the RIVER lamprey. 
Ve probably heavy and unwholefome, more highly re- 
commended by the epic.ure than the pbyfician *. They 
are taken in fuch vaft numbers in the Thames, the Se~ 
Ver n, and the Dee, that they conftitute a copfiderable 
branch of trade. They are fold to the Dutch, who ufe 
them for bait in the cod fifhery : befides what are con- 
fumed in England, 450,000 have been exported in a fea,- 
fon for this purpofe, at two pounds per thoufand. 
The Pride f. 
This fpecies is exceedingly fmall, being from four to 
ei ght inches. It is a Britifh fifh, but found alfo in the 
ri vers of of Germany and Italy. In the river IJis, and 
^ther dreams near Oxford, they are abundant, where, in- 
ftead of concealing themfelves, they roll in the mud, and 
ne ver are obferved to adhere to the Hones, like the other 
^ a mpreys J. 
The back is of a livid colour, approaching to black ; 
*be belly filvery, and more refplendent, than the larger 
kinds. The mouth is of an eliptical lhape ; within it 
are hx or feven teeth, and above th.em a fmall femicircular 
bone. Upon the top of the head is a fmall tube, or aper- 
ture > like the cetaceous fifh : The belly fwells and con- 
tr a£ls alternately, as in thofe animals which breathe by 
ra eans of lungs. It has two dorfal fins ; the firfl riling 
a bout the middle, and fupported by fmall tendons, that 
V °L. III. N are 
* WiUough. ubi fupra. 
t Lapem, or pride of the Ills. Will. PetromyzoR Brmhklis, Lb). Syfi. 
i Brmlh Zoology, ' 
