1892.] NATURAL SCIENCES OF PHILADELPHIA. 241 



Family MANTID^. 



31. Mobula edentula (Briinnich). 



A post. 9 (C'ephaloptera giorna). 



Family CHIM^RIDJE. 



32. Chimaera monstrosa L. 

 Apost. 9. 



Family ACIPENSERIDJE. 



33. Acipenser sturio. 



Apost. 10 (^Acipenser sturio), j (Tzoop'.ir^'. at Corfu. 



Family SILURIDJE. 



34. Silurus glanis (L). 



It is not known that this species really occurs in Greece. 



35. Parasilurus aristotelis (Agassiz). 



Apost. 81 (Silurus glanis). f D.avo^. called f yooXurM')'^ (g(oo)l- 

 (y)an6s) at Larissa, where it is caught in the Peneus River. 

 rXavu^ at Vrachori. Aristotle 505a 17, 490a 4, 506b 8, 568b 

 15fF, 608a 3 4, 568a 22 b 22, 568a 25 b 14, 569a 3, 621a 21 b 2, 

 602b 22 24. 



This species is identified by Apost. with the /'/a>:9 "of Aristotle. 

 Agassiz and Garman refer Aristotle's account to Parasilurus aris- 

 totelis, found in the Acheloiis River, in Acarnania, Greece. 



The y.opdu?M^, says Aristotle, swims with its feet and tail, 

 and, to compare a small thing to a great, has a tail like the ^Awi'f^. 

 Some fish have four gills, each double except the last, as for 

 instance z:'//';. -ip/.r^. ;'/«vjc, y.u-pi'Mn;. The j/A'h^; has the gall on 

 the liver. The ;'/.«>££? and -ip/.ai emit the bunch of eggs {ju -/.hrnjji) 

 united just as the [iarpayoi do. The larger yhhti^ lay their eggs in 

 the deep places, some even a fathom deejD, but the smaller ones lay 

 them in more shallow water, usually near the roots of a willow or 

 some other tree ; also near the reed and the ^poov (some kind of a 

 weed). The growth of the yMwi^ from the egg is very slow, wherefore 

 the male watches them forty or fifty days that the offspring may 

 not be devoured by the little fishes which happen along. The egg 

 of the y/.fh'.g is, when laid, as large as a grain of vetch. No pesti- 

 lential (universal?) disease attacks the fishes of rivers and ponds, 

 but peculiar diseases fall on some of them, as the yM>ii especially. 



