Concernia^ Stimpson's Prodromus 



One set of extras was issued in covers as 

 published, and on the cover of part VIII appeared the 

 following note or erratiin? I^ri>:jpe sexdeatata changed 

 to Etluisa sexdentata> 



Another edition of extras has all the parts 

 in one cover and without the erratum. The cover of 

 tliis edition has for a second title the follo^ving; 

 Descriptions/ of/ Invertebrate Aiiiisals/ (Turbellaria 

 and Crustacea)/ Collected by the U. S, liorth Pacific 

 Expe-/ dition, Gapts« BJjiggold and/^ Rodgers, 1855—58. 



The above taKen from letter oi S, I. Smith, 

 Feb. 1, 1907. 



