A MONOGRAPH 



OF THE 



DEVONIAN FAUNA OF THE SOUTH OF ENGLAND. 



Vertebrata. 



Fish Remains. PI. I, fig. 1. 



The traces of Vertebrates in the Limestones of Devonshire are scant in the 

 extreme. From the localities under consideration, the only indication of the 

 existence of Fishes known to me are two small fragments of bone obtained from the 

 Lummaton shell-bed, which are far too fragmentary for identification. Apparently 

 their surface is decayed, and the only mark on them is a long straight furrow, 

 which Mr. Smith Woodward, who has kindly examined them, considers possibly to 

 indicate a mucus-groove. 



The coarse texture of the bone, which is much greater on one side than the 

 other, indicates that they belonged to an animal of considerable size. He believes 

 them to be probably part of some large Placoid, which might have been allied to 

 the genus Homosteus. 



Though they are quite unidentifiable, I have thought their presence worth 

 recording, as they prove that large fish were inhabitants of the waters that 

 contains so prolific an Invertebrate Fauna. Fish-remains also occur in the Lower 

 Devonian beds at Kilmorie, and some fine fragments were discovered last spring 

 at Goodrington by members of Professor Hughes's party of Cambridge geologists. 



Crustacea. 



The Crustacea of these Limestones are sufficiently numerous, but for the most 

 part of small size. No less than seven families of Trilobites are represented, 

 and these include about twenty species belonging to the genera Phacops (2), 

 Cheirurus (2), Acidaspis (2), Lichas, Cyphaspis, Proetus (4), Dechenella, Harpes, 

 and Bronteus (6). Of these, Proetus, Cyphaspis, and Bronteus yield by far the 

 greatest number of specimens. Moreover, there are probably two Phyllocarids, of 



