165 



HARRIS TO DOUBLEDAY. 



Cambridge, Nov. 17, 1842. 



Whether we shall be able to identify his [Newman's] species 

 (in the " Entomologist ") I cannot tell; and I fear that in some 

 cases he may have raised varieties to the rank of species, and 

 may have re-named and re-described some old species. I re- 

 member an error of his. Leptura zebrata of Fabr. is not identi- 

 cal with the zebra of Olivier. One is exclusively a Northern 

 and the other a Southern species. I have both in my collec- 

 tion, and each exactly agrees with the original description. 



The name Polyommatus pseudargiolus must be applied exclu- 

 sively to the Southern species, if the Northern blue species is 

 distinct from it. Deutargiolus would be a good name for the 

 Northern species. ^ Your specimens will enable you to point 

 out the distinctive characters, which I shall be glad to see from 

 your own observations, as well as those by which you separate 

 Argynnis Aphrodite from Cyhele. 



HARRIS TO DOUBLEDAY. 



Cambridge, Feb., 1844. 



For more than a year I have made only two entomological 

 discoveries of any consequence. One of these is finding, in 

 September, Anthribus fasciatus Olivier, an insect unknown to 

 Schonherr, which heretofore I had supposed to be a rare and 

 exclusively Southern species. I have obtained several speci- 

 mens from a black, spherical fungus, stroma to Sphceria concen- 

 trica, growing on the Platanus occidentalis. The larva in- 

 habits and undergoes its transformations in this fungus, which 

 affords food to it and to the perfect insect. The Anthribidce 

 have generally been supposed to be parasitical insects ; but this 



' [It has since been named L. neglecta by Mr. W. H. Edwards.] 



