DESCRIPTION OF THE SPECIES. 283 



narrower oral opening; the shape of the body, the striking 

 breadth of the forehead, the distribution of the bristles upon it 

 and upon the thoracic dorsum and scutellum, the shape of the 

 ovipositor, the outline of the wings, and the pattern of the picture 

 are remarkably analogous in both species, so as to preclude a 

 generic separation. 



34. T. latifrons Lw. <?. (Tab. X, f. 22.)— Obscura, capite, tibiia 



tarsisque lutescentibus, fronte latissima, scutello convexo, setis duabus 

 ins true to, alae latiuscula?, colore fuseo-nigro pictse, in disco pare ins et 

 subaequaliter reticulata;, iu diuiidii apicalis uiargiue radiata?. 



Coloring dark ; bead, tibiae, and tarsi clay-yellowish, front unusually 

 large; the convex scutellum with two bristles only; wings rather 

 broad, with a brownish-black picture, upon their middle somewhat 

 sparsely and not very evenly marked with hyaline drops, their apical 

 border radiate. Long. corp. 9 cum terebii, 0.30 ; long. al. 0.27. 



Syx. Trypeta latifrons Loew, Monographs, etc., I, p. 89, 22. Tab. II, f. 22. 



Hub. Carolina (Zimmerman) ; Connecticut (Norton). 



Observation. — A female from Connecticut, communicated to 

 me by Baron Osten-Sacken, is not much better preserved than the 

 female from South Carolina, from which my description in the 

 Monogr. Vol. I was drawn, and for this reason I am not able to 

 give a better one here. Of the two pairs of bristles upon the 

 thoracic dorsum the anterior one has dropped off; it seems to have 

 been inserted rather far behind the transverse suture. The 

 structure of thorax and abdomen, the broad front, the bi- 

 setose scutellum, and the conical, not at all flattened, ovipositor, 

 indicate a relationship between this species and the two preceding 

 ones, from which, however, it differs in the shape of the wings 

 and the pattern of the picture. In the latter two points it 

 reminds one of Trypeta plaUjptera Lw., which differs again in the 

 more narrow front, a four-bristled scutellum, and a flattened ovi- 

 positor. Such being the case, we will be better justified in 

 connecting this species with T. solidaginis and comma, than with 

 T. iilalyptera and its congeners. 



35. T. melaiitira. n. sp. £• (Tali. XI, f. 6.) — Lutea, metanoto, 

 abdominis maculis in series quatuor dispositis et terebia brevi, atris ; 

 caput laetius luteum, fronte latissima, facie modice recedente, antennis 

 longis et acutis ; femora ant^riora macula minuta nigra notatas; alarum 

 pictura fusca, guttis majusculis hyalinis reticulata, quarum in cellula 

 posteriore secunda tres, iu tertia quatuor couglobatae. 



