58 DIPTERA OF NORTH AMERICA. 



5. armata R. Desv., published by the author as Strauzia armata, is Trgp. 



longipennis Wied. $, . 



6. asteris Harr.; the description being unfortunately inaccessible to 



me, I can say nothing about it. The name is preoccupied by Mr. 

 Haliday. 



7. avala Walk., quite, unknown to me ; Mr. Walker's statements are not 



sufficient to decide whether it belongs to the Ortalidse or not. 



8. beauvoisii R. Desv.; the description is too bad to allow its true 



position to be determined ; but it is certainly not among the species 

 known to me. 



9. caliptera Say is Tryp. sparsa Wied. ; the older name deserves the 



preference, the more so as that of Say is not correct. 



10. cinctipes Harr. is an undescribed species, and must be therefore 



omitted. 



11. comma Wied. a good species and readily recognizable ; not possessing 



it, I cannot give a more detailed description ; but having seen it in 

 some collections, I subjoin a fugitive sketch of the reticulation of 

 the wing (Tab. II, fig. 28), trusting trfat by this figure and Wiede- 

 mann's description the species will be recognized. It is not quite 

 certain whether Macquart's Acinia comma is the same, since he says 

 that the posterior border of the wings has a large clear spot, which 

 was not the case with the individuals of the genuine Tryp. comma 

 Wied. which I have seen. The clear drops near the end of the 

 sixth longitudinal vein being very much crowded, their eventual 

 coalescing into a larger clear spot does not seem impossible. 



12. cornigera Walk, is identical with Tryp. longipennis Wied. 



13. cornifera Walk, is a, slight variety of Tryp. longipennis Wied., in 



which the bands of the posterior border of the wings are obsolete, 

 which is not seldom the case. 



14. culta Wied. (not cutta, a misprint corrected by Wiedemann himself). 



It is a relation of the European Tryp. reticulata Schrauk, and Wiede- 

 mann's description is sufiicient for recognizing this species. On 

 Tab. II, fig. 29, I subjoin a sketch of the reticulation of the wings, 

 which I made several years ago ; though the circumference of the 

 wing may not be quite correct, yet the species will, I hope, be recog- 

 nized from it. 



15. dinia Walk, seems to be a Trypeta related to the European Tryp. 



rotundiventris Fall., tibialis R. Desv., etc. It may stand nearest to 

 Tryp. insecta, the description of which follows hereafter. 



16. electa Say will be exactly described in the sequel. 



17. fimbriata Macq. is Tryp. culta Wied. 



18. flavonotata Macq. is Tryp. electa Say. 



19. flexa Wied. is by no means a Trypeta, but an Ortalis not rare in 



collections. 



20. fucata Fabr. seems to be a true Trypeta, but will be rather hard to 



recognize, unless an original specimen can be compared. 



