Report on the zoological collections made in the Indo-Pacific Ocean ...

86 COLLF.CTI0NS FROIT MELANESTA,C. larvcpformis (Blainville), in Burrow's Elements ' of Conchology'(1815), p. 191, pi. 28. figs. 2, 3, 4, is not this species assupposed by Reeve, but is beyond question the same as G. fasciatusof Qnoy, = G. ernfciformis, Sowerby (Genera Hec. & Foss. Shells,fig. 5),= C Icevis, Lamarck, 1819 (Anim. sans Vert. toI. vi. p. 317).The crude figure of G. larvcfformis in Blainville's ' Malacologie '(1827), pi. 87. fig. 6, is probably also merely a young specimen ofthe same species, judging from the sculpture and form of thedetached valves. In the drawing of them m situ on the back of theanimal, the anterior ones are rather narrow. The valves figuredby Burrow are still preserved in the British Museum ; but I caunotfind the dried animals or that in spirit which he mentions.Blainville's figure represents the mantle as clothed with comparativelylongish spines, and the gills extend nearly halfway up the sideof the foot. In G. burrowi, on the contrary, the gills are very short,do not occupy a third of the length, and are only 22 in number.G. oculatus of Quoy and Gaimard I believe to be a young stateIn the British Museum there are some smallof their G. fasciatus.specimens of this species which answer very closely to the description; they have the two dark bands meeting over the back, theposterior valves narrow and separated, and the three anterior onespale greenish and surrounded by a border of short black spineswith a pale zone outside it. The other spines on the mantle in thesmallest specimen are a trifle longer than usual and very closelypacked. The gills are said to number twenty on each side inG. oculatus, being three less than in G. fasciatus, a discrepancyaccounted for by age ; for in adult specimens of C. striatus I find afew more than in the young.120. Tornatella solidula.Linn. ; Reeve, Conch. Icon. figs. 3 a, b.V^ar.=T. coccinata, Reeve, I. c. figs. 1 a-c.Hah. Friday Island, Torres Straits, on the beach ; also PortJackson.This species has a wide geographical range, having been recordedfrom many localities in the Indian and Pacific oceans. The socalledspecies T. afjinis, A. Adams, should, I think, be regardedas a small form of T. solichda.121. Cylichiia aracMs.Bulla arachis, Quoy 8fGaimard, Voy. Astrolabe, Zool. vol. ii. p. 361,pi. 26. figs. 28-30 ; A. Adams, Thes. Conch, vol. ii. p. 590, pi. 125.tig. 134.Hab. Port Jackson (Gopjnnger and Angas) ; Port King George{Q. 4' G.) ; Tasmania, Stewart Island, New Zealand {Brit. Mus.).122. Atys naucum.Linn. ; Reeve, Conch. Icon. iigs. 1--1 c.Hah. Friday Island, Torres Straits {Goppinger) ; also recorded