334 ANALYTICAL INDEX. 



CHAPTER II. continued. 



A. 1. GORDIUS GESSEEENSIS, PLANARIA GESSERENSIS, MUller, PAGE 73 



Description of the animal, . . . . . ib. 



Sometimes feeds on mussel, . ib. 



Plate X. fig. 5, . ... ib. 



A. 2. GORDIUS ALBICANS, Whitish Gordius 



Assigned a provisional place, . . . . . ib. 



Animal described, ...... ib. 



Plate X. explained, . . . . . .74 



B. GORDIUS GRACILIS 



Description, ....... ib. 



Has a double ovarium, ..... 75 



C. GORDIUS ALBUS, ...... ib. 



Assigned a provisional place, .... ib. 



Length, form, &c., ...... ib. 



Feeds voraciously on mussel, .... ib. 



Survived the loss of proboscis and intestinal organs, . . 76 



Plate IX. explained, ..... ib. 



D. GORDIUS AQUATICUS The Hair Worm, . . ib. 



Inhabits the fresh-waters of Scotland, ... ib. 

 Size, form, &c., . . . . . .77 



Extensively dispersed, ..... ib. 



This animal's metamorphosis to an eel a popular mistake, . ib. 



Specimen extracted from a person's throat after a draught of water, ib. 



3. GORDIUS SPINIFEE, ...... ib. 



General remarks, ...... ib. 



0. GORDIUS VIRIDIS SPINIFEE, . . . . .78 



Size, organs, &c., ...... ib. 



Plate XI., explained, ...... ib. 



6. GORDIUS PURPUREUS SPINIFEE, .... ib. 



Scarcely any other distinction than colour, . . . ib. 



Account of specimens, . . . . . 79 



Plate XI. explained, ...... ib. 



c. GORDIUS FRAGILIS SPINIFEE 



Dimensions, colour, &c., . . . . .79 



Specimen had the peculiarity of a slight silken sheath, . ib. 



