip pointed and fringed with long pale hair; 

 venter green. Length .30 — .35 inch. 



Hub. — Mexico, (Sumichrast). Eight specimens. 



Ceratlna CObaltilia. — %. — Brilliant dark blue, changing in certain 

 lights to green and purple; head coarsely punctured; spot on lower side of 

 face, apical margin of clypeus, dilated medially, labrum, and mandibles except 

 tips, white; antennae black, the flagellum brownish beneath; posterior margin 

 of head acutely carinate; thorax finely and closely punctured, sparsely so oa 

 pleura, base of metathorax minutely sculptured, a little pale pubescence on 

 each side of scutellura and of metathorax; wings hyaline, faintly dusky at 

 tips, veins fuscous; legs tinged with brown, thinly clothed with pale pubes- 

 cence, anterior knees and stripe on their tibise white; abdomen strongly tinged 

 with purple, the base of second and third segments with a golden reflection in 

 certain lights, finely punctured, the apical segments coarsely sculptured and 

 with a scattered pale pubescence; apical segment obtusely bidentate at tip. 

 Length .32 inch. 



Hab. — Mexico, (Sumichrast). One specimen. A very pretty 

 species, resembling cyaniventris Cress., (from Cuba), in color, but is 

 much larger. 



