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

90 COLLECTIONS FROM MELANESIA.dirty whitish, black-veined in the wrinkles (? stains only). Mantlelobesmoderately large, commencing in front some distance behindthe posterior tentacles and terminating a little in advance of theCauda. Anterior tentacles large, compressed, much dilated. Posteriortentacles large, cylindrical, with the apical slit not extendinghalfway down the outer side, placed a little nearer the oral tentaclesthan the beginning of the mantle-lobes. Eyes minute, situatednear the outer anterior base of tentacles.Shell very thin, straw-colour, 30 millim. long and 27 broad.Animal about three inches in length in its contracted state.Hah. Port Denison, Queensland.This species is remarkable for the large size of the oral tentacles.131. Stylocheilus, sp.Hah. Thursday Island, Torres Straits, 4-5 fms., on a sandybottom.There are four specimens from the above locality evidently belongingto the genus Sti/loeheiJus, which, having lost all colour and beingin rather poor condition, I refrain from describing. One of them,tlie smallest, differs from the rest in having a decidedly largerbranchial opening in the mantle, which is not, I am of opinion, dueto any contraction in the other three. All present a feature notmentioned by Gould in his description of the genus, viz. a duplicatureof the anterior margin of the foot. In the figure, however, of S.quercintis (Wilkes's Explor. Exjicd., Atlas, MoUusca, pi. 16. f. 271)this peculiarity is indicated, of which a better idea is given inSavigny's figure of Aplysia sauigm/iana, Atlas to the Explorationsin Egy]3t, pi. 2. figs. 2 2, also copied in Bang's Hist. jSTat. desAplysiens, pi. 20. f. 2.132. Miamira nobilis.£erf/h, Joiirn. Mus. Oodeffroy, 1874, Heft vi. pi. 1. fig. 5; 1875, Heftviii. p. 53, pi. 8. figs. 1-30, pi. 9. figs. 1-4 ; tScmper, Reisen Philippinen,Bd. ii. pi. 33. fig. 2 ; Beryh in Semper's lieisen, vol. ii.Heft 10, p. 411.Hah. Port Denison, Queensland, 4 fms. (Coppinger).Only a single specimen of this beautiful Nudibranch was obtainedby Dr. Coppinger. It still retains in spirit the vivid orange spots,which in time will probably disappear. Dr. Semper found thisspecies at the Philippines, and it has also been met with at Amboina(Martens) and the Samoa Islands.133. Ceratosoma tenue.Abraham, Ann. 8f Mag. Nat. Hist. 1876, vol. xviii. p. 141, pi. 7.figs. 5-5 6 ; Proc. Zool. Soc. 1877, p. 234.Hah. Thursday Island, Torres Straits, 4-5 fms.This species and (J. cahdonicuvi of Fischer (Journ. de Conch.18 76, p. 92) may eventually prove to be identical, in which case