APPENDIX. 287 



Vol. iii. p. 527. Akera bullata. 



The Voluta Ionensis of Pennant (Brit. Zool. ed. 4. vol. iv. p. 

 117, pi. 71, f. 87), should probably be referred to this species. 

 Mr. Barlee has taken this shell recently at Zetland. 



Vol. iii. p. 541. PniLiNE quadrata. 



The sculpture of this species, which we have lately received 

 from Massachusetts, as the P.formosa of Stimpson, is very vari- 

 able. In some of our younger specimens, the surface is merely 

 traversed in a spiral direction by curly strife (the curls short 

 and numerous) with an occasional simple or scarcely undulating 

 stria intervening. As these curly lines, in approaching the lip, 

 run farther apart from each other, the spaces become filled by a 

 similar series of striae, which form engraved ovals (for the most 

 part linked together) by their contact with the preceding set. 

 The upper or posterior spiral rows are rather impressed dots than 

 catence. 



Vol. iii. p. 609. Antiopa splendida. 



In a very interesting paper on the anatomy of this beautiful 

 Nudibranch, published in the " Annals of Natural History," for 

 July, 1851, Mr. Albany Hancock has identified the species 

 with the Eolidia cristata of Delle Chiaje, and Janus Spinolce of 

 Verany. The specific name will stand as cristata. 



Vol. iv. p. 9. Arion flavtjs. 



Mr. E. J. Lowe has obligingly communicated to us living 

 specimens of this rare species from the neighbourhood of Notting- 

 ham. He remarks that, " it never appears on the surface even 

 in rainy or damp weather. It is mostly under very damp leaves, 

 although occasionally found in shady woods, under the lichen, 

 Peltidea canina, and among the fungus of Nididaria striata, but 

 when found it is quite imbedded in these plants. It is capable 

 of suspending itself by a mucous thread of strong substance." 



