324 NORTH AMERICAN TRYPETINA. 



Cent. II, after a North American female in the Winthera collec- 

 tion. I have received since several specimens of a Cuban Try- 

 peta from Mr. Gundlach, which I suppose to be the same species. 

 They are somewhat smaller, have a more extended blackish 

 coloring, and the incomplete gray reticulation of the proximal 

 half of the wing is considerably darker towards the posterior 

 margin. Unfortunately, I have not the original specimen of the 

 Winthem collection at hand for comparison, and, therefore, can- 

 not finally decide about the specific identity. In the figure of 

 the wing, the gray reticulation of its proximal half is represented 

 by the engraver as too distinctly guttate, in fact more so than is 

 the case in either the Cuban or in the typical specimen. 



Observation 2. T. abstersa belongs in the genus Urellia, and 

 in the group of species having four bristles upon the scutellum. 

 The more developed picture on the basal half of the wing requires, 

 however, that it should be placed on the limit of this genus and 

 in the close relationship of T. pura and similar species. 



59. T. polycloiia n. sp. > Albido-cinerea, capite pedibusque 

 flavis ; setae scutelli quatuor ; alse hyalinse, prseter dirnidii apicalis 

 maculam magnara nigram, radios novem emittente, duos in costam, 

 duos in apicem et quinque in marginem posticuui excnrrentes. 



Whitish-gray, head and feet yellow. Scutellum with four bristles ; wings 

 hyaline, upon their distal half with a large black spot, which emits 

 nine rays, namely, two to the anterior margin, two to the apex, and five 

 to the posterior margin. Long. corp. cum terebra 0.15 ; long. al. 0.14. 



Of this handsome species I possess only a single, rather worn, 

 specimen. Head yellow, of the same structure as in T. abstersa, 

 only the front comparatively narrower. Thorax, scutellum, and 

 the whole abdomen whitish-gray. The bristles on the scutellum 

 are broken off, nevertheless it is apparent that they were four in 

 number. Ovipositor black, somewhat longer than the last two 

 abdominal segments taken together. Feet yellow. Wings 

 whitish-hyaline, upon their distal half with a large spot, emitting 

 nine rays towards the margin of the wing ; the spot is a little 

 removed from the small crossvein, near which, in the first basal 

 cell, there is an irregular blackish spot; the first ray runs from 

 the anterior end of the small crossvein in an oblique direction 

 through the otherwise colorless stigma, to the costal vein, which, 

 at the place where it is thus reached, has a conspicuously black 



