83 
boned, though gentle action. It moves freely about from 
Place to place by a gliding motion of its base ; or by turning 
at > its oral surface, can move far more rapidly by means of its 
'entacula. 
LUCERNARIA. 
Generic Character: Body somewhat canipanulate, fixed when 
a t rest by a narrow disc or stalk ; mouth quadrangular, in 
the centre of a reversed umbrella-like expansion ; ten- 
tacula disposed in widely separate tufts on the margin, 
k. AURICULA. Body funnel-shaped, with eight equi- 
distant tufts of tentaeula round the margin ; between each 
tuft a marginal tubercle. PI. xvi., figs. I, 2, 3. 
. Lucernaria auricula, Turtou’s Lin., vol. 4, p. 121. Flem- 
'“g’s Brit. An., p. 41)!). Johnston in Mag. Nat. Hist., vol. 5, 
44; Brit. Zooph., p. 221), fig. 3 5, p. 230, fig. 36, p. 193, 
28. Templeton in Mag. Nat. Hist., vol. 9, p. 304. 
. Bab, On fuci, at Talland sand bay, Chapel pits, Polperro. 
Abundant about June, July, aud August. 
This species I have found abundant in some years, while in 
? t 'ier s , I have hardly been able to procure a single specimen, 
though I have supposed it the L. auricula of the authors 
f i , 0 ted above, yet it differs in some important particulars, 
be f orm 0 f the body very much resembles the conoidal, 
s 1 ' old form of wine glasses; the upper and free margin is 
(i ,,rr ounded by eight equi-distant tufts of tentaeula. From 
( |^b of these tufts of suckers a thick chain of brown glan- 
jl^’ur looking bodies proceeds downwards, for about two-thirds 
e length of the body, where they unite in pairs, and then 
T°ceed as a very delicate thread to the base. The foot-stalk 
a *uiall and tubular, resembling the stalk of a wine glass, 
s o under certain lights appears to be annular, or to have a 
t|' lr al thread running its whole length. The termination of 
. 1,s foot-stalk is in a fiat cup-like disc, by which it adheres 
'•be f ucus on which it stands. Between each pair of tufts 
o| te ntacula is a marginal gland. The mouth is central, 
® v ated, and somewhat quadrangular. At the four angular 
flections of the lip are four bodies attached externally, 
’^Qded superiorly, and pointed inferiorly. 
tj 'be colour is generally of a reddish brown, but is some- 
®el' eS a liver brown, green, or yellowish. They fix them- 
Po Ve ? to the fuci by their sucker-like discs, in nearly an erect 
e t , , Slll0Q ; never, however, hanging down or standing perfectly 
'■t'l, 
st^beir mode of progression differs under different circutn- 
s 0 ^ Ces - If intending to move to any great distance, they do 
a cl j y loosening their attachments, and then by various and 
' e contortions, waft themselves away till they meet with 
