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 A HISTORY OF SUSSEX Upon either side of these and arising from the body are four or five erect, linear processes. The dorsal tentacles are lamin- ated in the upper half, that portion being bent backwards. From near the base of each tentacle are given off two narrow arms directed forwards ; and upon either side of the lip there is a tentacular process. All of these appendages are more or less tipped with orange or yellow, besides which there is a line down the tail of the same colour. This species is very beautiful when under full sail in its proper element, but when seen upon the rocks at low tide it appears like a little shapeless ball of jelly quite unlikely to attract attention. It is usually found in moderate profusion. Hastings. PULMONATA AuRICULIDjB 1 86. Alexia ?nyosotis (Draparnand) Somewhat rare. Rye. CEPHALOPODA DIRBRANCHIATA DECAPODA OMMASTREPHIDii: 187. Todarodes sagittatus, Lamarck.* Very rare. Hastings. Loliginidje 188. Loligo vulgaris, Lamarck. The ' Squid.' Common. Hastings. Sepiid^ 1 89. Sepia officinalis^ Linnaeus. The cuttle-fish. Common. Hastings. Sepiolid^ 190. Sepiola scandica, Steenstrup. Common. Hastings. OCTOPODA POLYPODID^ 191. Polypus vulgaris, Lamarck. Not uncommon during unusually warm summers. Hasti ngs. 192. Moschites cirrosa, Lamarck. Upon the authority of Mr. W. Wells of the Brighton Aquarium this species occurs off that town. It is peculiar for having a single row of suckers along each arm. CHORDATA UROCHORDATA ASCIDIACEA AsCIDE^ SlMPLICES ASCIDIAD^ 1. Ascidia mentula, O. F. Muller. Test semi-opaque, rather coarse, of a faint yellowish flesh colour ; height, about 2 inches. Branchial aperture with eight lobes, and both apertures coloured bright crimson or with bright red spots. The test often has embedded in its exterior coralline stems, polyzoa, etc., and inter- nally harbours the mollusc Modiolaria marmorata. Common in the trawl and sometimes cast ashore. Hastings. 2. Ascidia virginea, O. F. Muller. Test transparent, smooth, colourless ; height i inches. Specimens often en- folded in the branches of corallines, the test sometimes extending a short way up the stems. Branchial aperture eight-lobed. Often harbours Modiolaria marmorata. Not uncommon ; trawled. Hastings. 3. Ascidia vitrea.f Brighton. 4. Ascidia, sp. Upon the shore at extreme low water, are often found extensive beds of an Ascidia, packed closely together. The test is coated with sand and is oblong to sub- globular in form ; length of a specimen about I inch. Branchial orifice appears to be four-lobed, but the lobes are probably subdivided ; about four short tentacles are seen. Common. Hastings. 5. Ascidia, sp. There is a species, somewhat resembling the last mentioned, occurring upon coral- lines. It is smaller, measuring about ^ inch in diameter, rather depressed, and coated with sand. Lobes of the branchial orifice as in the foregoing species. Com- mon. Hastings. 6. (?) Molgula arenosa. Alder and Hancock. Animal nearly globular, barely J inch in diameter ; coated with fine sand ; branchial orifice six-lobcd. Specimen has been apparently slightly attached. Tubular character of orifice non-apparent. Hast- ings. 106