(v2 Mr. Montagu's Description of Marine Animals 
while some have been described as mere objects of the micro- 
scope, others of superior size can be supposed only to have 
escaped notice from locality. In this genus I could add many to 
those already described as English, the greater part of which ap^ 
pears to be entirely new, or, at least, such as I can find no syno- 
nyms for, by the laconic style of most general writers on natural 
history. 
From these I have selected figures and descriptions of six of 
the most curious. 
Of the Oniscus there also appear to be many non-descript spe- 
cies, especially amongst the more minute ; but I have only se- 
lected two for the present occasion : these, as well as those of the 
preceding genus, are figured only by outlines, as sufficient to elu- 
cidate this description. 
The Monoculus is another tribe of insects which are sufficiently 
numerous both in fresh and in sea water; but it is somewhat 
extraordinary, that, out of the species already enumerated by 
Midler and others, not above ten or twelve are marine : to this 
division, therefore, many might be added; but as these are 
only microscopic objects, I shall forbear touching on them at 
present. 
Of the Intestina I shall give descriptions only of two species of 
Gordius and one Sipnnculus : this last, and one of the former, ap- 
pear to be entirely new; the other so little known as to have been 
omitted by later writers. These genera are at present very 
small ; one containing five, the other only two, species : the ad- 
ditional ones described possess such strong specific marks of 
distinction that figures are not required. 
To the Mollusca tribe a great deal might be added ; many of 
which, from their extreme beauty, elegant and complicated struc- 
ture, claim no small share of attention and admiration. 
In 
