118 On the Genus Amathia of Lamouroux. 



There are few of my readers who will not be able to suggest 

 additions to this list in the writers of the last ten years, especially 

 in the Annates Sciences Naturelles, the Annals of Natural His- 

 tory, and the American Journal of Science and Art, the Geo- 

 logical Magazine, &c. I must add, also, that I did not propose 

 to refer to any but new observations, so I make no reference 

 to Nature, the Pop. Science Review, and similar serials. I 

 need scarcely remark that a large number of the works quoted 

 have not been seen by me, though I have been fortunate in 

 seeing an unusual number of the older ones. I can never say 

 enough in praise of the value and use of the figures and descrip- 

 tions of some old and almost forgotten authors ; and I have seen 

 new reason every day for verifying every authority, no matter 

 how trustworthy the author. It is related of the celebrated 

 patriotic scholar, Dr. Martin Routh, that when asked for some im- 

 portant and valuable principle as a result of all his literary experi- 

 ence, his reply was, 7 " Verify your references." A more important 

 principle in scientific literature can scarcely be imagined. Let 

 me hope that my imperfect labour in the foregoing list may help 

 the student in this way. 



