THE 
CRENULATED TETHYS. 
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Generic Character. 
Body repent, oblong, fleshy, without feet. 
Mouth a cylindrical proboscis beneath an ex¬ 
panded lip. 
Foramina two, on the left side of the neck. 
Specific Character, &c. 
White TETHYS with blackish crenulated lip. 
Fimbriated Tethys. 
Black-edged TETHYS. 
This animal has been so accurately described by 
the celebrated Bohadsch in his work de animalihus 
marinis that it is unnecessary to add any thing to 
what that author bus written on the subject. Its 
colour, lie informs us, is white on all parts except on 
the verge of the lip. and its length about six inches: 
the lip or expanded part in front of the head is about 
four inches and a half wide and about three inches 
Ions*: the margin of this part is crenated on both 
sides, and is thicker than the other part of the lip, 
rising up on each side so as to resemble a kind of 
lace or edging round a hat, and appearing of a dif¬ 
ferent 
