176 REPORT— -1856. 



Page. Page. pi. Fig. 



3/0. Littorina squalida, Northern Ocean. Resembles L. littoreus. 



371. Margarita umbilicalis, Northern Ocean. 



„ Margarita striata, Northern Ocean Z.B.V. 143 34 11 



„ Sigaretus coriaceus, Northern Ocean : Cape Lisbon Bay. 

 „ Neritina alata, Taheite. 



372. Natica pallida, Icy Cape M 136 34 15 



„ Natica otis, Mazatlan. Comp. N. Galapagosa „ 136 { ti « 



„ Natica clausa, North Sea, Sabine „ 136 {07 5 



„ Mitra crassidens. 



373. Harpa gracilis. 



374. Trichotropis bicarinata, 10-15 fms. Between Cape Lisbon 



Bay and Icy Cape. PL 9. f. 4-8. 



375. Trichotropis borealis, Melville Is. : 1 sp. Lieut. Belcher, Icy 



Cape. 

 „ Buccinum boreale, Kamtschatka. 



376. Columbella costellata. "Panama and Coast of Africa," Gray. „ 129 36 9 



„ Nassa luteostoma = N. Xanthostoma, Gray „ 127 36 3 



„ Ricinula elegans. (Very like R. arachnoidea.) 



„ Ranella nana. 



377- Murex ducalis, near Mazatlan. = M. brassica, Lam „ 108 33 1 



„ Pyrula patula, Pacific (=T. melongena, var. n. 1611, Tank. ) , , - ( 34 10 



Cat. 62.) ) » 115 J 35 1,3 



378. Fusus lapillus, Pacific. = Buccinum subrostratum, Gray, 



Wood Suppl. = Pyrula s., Gray, Z.B.V „ 115 36 1 5 



„ Fusus pallidus, Mazatlan. "A Fusus from the Calcaire 



grossiere near Paris presents no observable marks of 



difference." „ 117 36 14 



„ Pleurotoma tuber culif era, North of Isabella Is., entrance of 



Gulf of California. 



379. Conus arcuatus, near Mazatlan. ? = C. regularis, var „ 119 36 22 



„ Conus interruptus, near Mazatlan. Resembles C. purpu- 



rascens „ 119 33 2 



„ Oliva gracilis „ 130 36 21 



In a continuation of this paper (Zool. Journ. vol. v. pp. 46-51) are found 

 the following species : — 



Page. 

 46. Chelyosoma MacLeayanum. Arctic Seas, on stones. 

 New genus (Tunicata), described. 



48. Cytherea planulata. Near Mazatlan Z.B.V. 151 43 6 



49. Venus decorata. Hab.? Mus. Sow. Brought home in 



the * Blossom.' PL Suppl. 40. f. 3. 



The duty of describing the Mollusca of the ' Blossom' was undertaken by 

 Mr. (now Dr.) J. E. Gray, who considered it a suitable occasion not only 

 for introducing descriptions of Mollusca collected in the Pacific Ocean about 

 the same time by Capt. Lord Byron, Mr. Fryer, and the Rev. — Hennah, 

 and presented by them to the British Museum; but also for giving a com- 

 plete account (so far as materials then served) of the animals of the various 

 genera. This course delayed the completion of the work for nine years; 

 and it was at last only by entrusting the revisal and completion of the MS. 

 to Mr. Sovverby, that Capt. Beechey was enabled to publish the work in 

 July, 1839. For the reasons above stated, the " Zoology of Captain Beechey's 

 Voyage : Molluscous Animals and their Shells, by J. E. Gray, F.R.S. &c, 

 London 1839," is more valuable as a contribution to general conchological 

 and malacological knowledge than to the furtherance of geographical studies. 



