ANALYTICAL INDEX. 335 
CHAPTER II.—continued. 
Death ensued from mutilation, ; : : PAGE 80 
Plate XI. explained, 5 . 4 6 : ib. 
d.—GorDIUS FASCIATUS SPINIFER,—The Belted Gordius, . : ib. 
Length, form, and general characteristics, . é é ib. 
Liable to rupture, 2 . : : : - 81 
Account of specimens, 3 : : 0 : ib. 
This animal rare, 0 : : ; ‘ : ib. 
Has the identifying groove and slit of the Gordius tribe, 82 
Delle Chiaie, . : : : - : é ib. 
Plate XI. explained, : . : . : ib. 
§ 4. Gorpius INTEGER, : : . : c ib. 
General remarks—a third species, . 0 . - 83 
a.—Gorpius ruscus,—The Brown Gordius, : : : ib. 
Length, breadth, colour, &c., : ib. 
Involves itself in a knot, but has no groove, nor aaeibls aay . ib. 
Mouth apparently in the anterior part, : 2 , ib. 
As many as six specimens in one knot, ; 5 : ib. 
The Nereids take refuge among them with impunity, 5 ib. 
Two specimens spawned in April, : : ° . 84 
Plate [X., XII., explained, c ¢ 5 5 ib. 
b.—Many worms have no external prominences, : 2 : ib. 
Their place in the system equivocal, : : : ib. 
Gorpius ANGuIs,—The Snake Worm, 0 : 85 
One of the most remarkable of the tenants of the deep, 6 ib. 
A genuine Snake in miniature, : : : : ib. 
Length, diameter, &c., : : : . : ib. 
Colour red and white, . : 7 : : , ib. 
Description of the animal, : 2° : : : 86 
Ova, : : : 4 ib. 
Forms a pale grey ‘thick silken pheathe . : : ib. 
Sheath sometimes abandoned, 2 : Z : ib. 
History of specimens, : : 3 : 87 
Plates XIII. and X. explained: : : . : ib. 
Il. VERMICULI— 
This section composed of miscellaneous observations, . : 88 
Certain animals brought provisionally within its scope, . ib. 
a.—VERMICULUS CRASSUS, 5 é ib. 
Only one specimen which is Fenech : E : ib, 
