Manchester Memoirs, Vol. xlv. (1901), No. t). 3 



de huit bras egaux, munis de ventouses sessiles et sans 

 grimpes." 



It is abundantly clear that Schneider's genera Polypus 

 and Moschites are equivalent to Lamarck's Octopus : it is 

 true the former author does not enumerate any species, 

 but his references to I-inne and older authors leave no 

 doubt as to what he had in view. 



It is noteworthy also that the genus Loligo Lamarck- 

 includes no less than three genera of Schneider, namely— 

 LoUgo, Tcuthis and Sepiola. Of these the second is almost 

 invariably regarded by modern writers as included in the 

 first, and in any case the name would be invalid, having 

 been previously used by Linne for a fish. The first and 

 last genera, however, are quite clearly characterised by 

 Schneider and should be attributed to him. 



Of Schneider's two remaining genera, the first Nautilus 

 is equivalent to Argonauta, and the second Pompilus to 

 Nautilus, but as these had been previously named and 

 characterised by Linne, the commonly accepted nomen- 

 clature will not be disturbed as regards them. 



It is very difficult to account for the neglect with 

 which Schneider's contribution to knowledge has been 

 treated. Partly it is due no doubt to its being included in 

 a volume whose title gives no clear idea of its subject, and 

 which has neither table of contents nor index ; it is, how- 

 ever, included in the Bibliography given by Keferstein 

 in his edition of Bronn's "Thierreich" ('««). Jeffrey's 

 attribution of the genus Loligo to Schneider might seem to 

 indicate that he was acquainted with it, but on that 

 hypothesis it is difficult to explain why he quotes Sepiola 

 as of Leach and is quite silent as to the prior names for 

 Octopus and Eledone. 



Leach's treatment of the matter ('11) is rather 

 strange. He adopts the generic name Polypus, but quotes 



