On the Australian Haliotidce. 63 



numbers of their general Concliology. Lamarck again, when 

 quoted, has in many instances neither the vokime or page 

 specified, and sometimes the name only of an author is given, 

 without any intimation of his work, as De Montford, Leach, 

 Menke, &c. ; some, again, of the species described by me 

 in the Bligh collection are regularly cited; but several 

 others, as H. glabra^ carinata, costata, and crenata, are 

 passed over in silence, as if they never had been published, 

 although most of them, if I mistake not, are to be found in 

 Monograph as new species. We hope the author will him- 

 self correct these errors, without leaving to others the 

 necessary but ungracious task of doing it themselves. A 

 monograph, to deserve the name, should not only exhibit 

 with accuracy and impartiality everything that has been done 

 to elucidate the subject-matter, but also, by the fulness and 

 accuracy of its quotations, enable the reader, if he wishes, to 

 test the accuracy of the author himself. Every excuse may 

 be allowed to authors writing where costly publications 

 cannot be consulted, but there is none for him who, being 

 seated in the capital of the British empire, does not avail 

 himself of the ample sources of information within his 

 reach. 



