958 Charles Paul Alexander 



T. maculipennis Say is pi'obably T. anguslipennis Loew but the species 

 is in doubt. Specimens in the Harris collection of the Boston Society 

 of Natural History are determined by Say, the not of the original series, 

 and these are T. anguslipennis or close to it. However, the description 

 of the species shows that it differs in several important respects from all 

 specimens of T. anguslipennis that the writer has seen, and it seems 

 that the species must for the present remain in doubt. 



