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 A HISTORY OF SUSSEX vivid blue about the centre, and a ring of opaque white around the apex, with spots of opaque white scattered below. The dorsal tentacles are ringed, and are of a pale buff or orange colour, the oral ones being long and sweeping. Habitat, under stones and upon rocks at low tide. Com- mon. Hastings. 170. Facelina drummondi, Thompson. Animal f inch in length ; body trans- lucent, of a faint rose colour ; back, pale salmon. The dorsal tentacles have from twenty to thirty laminae, are blunt at the apex which is of a pale orange tint, the tentacle itself being rose-orange and having in front a narrow patch of granular, opales- cent white, extending one third of the way down ; there are also spots of a similar character between and in front of the ten- tacles. The oral tentacles are a trifle longer and more pointed than the dorsal ones, and somewhat similarly coloured. As regards papillae, notes are unfortunately deficient. Obtained from shrimp trawler. Rare. Hastings. 171. Antiopa crtstata, delle Chiaje. An immature specimen barely inch in length. Body transparent, colourless, or with a slight tinge of bufF. The papillae are inflated, or club-shaped with pointed tips, the foremost three upon either side projecting greatly in advance of the ten- tacles and appearing to act somewhat as tactile organs, contracting at every contact with any object ; their tips form a broad line in advance of the animal ; the hinder papillae are large and project considerably beyond the tail. The gland of the papillae is very narrow and linear, enlarging or dividing near the apex and coloured purplish- brown or greenish-brown, the outer portion being transparent, but of the same hue. The apex is opaque white and where this meets the colour below, the result is a metallic blue. The dorsal tentacles are laminated and are short and blunt, with an opaque white spot at the apex ; between them is a raised and warty frontal piece, coloured bufF. A single specimen taken upon weed in a rock pool at low water. Rare. Hastings. DoTONIDi?: 172. Doto coronata, Gmelin. Animal a little over ^ inch in length, of a pale orange colour, except as regards the foot which is colourless. There is a single pair of tentacles having characteristic trumpet-mouthed sheaths. Along either side of the body are arranged eight club- shaped papillae, each one being encircled with about eight equidistant rings of large tubercles, each tubercle having at its apex a distinct black spot ; internally there are opaque white egg-like bodies. This species is common upon the coral- line Antennular'ia to which it attaches its egg-band ; also taken upon Obelia longissima. Hastings. 173. Doto pinnatifida, Montague. Animal very similar to the last species, but with a more or less interrupted band down the back of brownish-green ; and along each side of the cloak are from one to three rows of tubercles set alternately, each tubercle containing an opaque white body and in some cases a black speck also. Similar tubercules with like contents occur irregularly down the back, the black specks being conspicuous. These black specks are of peculiar interest since it has been surmised that they may be organs of vision. They also occur around the rim of the tentacle-sheath and on lobular processes arising from the latter. Common upon Antennular'ia from the Diamond Ground. Hastings. DENDRONOTIDi* 174. Dendronotus frondosus, Ascanius. Animal mottled light and dark brown, or buff, sometimes almost golden ; in some cases the colour is uniform. Along either side of the back are from six to eight branching, tree-like gills. The tentacles are ringed and arise from a sheath the rim of which also gives off branching processes. Specimens obtained only a little distance from shore are small, that is from I to 2 inches in length, but some trawled upon the Diamond Ground must have measured close upon 5 inches. Rather rare. Hast- ings. Triton iiDi^ 175. Tritonia hombergi, Cuvier. Animal fully 3 inches in length ; back warty, and slate coloured. Around the margin of the cloak are arranged rather closely a number of dendriform gills. The tentacles have sheaths and near the apex branched processes are given off. This creature is not prepossessing, being in the preserved condition rather toad-like. Not uncommon from the Diamond Ground. Hastings.