282 GASTEROPODES. 



PLATE XXXIX. 



FIG. 1 . Tritonia Hombergii, spawn. 



2. Spawn, enlarged. 



3. Murex antiguus, spawn. 



4. Young of the same, from the spawn. 



5. One of the young magnified, shewing some correspondence with the 



Nautiline. 



6. Another. 



7. Pellets discharged by the young, enlarged. 



2. TRITONIA CERVINA. Plate XL. Figs. 1-13. 



The aspect of this animal is very singular, because its form is of the 

 most remarkable kind. Naturalists have bestowed different names on it ; 

 some of them, and apparently those the most appropriate, from the 

 striking resemblance of the more conspicuous members to a stag's horns. 

 Nevertheless, in the copious and learned work of Messrs Alder and Han- 

 cock, it is proposed to restore a name said to be originally given by 

 Miiller Dendronotus. With great submission, I would prefer that which 

 is most explicit. 



It is impracticable to describe or to explain the appearance of this 

 creature without figures indeed, scarcely with them. Artists, besides, 

 have particular modes of representing objects, according as they hope to 

 render them most intelligible. 



The branchiae rise upright from the cloak ; but, by being so repre- 

 sented, they interfere with the view of each, and produce nothing but 

 confusion. 



Instead of representing them here as upright and in profile, they are 

 seen in the figures as viewed from above, and as if diverging in plane, 

 whereby all the parts are exposed quite distinctly. 



Length of specimens from an inch to an inch and a half. Body nar- 

 row in proportion, fleshy. Head rounded, extremity tapering. Mouth 

 situate amidst the corrugated face of the under surface. The cornicula, 

 a, rising from the neck, consist of two distinct members ; first, a pillar, 

 with a socket above, cleft into five or six irregular leaves, serving as a 



