216 Zoological Society. 



Reeve, Conch. Syst., vol. ii. j)l. 215. f. 6; Conch. Icon. Phorus, 

 pi. 1. f. 2. 



Trochus Indicus, Gmelin, Lamarck. 



Wagner, Supp. to Chemnitz, p. 129. pi. 229. f. 4062 a, b. 



Hah. Cochin-China. 



" I never remember having seen this shell vv^ith any shells or peh- 

 bles attached to it, but the first two or three whorls sufficiently indi- 

 cate that some have been agglutinated to it at one time or another 

 by the numerous indentations which they exhibit. The under sur- 

 face of the shell is generally marked with a circular brown band, the 

 centi-e being widely umbilicated." 



Phorus exutus. Phor. testa orhiculari, depresso-conicd, ad apicem 

 acutd, rosaceo-fulvd, tenuissimd, volutum peripherid inconcinniter 

 undulatd, dilatatd, superficie diagonaliter striata et sulcatd; infernd 

 facie palUdd, nitente, striatd, versus marginem granosd, lamelld 

 cavitatem formante. 



Reeve, Conch. Syst., vol. ii. pi. 215. f. 9 and 10; Conch. Icon. 

 Phorus, pi. 2.i.1 a and b. 



Hah. ? 



•' This shell exhibits very slight evidence of ever having had any 

 matter agglutinated to it. It somewhat resembles the preceding 

 species, but may be readily distinguished by the elaborate manner in 

 "which the whorls are diagonally carved with grooves and striae. The 

 periphery of each whorl is most unusually dilated beyond their 

 laminal bases ; it is exceedingly thin and fragile, and very unevenly 

 undulated." 



Phorus calculiferus. Thor. testd orhiculari, convexo-conicd, tenui, 



subtilissime granosd et striatd, volutis calculis et conchyliorum 



frustis superni symmetrice ornatis ; facie infernd profuse granosd 



et striatd. 



Reeve, Conch. Syst., vol. ii. pi. 215. f. 7 ; Conch. Icon. Phorus, 



pl.l.f.l. 



Hab. ? 



" I have seen several specimens of this very pretty species ; the 

 shell is of a bright subrosaceous fawn-colour, and entirely covered 

 with fine diagonal strise and cross grains. The agglutinating property 

 seems confined to the upper portion of the whorls, so that there is 

 always a band of fine pebbles or shells around the sutures, and they 

 exhibit a regular increase in their selection as the agglutinating 

 surface increases with the growth of the shell." 



Phorus pallidulus. Phor. testd solidd, alhd, acutissime pyramidali, 

 volutis angulatis conchyliorum frustis sparsis agglutinatis ; in- 

 fernd facie leviter concavd, palliduld, subtilissime striatd. 

 Reeve, Conch. Syst., vol. ii. pi. 214. f. 4; Conch. Icon. Phorus, 

 pi. 1. f. 4. 



Hab. Coast of Japan : Siebald. 



This shell is most nearly allied to the Phorus omistus ; it is very 

 solid, sharply pyramidal, and of a singular live pallid appearance. 

 There are two or three specimens of it in the collection of H. Cuming, 



