OPPIAN 



pondants. II faudrait passer plusieurs annees dans 

 les lies de I'Archipel, et y vivre avec les pecheurs, 

 pour etre en etat d'avoir line opinion a ce sujet" 

 (Cuv. et Val. pp. l6ff.). 



Two examples may be quoted to illustrate the 

 accurate observation either of Aristotle himself or of 

 his informants : (1) the assertion (A. 538 a 20 ; 567 a 

 27) that the Erythrinos and the Channa (both belong- 

 ing to the genus Serranns) are hermaphrodite^ a fact 

 rediscovered by Cavolini." (2) The assertion (A. 

 565 b 4) that in the Smooth Dog-fish, yaAcos o Aeios, 

 the embryon is attached to the uterus by a "yolk- 

 sac placenta/' rediscovered by Johannes Miiller, 

 " Ueber d, glatten Hai d. Aristoteles (Mustelus 

 laevis)/' Abh. d. Berlin. Akad. 1840. 



As regards the classification of animals we can 

 here notice only the main outlines of Aristotle's 

 system. All animals are distributed into two groups : 

 I. evaifxa, blooded animals [ = Vertebrates]. II. 

 ai'aLfjLa, bloodless animals [ = Invertebrates]. 

 Group I., fvaifxa, is subdivided into : 



(a) ^(poTOKovvra ev avrois [ = Mammals]. 



(b) 6pvtBe<; [Birds]. 



fc) TCTpa.TToSa rf airoSa MOTOKOvvra [Reptiles and 



Amphibia]. 

 (d) L)(^6ve<; [Fishes]. 

 Group II., avaifxa, is subdivided into : 

 (a) fxaXaKia [Cephalopods]. 

 (6) fxaXaKocTTpaKa [Crustaceans]. 



(c) h'TOjxa [Insects, Arachnidae, Worms]. 



{d) oa-TpaKoSep/xa [Mussels, Sea-snails, Ascidia, 

 Holothuria, Actinia, Sponges]. 



" Memoria sulla generazUme del pesci e dei granchi, Naples, 



1787. 



