90 COLLECTIONS FROM MELANESIA.. 



dirty whitish, black-veined in the wrinkles (? .stains only). Mantle- 

 lobes moderately large, commencing in front some distance behind 

 the posterior tentacles and terminating a little in advance of the 

 cauda. Ajiterior tentacles large, compressed, much dilated. Pos- 

 terior tentacles large, cylindrical, with the apical slit not extending 

 halfway down the outer side, placed a little nearer the oral tentacles 

 than the beginning of the mantle-lobes. Eyes minute, situated 

 near 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. 



Hub. Port Denison, Queensland. 



This species is remarkable for the large size of the oral tentacles. 



131. Stylocheilus, sp. 



Hab. Thursday Island, Torres Straits, 4-5 fins., on a sandy 

 bottom. 



There are four specimens from the above locality evidently belong- 

 ing to the genus Stylocheilus, which, having lost all colour and being 

 in rather poor condition, I refrain from describing. One of them, 

 the smallest, differs from the rest in having a decidedly larger 

 branchial opening in the mantle, which is not, I am of opinion, duo 

 to any contraction in the other three. All present a feature not 

 mentioned by Gould in his description of the genus, viz. a duplicaturo 

 of the anterior margin of the foot. In the figure, however, of S. 

 quercinits (Wilkes's Explor. Exped., Atlas, Mollusca, pi. 16. f. 271) 

 this peculiarity is indicated, of which a better idea is given in 

 Savigny's figure of Aplysia savignyiana, Atlas to the Explorations 

 in Egvpt, pi. 2. figs. 2 2, also copied in Hang's Hist. Nat. dos 

 Aplysiens, pi. 20. f. 2. 



132. Miamira nobilis. 



Bergh, Journ. Mus. Godeffroy, 1874, Ileftvi. pi. 1. fig. 5; 1875, Heft 

 viii. p. 53, pi. 8. figs. 1-30, pi. 9. tigs. 1-4 ; Semper, Reisen Philip- 

 pinen, Bd. ii. pi. 33. fig. 2; Bergh in Semper's Reisen, vol. ii. 

 Heft 10 ; p. 411. 



Hab. Port Denison, Queensland, 4 fms. (Coppinger). 



Only a single specimen of this beautiful Nudibranch was obtained 

 by Dr. Coppinger. It still retains in spirit the vivid orange spots, 

 which in time will probably disappear. Dr. Semper found this 

 species at the Philippines, and it has also been met with at Amboina 

 ( Martens) and the Samoa Islands. 



133. Ceratosoma tenue. 



Abraham, Ann. $ Mag. Nat. Hist. 1876, vol. xviii. p. 141, pi. 7. 

 tigs. 5-56 ; Proc. Zool. Soc. 1877, p. 234. 



Hab. Thursday Island, Torres Straits, 4-5 fms. 

 This species and C. caledonicum of Fischer (Journ. de Conch. 

 1876, p. 92) may eventually prove to be identical, in which case 



