9 



Mr. Say proposes to me to publish those two insects, but he is 

 now gone to the West, and may not return for some time, so 

 that I would advise you to do it yourself if you are inclined. 



Of Vanessa C-alhum I have not sufficient recollection to 

 assist you ; but would rather be inclined to think that the 

 American butterfly is a distinct species. Several insects which 

 wovild have appeared to me to be the same as the European, 

 before examination, proved to be quite distinct when compared 

 carefully. 



Cieindela sexguttata I have frequently observed, and have 

 many accidental varieties. The color varies from a deep blue 

 to a bright green. I have several with the additional spot 

 which you mention ; but if you examine your specimens with 

 care you will, I think, discern that mark, or a faint trace, in 

 most of them. 



I have Carahus silvosus, which I recognized by your de- 

 scription, and named it thus in my cabinet ; but I have a 

 beautiful Caloso7na closely allied to O. silvosus, in shape and 

 color; it is, however, much smaller, and has no violet mar- 

 gin ; I have reasons to think that species very rare, and 

 possibly not described. (Is it Calosorna obsoleta Say ? Journ. 

 p. 149. T. w. H.) Oh ! why must we live at such a distance 

 from each other? What pleasures we might enjoy together. 

 I feel the want of books still more than you do. You have 

 access to libraries, and can consult Olivier's valuable work. 



Omophron lahiatum is quite common here in May. 



HARRIS TO HENTZ, 



Milton, Feb. 6, 1826. 



So long a time had elapsed since my last letter without my 

 having heard from you, that I had made some examination of 

 the mouth of Chremastocheilus in order to enable me to com- 

 plete the paper which I had drawn up, [PI. iv, figs. 7"-T''.] 



