178 THE CANADIAN ENTOMOLOGIST. 



species. " N " means simply, " Noraen in litteris," which Klug himself 

 added to the specific name, to indicate that thus far this name was only 

 used privately and did not yet exist in print. Burmeister adopted this 

 name later for this species and described it for the first time, retaining 

 the manuscript name and cited Klug as the author, though surely 

 wrongly, of which Burmeister, as is universally acknowledged, is the 

 author. 



"' As far as I have been able to see, the original label for the genus 

 Lecanium has not been preserved in the Berlin Museum.' 



" In the hope that this communication will straighten the matter, I 

 remain, Most sincerely yours, 



" Theo. Pergande." 



Dr. O. G. Costa published his Nuove Osservazioni intorno alle 

 Cocciniglie in the Atti del R. Instit. d'lncorrag., Vol. VI., pp. 31-52. 

 This volume bears the date 1840 on the title page, but as Vol. V. is 

 dated 1834, and as the separatum, which is exactly like the above-named 

 paper except in pagination, bears the date 1835, it is quite certain that 

 the first part of Vol. VI. was also published in 1835. Dr. Hagen was in 

 error in giving 1828 as the date of this paper. 



Costa in his Fauna del Regno di Napoli Emitteri divides the 

 Coccidte into three genera, as follows: Genus Calypticus with hesperidum, 

 Linn., and spumosus, hevis, aterrimus, radiatus, testudineus and fasciatus 

 of Costa. The first species, hesperidum, Linn., may be regarded as the 

 type. 



There is some doubt as to the exact date of publication of the 

 Coccidie in this work, but Hagen gives the date of the entire work 1S32- 

 1858. The Coccidse of the Fauna is referred to in the Nuove 

 Osservazioni, several times in such a way as to lead me to believe that it 

 was published before 1835, and therefore Lecanium, which dates only 

 from 1835, IS preoccupied by Calypticus, Costa. 



There is another work by Costa which I have not yet been able to 

 see. This is his Prospetti di una nuova descrizione metodica del genera 

 Coccus L., published in Naples in 1828. From a reference to this in the 

 Fauna del Regno di Napoli, I infer that he proposed generic names 

 which he changed in his later works. Whether these names were 

 established in such a way that they may be used to the exclusion of the 

 later ones, I have not yet been able to learn. 



