404 
Ajrjroc.4=:TES. 
Tue upper portion of the mouth forms a half circle, united to a 
crossed portion or lip below; the mouth not cu])ablo of being closcly 
shut. Dorsal fins close together, and the liindiuost continuous with tlie 
tail and anal tin. 
MUD LAMPKEY. 
BLIND LAMPREY. PRIDE. 
Lampetra ccBca, 
(( <( 
Fetromyzon hrancldalis, 
Ammoccetes hrancldalis, 
(( (( 
(( 
Willoughby; p. 107, PI. G 2, f. 1. 
Bay; Synopsis Piscium, p. 36. 
Lisn.®us. 
Loudon; Magazine of Natural History, 
vol. V, p. 23. 
Fleming; Br. Animals, p. 164. 
Jenyns; Manual, p. 522. 
Yahkell; Br. Pishes, vol. ii, p. 600. 
Tins little fish departs but in a small degree in liheness 
from the general family of the Lampreys, but it differs from 
most of them in its characteristic habits; and especially in its 
little disposition to wander from its accustomed haunts, or its 
place of shelter and concealment; which is in the beds or 
accumulations of sandy mud at the border and eddy of the 
smaller brooks; and from which it seldom emerges; so that 
however numerous, it would scarcely he known if not sought 
for by fishermen to serve as a bait in lohiffing for Pollacks. 
Buried in scattered companies in the soft soil, it may be said 
to lead the life of the mole; and it is there it finds all it 
wants of food; in search of w’hich by taste or scent it moves 
through its tracks as appetite or disposition prompts; and from 
observation it may be judged that except in search of new 
feeding ground, it never w'illingly exposes itself to the dangers 
