The Hiflory of ANIMALS, 
Nereis tenuior Icevis. 
The /lender and fmooth Nereis . 
This is one of the fmaller fpecies: the length is about two inches, the thicknefs 
not more than that of a large earthworm; the fubftance is gelatinous, and the colour 
a bluilh-white, when the fun fhines on it very bright and glofly : the whole furface is 
fmooth, and the belly a little flatted, otherwife the whole body is rounded ; there are 
four tentacula, two of which are half an inch long, the other two not more than a 
third of an inch, and the latter are thicker than the others. 
It is found in the American iflands in falt-water ponds. Authors have mentioned 
what they call a Scolopendra marina lasvis, which feems to be this fpecies; though, what 
fhould induce them to give it the name of Scolopendra, is not eafy to fay. 
Nereis fubhirfuta . 
The hairy Nereis . 
This is about two inches and a half long, and about three quarters of an inch in 
diameter : it’s fubftance is firm and tough, and it’s colour a pale brown : it has many 
little clufters of hairs growing on the back, and yet more numerous ones at the fides ; 
they have a kind of flefhy protuberances to which they grow, and, while the creature 
is in the water, they ftand eredt ; at other times they are flaccid ; the colour of the 
hairs is a mixt brown and yellow, and is very glofly. 
It is found on our own coafls, and by fome authors has been called alfo a Scolo¬ 
pendra marina, and that with fomewhat more appearance of reafon than the former, 
though in reality an animal of a quite diftindt dais. 
• ‘ . T ... . ' . , ^ r. i t /’{ 
Nereis tuberculofa . 
The tuberculofe Nereis . 
This fpecies grows to three or four inches in length, and, in the larged: part, to about 
an inch in diameter: the fubftance is foft and flender, and the colour a mixt grey and 
brown; there are no hairs on it, but there are at feveral diftances a kind of papillasor 
flefhy tubercles, obtufe at their tops, and paler than the reft of the furface : the ten¬ 
tacula are four, but two of them are fo fhort, as to be fcarce diftinguifhable. 
It is frequent on the Suftex coaft, and has been figured by fome of the writers on 
thefe fubjedts. y - >. - , ^ 
The other fpecies are, i. The fmall, fmooth, thick Nereis. 2. The tuberculofe Ne¬ 
reis, with the tubercles pointed at the ends. 3. The wrinkled Nereis. 4. The large, 
foft Nereis. ... ,, • 'tf;: on. 
S A L A C I A. 
T H E body of the Salacia is of an ovate-oblong form, and the tentacula are nu« 
merous, and difpofed in little clufters. \\ 
Salacia fuperficie undulata . 
The Salacia , with an undulated furface . 
This is a tolerably large fpecies; it’s length is an inch and three quarters, and it’s 
thicknefs about an inch : it is largeft at the naked extremity, where it terminates in an 
obtufe and rounded form; from this it grows gradually, but not regularly, fmaller to 
the other extremity, where it terminates in a rounded, but not very thick, end ; the 
fubftance is tolerably firm ; the whole furface is undulated and uneven ; the colour is a, 
brownifh-grey; there are three clufters of tentacula toward the fmaller extremity. On 
prefling this, and feveral of the other fpecies of this and many of the preceding 
genera, there is a thin fluid difeharged from their natural aperture, after which, 
being lefs full, they appear flaccid, till replenifhed again : this has occafioned thole of 
the oblong lorm, in general, to be confounded by authors, under the whimfical names 
of Priapus marinus, and Mentula marina. 
B b 
Salacia. 
