Jensen-Haarup, South. American Apidae. 653 



journeys in remote countries) the author has given two of his 

 new species preoccupied names, as Prof. Cockerell in a letter 

 to me kindly has pointed out. This eminent author states that 

 the name Epeolus hifasciatus (pag. 226) is preoccupied, and must 

 be changed. It was used by C r e s s o n for a species , which 

 Mr. Cockerell believes to be valid, and later also for another 

 (Mexican) species by C a m e r o n. 



For this species I propose the name Epeolus potverillensis 

 n. nom. 



Mr. Cockerell writes me : „Also, it may be possible that 

 Tetralonia luteicornis Jörg, is congeneric with Melissodes (Martinella) 

 luteicornis Cockll. described years ago from New Mexico. At any 

 rate, it would be well to ask Dr. Friese to make comparisons, 

 as he has I think specimens of luteicornis Cockll. The genus 

 Tetralonia, as I restrict it , has 6-jointed maxillary palpi, and is 

 the same as Synhalonia. I think that many of your S. American 

 „Tetralonia" do not properly belong there, but I have not exa- 

 mined their palpi. Judging from superficial appearances I should 

 think T. zebra to be a genuine Tetralonia, but T. Upunctata, flavi- 

 tarsis and crassipes to belong in Melissodes. T. ßavitarsis may be a 

 Martinella. True Tetralonia is a northern , circumpolar genus, 

 which probably only reached S. America in late Miocene times 

 like Elephas etc. Melissodes appears to have originated in S. America, 

 or possibly N. America." 



If Tetralonia luteicornis Jörg, is congeneric with Melissodes {Mar- 

 tinella) luteicornis Cockll. a new name is of course needed , but 

 even if this is not the case, it does not seem to be out of the 

 way to change the name of the species , as further discoveries 

 perhaps may modify the present presumed difference between 

 Melissodes and Tetralonia. 



For Tetralonia luteicornis Jörg. I, therefore, propose the name 

 Tetralonia öörgenseni n. nom. 



Relating the species of Anthidium sens. lat. I beg leave to 

 extract the following from Prof. Cockerells interesting letter : 



Anthidium of both Europe and America divides into two 

 distinct genera : 



Anthidium : Dianthidium : 



Making nests with cottony ma- Making resin nests. With a 

 terial. No pulvillus between pulvillus. 



claws. 



The venation is also different. 



