APPENDIX I. 



CRITICAL ENUMERATION OF ALL THE NORTH AMERICAN TRYPETINA 

 DESCRIBED BY OTHER AUTHORS. 



1. acidusa Walk, very probably belongs to the subgenus Acrotoxa ; 



what Mr. Walker says of the curvature of the end of the third 

 longitudinal vein is evidently to be referred to the fourth vein, 

 and the same remark applies to Trypeta Ethalea Walker, from Para, 

 which follows upon the former in the text. 



2. acutangula Thorns., unknown tome; probably belongs to the sub- 



genus Tephritis. 



3. aenea v. d. Wulp (Tijdschr. voor Ent. 2 Ser. II, p. 157), described as 



T. (Aciura) umea; does not belong to the Trypetidoz at all, but to the 

 Ortalidce, and is synonymous with Chcetopsis cenea Wied. 



4. albiscutellata Harr. has never been described, and, hence, is to be 



stricken out. 



5. antillarum Macq., described by Macquart as Urophora' does neither 



belong to this genus nor to the Trypetidoz in general, but to the 

 Ortalidce ; figure and description agree so little that the identifica- 

 tion will be difficult. 



6. arcuata Walk, is synonymous with Tritoxaflexa Wied. (Ortalidae). 



7. armata R. Desv., published as a Strauzia; this is the male of T. 



(Straussia) longipennis Wied. 



8. asteris Harris is identical with T. (Eurosta) solidaginis Fitch, as 



Baron Osten-Sacken has shown ; the choice of the name depended 

 on an erroneous assumption as to the plant on which the larva 

 lives. 



9. aurifera Thorn., a species unknown to me, belonging to the subgenus 



Ensina. 



10. avala Walk. ; the very insufficient data given by the author do not 



even enable me to decide whether this is a Trypetida or an Orta- 

 lida; even the location of the species in the genus Urophora does 

 not help through this dilemma, because Myennis fasciata Fab. is 

 placed in the same genus, thus proving that Mr. Walker was not 

 cognizant at all of the characters of this genus. 



11. Beauvoisii R. Desv., described as Prionella Beauvoisii ; unknown to 



me, so far that I am unable to decide whether it is a Trypetida or 



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