Plate. 



Fig. 



2 



3, 3a-c. 



3 



1, 1 a-c. 



14 



1. 



14 



2. 



15 



2. 



15 



3. 



24 



9,9 a, b. 





• 



11 



1,1a, la, 



11 



3,3a. 



11 



2. 



5 



1 a,b. 



6 



1, la-c. 



6 



2,2a-e. 



6 



2e,f. 



6 



2a,/3. 



8 



4,4 a. 



8 



3, 3 a. 



9 



3, 3a-c. 



204 report— 1856. 



Trochns brevispinosus, Val. = Uvanilla olivacea, Mawe. 



Trochus balcenarum, Val. ?=Pomaulax undosus, Mawe, var. Vide 

 B. M. Maz. Cat. p. 230, note. 



Calyptrcea rugosa (? cujus). = Crucibulum imbricatum, Sow. 



Calyptrcea tubifera, Less. = Cr. spinosum, Sow. 



Calyptrcea gemmacea, Val. Shell as figured, not recognized : it 

 may be a worn and stunted Cr. imbricatum. 



Calyptrcea amygdalus, Val. = Crepidula onyx, Sow. 



Calyptrcea perforans, Val. = Crepidula explanata, Gould. (The 

 prior name of Val. must be abandoned, as representing an un- 

 truth. The form of the shell is due to its inhabiting the burrows 

 of Lithophagi, &c.) 

 1, la, \a,bis. Vermetus centiquadrus, Val. (Subg. Aletes.) 



Vermetus Peronii, on Strombus galea. A variety of V. centiquadrus. 



Vermetus margaritarum, Val. 



Fusus Petit -thouarsii. =F. Dupetit-Thouarsii, Kien. 



Buccinum Janelii, Val. = Pisania sangidnolenta, Duel. 



Buccinum mutabile, Val. = Pisania insignis, Rve. 



Buccinum mutabile, jun. = Pisania gemmata, Rve. 



Buccinum mutabile, operculum. (Extremely incorrectly drawn.) 



Purpura saxicola, Val. Resembles P. lapillus and Freycinettii. 



Purpura hcematura, Val. ? =P. biserialis, Blainv. var. 



Purpura Grayii, Kien. =■ Monoceros grande, Gray. 



It will be observed that the author has, in several instances, not only over- 

 looked the writings of English naturalists, but even disregarded the descriptions 

 by Deshayes of the shells of this very expedition. 



42. During the period that Mr. Cuming was absent on his Philippine 

 expedition, explorations of great value were being made by a gentleman, 

 whose few published writings only show how much science has lost by his 

 early death. In the year 1836, the * Sulphur,' under Lieut. Com. Kellett, 

 visited Callao and Payta in Peru, and explored the coast from the Bay of 

 Guayaquil to Panama. Here Commander (now Capt. Sir E.) Belcher took 

 the first place, a gentleman whose conchological labours during the voyage 

 of the ' Blossom' have already been recorded. Mr. Hinds, the surgeon of 

 the expedition, not only showed the greatest industry in dredging and other- 

 wise collecting specimens, but made the products of his labours tenfold more 

 valuable by the accurate notes which he took of their localities and stations, 

 guided by a comprehensive view of the subjects which it was his endeavour 

 to illustrate. The west coast of Central America and Mexico was searched 

 as far as San Bias, and afterwards explorations were made from Acapulco to 

 Cerro Azul. On the return of Messrs. Hinds and Cuming from their respect- 

 ive expeditions, they compared their collections and notes together. Here 

 were abundant materials for geographical and stational lists of the very 

 greatest value ; but, most unfortunately, the usual plan was followed of only 

 publishing the new species. This was done by Mr. Hinds in several most 

 accurate and valuable papers communicated to the Zool. Soc. and to the 

 Annals of Nat. Hist. ; and, in a collective form, in the " Zoology of the 

 Voyage of H.M.S. Sulphur, commanded by Capt. Sir E. Belcher, during the 

 years 1836-1842; by Richard Brinslcy Hinds, Esq., Surgeon R.N. London, 

 Smith, Elder and Co., 1844. Vol. ii. Mollusca." The preface to this work 

 contains a masterly digest of the results of his experience on the distribution 

 of Mollusca, especially on those of the W. American coast as compared with 

 the Pacific Islands ; the influence of station, depth, temperature, and other 

 causes, both on genera and on particular species; and the comparative effect 



