Dec. 1899.] COQUILLETT : On NoRTH AMERICAN TRYPETIDyE. 25'.* 



Aspidistus scutiformis Ckll. — On a Citrus fruit from Acapulco, 

 Mexico. (]om. Craw, who quarantined it at Safi Francisco. 



Aspidistus dictyospermi Morgafi. — On Pandamus in green- 

 house, Santa Fe, New Mexico. Coll. Ckll. On Areca lutescens in 

 greenhouse, Columbus, Ohio. Coll. J. S. Hine. Also found at 

 Columbus in 1896 by Prof. Bogue. 



NOTES AND DESCRIPTIONS OF TRYPETIDiE. 



By D. W. Coquillett. 



In the Wiener Entomol. Zeitung for 1882, page 192, Osten 

 Sacken states in substance that Trypeta, Meigen, 1803, is a synonym 

 q{ Trupanea Guettard, 1756, and of Schrank, 1798. Guettard used 

 the term in a popular sense, and did not refer to any previously 

 described species, nor did he give specific names to any of the species 

 of which he wrote. His paper, therefore, must be regarded as a 

 popular one, which does not in the least affect our binomial nomen- 

 clature. Moreover, it appeared two years earlier than the tenth edi- 

 tion of Linne's Systema Naturae, which the majority of naturalists 

 have adopted as the starting point of our nomenclature. 



As to Trupanea Schrank, Osten Sacken overlooked the fact that 

 this genus appeared in the third volume of that author's work, which 

 was published in the year 1803, the same year in which Trypeta 

 appeared. In a case of this kind, later writers are at liberty to choose 

 either of the two names ; and since Trypeta has been very generally 

 adopted in the past, there is no good reason for not following this 

 course. 



At the time of treating of our Trypetid?e, Dr. Loew separated 

 them into smaller groups which he sometimes referred to as genera 

 but quite as often as subgenera, and as subgenera they are listed in the 

 Osten Sacken catalogue. By changing some of the species, however, 

 the greater part of the groups proposed by Loew are well worthy of 

 being considered as valid genera. 



Acrotoxa Loew, is a synonym of Anastrepha Schiner, as given in 

 the Osten Sacken catalogue ; but the African genus Leptoxyda, or 

 Leptoxys Macquart, which is also given as a synonym, evidently is 

 not the same genus, owing to the course of the fourth vein. The 



