ANALYTICAL INDEX. 



351 



CHAPTER IX. continued. 



Specimens chiefly from Shetland and Orkney Islands, PAGE 243 



Note specimen with a snow-white plume, . . ib. 



Plates XXXI., XXXII., XXXIII., explained, . . ib. 



3. AMPHITRITE FLOSCULA, ..... 245 



This animal is distinguished by strange peculiarities, . . ib. 



Smaller than either of the preceding, it surpases them in beauty, ib. 



Resembles the ventilabrum and bombyx, . . ib. 



Description, ...... ib. 



Its tubular dwelling the product of animal secretion, . . 246 



Observations on two specimens, .... ib. 



Surprising that sodiminutive a creaturecan produce so much secretion, 247 



Buoyancy promoted by air bubbles, ... ib. 



A timid animal Viviani's Spirographus, . . . ib. 



The Floweret Amphitrite rare in the Scotish seas, . ib. 



Plate XXXI. explained, . . . . . ib. 



4. MISCELLANEOUS, . ib. 



Other species not sufficiently defined, . . . ib. 



1. FABRICIA, ...... 248 



A minute animal resembling the Fabrida by Miiller, . . ib. 

 Specimens had six segments in place of twelve or thirteen according 



to Fabricius and Johnson, .... ib. 



Description, ....... ib. 



Dwells in a tube of its own fabrication, ... ib. 



Found in pools near low water, . . . . ib. 



Plate XXXII. explained, . . . . ib. 



2. AMPHITRITE LUNA, ...... 249 



Features of small animals frequently equivocal, . . ib. 



Animal placed provisionally, . . . . ib. 



Description, ...... ib. 



Plate XXXI. explained, ..... 250 







3. FlLIPORA FILOGRANA, ..... ib. 



Proper place between the Amphitrite and the Serpula, . ib. 



A marine product of deep waters, .... ib. 



No uniformity of size or shape, and no two alike, . . ib. 



Animal described, ..... ib. 

 Tubes slender and intricately woven, . . . .251 



Animal very delicate, ..... ib. 



Plate XXXIV. explained, ..... 252 



