20 
MARINE FAUNA OF ST. ANDREWS. 
growing on Cynthia grossularia under the cavern-roofs ; but 
it is not seen on the littoral seaweeds, as is Clava squamata 
on the shores of the Hebrides and the western and other coasts 
of Scotland. The tentacles show a slightly enlarged sucker- 
tip. 
Fam. 2. Hydractiniidae. 
4 
Genus Hydractinia, Van Beneden. 
Hydractinia echinata , Fleming; Hincks, Brit. H. Z. 
vol. i. p. 23. 
Abundant on Fusus islandicus , Natica , and other univalve 
shells cast on shore after storms. The outer lip in the shells 
inhabited by hermit crabs is frequently prolonged into a horny 
membrane, as mentioned by Dr. Johnston. 
Fam. 9. Eudendriidae. 
Genus Eudendrium, Ehrenberg. 
Fudendrium rameum , Pallas ; Hincks, Brit. H. Z. 
vol. i. p. 80. 
Plentiful in the deep water of the bay, attached to shells and 
masses of Balani and Serpulce. A fine specimen measured 
9 inches high ; and the breadth of the branched portion was 
8 inches. 
Fudendrium capillare , Alder; Hincks, Brit. H. Z. 
vol. i. p. 84. 
Fine tufts are occasionally found on the stems of Anten- 
nularia ramosa , interwoven with other zoophytes, from deep 
water. The specimens had no short branches ; all were much 
elongated, and the polyps terminal. Some slight rings exist 
here and there on the main stems at the base; those at the 
origin of each branch are very distinct. 
Fam. 11. Tubulariidse. 
Genus Tubularia, Linnaeus. 
Tubularia indivisa , L.; Hincks, Brit. H. Z. 
vol. i. p. 115. 
Common in deep water. One of the large specimens 
