ANALYTICAL INDEX. 

 CHAPTER XL continued. 



359 



Spawn, . PAGE 315 



Plate XLV. explained, ib. 



2Vbte other species, besides the above, have occurred, ib. 



I. Fan-head Eolis, . . ib- 



Length, &c., . . ib - 



Of a dingy colour, with white specks, 



Plate XLV. explained, . . ib. 



II. A black animal, ascribed to the Doridean tribes, ib. 



Description, ..... ib. 



Dr Johnston proposed to name it Limapontia nigra, . ib. 



Messrs Alder and Hancock reclaimed it, . ib. 



THE NAUTILINE. 



General remarks difficulty of tracing animal life from its 



earliest form, . . . 319 



Can trace no immediate connection between the spawn and 



the Doris itself, ... ib. 



The Nautiline exist in the spawn, but beyond that state it 



cannot be traced, . . - 320 



Statement of facts, . . . 322 



Nautiline apparently the produce of the Doris, yet it may 



be allied to the Animalcula infusoria. . 325 



Plate XLVI. explained 326 



