List of the Contents of each Tank. 
5 
Tank No. 
4. 
lactuca) at the bottom of the tank. — # Plying Gurnard 
(. Dactylopterus , p. 78), reddish and brilliantly spotted, 
with great wing-like fins. 
Mlusks. Squid or Calmar (. Loligo , p. 51), delicate, 
transparent, and fish-like, with large eyes, swim¬ 
ming up and down the tank. — Sea-hare (. Aplysia , 
p. 55), soft black or brown lumps as large as a 
man’s fist. — Pleurobranchus (p. 55). -— Scallop 
(. Pecten , p. 62), with fiat fluted shell. — Large 
snails: Triton’s horn ( Tritonium , p. 53), with red 
body and yellow horns banded with black; shell 
pointed, shaped like a whelk; Tun ( Dolium , p. 54), 
black and white body, rounded shell; Murex (p. 53), 
much smaller, with spines. -— *Eggs of Mollusks. 
Of the squid hanging from the dead coral in long 
w T hite bags; of the sea-hare fine yellow strings, of 
the tun ribbons a finger-length broad; of Murex 
large honeycomb-like masses. 
The lettuce sea-weed serves as food for the sea- 
hares. 
Ascidians (Sea-squirts, p. 62). Cionci , white half-trans¬ 
parent double tubes. Phallusia , knobbed white mass. 
Cynthia , crimson-scarlet, sausage-shaped; the months 
of the two tubes can be seen projecting. Many other 
kinds. Tubicoious worms (Spirographis, p. 33), a foot 
high, like feathery palms. Fishes. Helmses (p. 83), 
small and black, with deeply forked tail. *Apogon 
(p. 84), red, only in summer. 
Sea-weeds. Red algae (Sehdenia and Vidalia ), like 
withered beech-leaves. Green alga (Codium bursa), dark 
green halls, the size of a marble to that of a melon. 
Fishes. Peacock-wrasse (Crenilabrus pavo , p. 82), with 
blue fins and tail, the lips are strongly turned out¬ 
wards. Sea-bream (Snapper, Pagellus , p. 86), a deli¬ 
cate coral-pink. Gilt-head ( Chrysophrys , p. 86), silver, 
a black smudge on each side behind its head. (Larger 
specimens in Tank 10.) Wrasse (.Labrus , p. 82), 
shaped more or less like Crenilabrus , green or mottled. 
Toothed-bream(Dmter, p. 86), silvery, heavy nose, eyes 
high, straight mouth with corners down, noticeably 
sullen and aggressive expression. Also other kinds. 
