21 



Description. Antenna green at base. Head cupreous, with 

 two green abbreviated lines between the eyes ; mandibles white 

 at base, black at the points ; lip white, with a single tooth. 

 Thorax cupreous obscure, with the margin and breast 

 green. Elytra obscure, somewhat cupreous, lunules and spots 

 greenish white. Abdomen green, terminal segments sanguin- 

 eous. Thighs green, but obscui-e. I think it would be well to 

 mention the occurrence of C. formosa of Say in Cambridge, 

 Mass., first described from specimens brought by Mr. Nuttall 

 from the Missouri above the Platte River. Also, that in the 

 vicinity of Boston has been found Clytus speciosus^ described 

 by Mr. Say in Long's Expedition, as discovered on the banks 

 of Wisconsin River, Prairie du Chien. 



HAREIS TO HENTZ. 



January 19, 1827. 



From Dr. Pickering I learn that there is a great deficiency 

 in material for the Joui'nal of the Academy of Natural Sciences 

 of Philadelphia, and having been chosen a correspondent I have 

 sent on descriptions of our CJiremastocheili. , I have taken the 

 liberty of giving your name to the species you denominated 

 piger., and that of Sayi to the small one. Of this latter I made 

 a good sketch of natural size, but neglected taking an enlarged 

 drawing of it. My friend Pickering thinks that it would 

 appear better to be represented enlarged to about thirteen- 

 twentieths of an inch in length, and advises me to request you 

 to make a drawing of that dimension. If you can send me one 

 soon after the receipt of this letter, it will be forwarded with 

 mine, and these three species will then appear on the same 

 plate with the four insects which you described when in Phila- 

 delphia. 



If you could assist the publishers of the Journal in this 



