180 



and ronglily punftiirtMl. bet'>)niiiig even rugose posteriorly. The 6th 

 segment earinate at the acute tip. All coxae, and fore femora out- 

 wardly, green. 



Collected in Belize, British Honduras by M,r. .T. I). .Tohnson, a former 

 student of mine. T had m.Ues of u/nara Cv. taken in Acapulco, 

 Mexico, and at first sup])osed this to be iits female. Hut it is very dif- 

 ferent in details of structure and coloration, and is one of the most 

 striking of the known Anierican species. 

 .5988 Ceratina marginata n. r{ . 



l^'emale: Length 7..^ mm. Entirely deop black, with a tinge of 

 green on vertex, lateral an,':jlps of mesonotum, scntellu.m, and meta- 

 notum. Antennae and legs black, tibiae piceons, tarsi ferruginous. 

 Pubescence white and pale fei-rugineous. Wings smoky, broadly and 

 densely so along the anterior margin, this band completely filling the 

 marginal cell and reaching the tip .>f the wing; veins paler cauda(|, 

 towards the costa "very dark, the stigma entirely opaque. First . sub- 

 marginal cell slightly more than twice length of second below, but 

 first abscissa of radius distinctly shorter than third. 



Head very coarsely but not veiy thickly jnmctured, most densely 

 so on vertex, most openly so on rlypeus, the interspaces smootli and 

 shining. The yellow mark on clypeus is long and narrow, two-thirds 

 the length of clypens and narrowed caudad; it nearly renches the 

 front margin of clypeus. Lal)runi and mandibles black. No iinpunctnte 

 areas on cheeks. Hind ocelli nearer to occipital margin than to eyes. 

 The gular region nearly impunctate, and on either side at about the 

 center is a short stout conical tooth. 



The mesonotum is smooth anci shining above, with a very few scat- 

 tering punctures, its nmrgins, especially the lateral angles, with very 

 fine and dense puncturation. The puncturation on disc of scutel is 

 sparse, while on postscutel it i-; reduced to a fine opaque microscopic 

 roughness over the whole surface- Propleuvae finely ])unctate below, 

 thickly longitudinally wrinkled on the upper half. Upper area of 

 metanotum not clearly margined posteriorly, depressed medially where 

 there is a fine median carina; on either side are a number of very 

 short wrinkles. Troni these, over the whole disc of metanotum the 

 surface is impunctate and coarsely sha.gi-eened. The tegulae are 

 piceous, the tubercles black. First abdominal tergite smooth, shining, 

 nearly impunctate; 2nd and 3rd thickly coarsely punctured, more spar- 

 sely so along the discal areas, and more finely so basally; the 4th, 

 5th and 6th are very thickly, and very roughly double punctate. There 

 is no median carina on the short acute terminal point. Tarsi pice jus. 

 to ferrugineoiis on the last article. 



Collected in Belize, British Honduras, by Mr. J. D. Johnson. 



This in a remarkably distinct species, entirely unique in the gular 

 armature and wing coloration. 



