PHORUS. 



Plate III. 



Species 3. (Fig. c and d, Mus. Marquis of Northampton.) 



Piioeus onustus — Having two interesting new Phori 

 to add to my monograph of that genus, published in March 

 1843, 1 take the opportunity of figuring a curious example 

 rf the above-named species, which has been kindly handed 

 to me for illustration by the Marquis of Northampton, in 

 whose collection it forms a distinguished ornament. The 

 peculiarity of this shell consists in its being crowded with 

 i particular species of Cerithium, amongst a mass of dead 

 specimens of which, the animal must have located itself 

 on the shore. For the specific characters, locality, and 

 further account of the Phorus onustus I refer the reader 

 to Plate I. Fig. 3. of the genus. 



Species 8. (Mus. Cuming.) 



Phorus Solarioides. Phor. testa orbiculari, subt'diter 

 oblique rugosa, calculis conchyliorumque frustis vel lapi- 

 dibus copiose tectd ; facie infernd planulatd, angulatd, 

 conspicue spiraliter liratd, concent rice subtililer striata, 

 medio umbilicatd, mnbilico amplo, prof undo; alba. 



The Solarium-like Phorus. Shell orbicidar, finely 

 obliquely wrinkled, plentifully covered with pebbles 

 and fragments of shells or stones ; under surface flat- 

 tened, angulated, conspicuously spirally ridged, con- 

 centrically finely striated, umbilicated in the centre, 

 umbilicus large and deep ; white. 



Reeve, Pro. Zool. Soc, 1845. 



Hal. Island of St. Nicolas and Zebu, Philippines (found 

 in sandy mud at the depth of six fathoms) ; Cuming. 



This species, of which I have seen several examples col- 

 lected both by Mr. Cuming and Mr. Hinds, is always of 

 the same uniform small size. It may be chiefly distin- 

 guished by the angular structure of the under surface of 



the whorls, and by its very large umbilicus, which is very 

 similar in appearance to that of a Solarium . 



The fragments which become agglutinated to the Phorus 

 Solarioides are as variable as those of the Phorus onustus, 

 consisting either of stones, pebbles, or shells, with yerj 

 minute portions of shell towards the apex. 



Species 9. (Mus. Cuming.) 



Phorus cereus. Phor. testa orbicularis laevigata, calcu- 

 lis, lupidibus, conchyliorumque frustis copiose tectd ; 

 facie infernd leviler coneavd, minutmime spiraliter et 

 concentrice corrugatd, medio vix umiilicato; alia, quasi 

 cered. 



The waxen Phorus. Shell orbicular, smooth, copiously 

 covered with pebbles, stones, and fragments of shells ; 

 under surface slightly concave, very minutely spirally 

 and concentrically corrugated, scarcely umbilicated 

 in the centre ; white, wax-like. 



Reeve, Pro. Zool. Soc., 1845. 



Rah. Banguey, north end of the Island of Luzon, Philip- 

 pines (found in coarse sand at the depth of ten fa- 

 thoms); Cuming. 



The upper surface of the Phori is usually so crowded 

 with its agglutinated debris, that the base of the shell 

 must be especially looked to for character. In this species 

 it presents a very different aspect from that of the last, 

 and, in fact, of any that has preceded it. The entire base 

 exhibits a gentle concave depression, with a comparatively 

 smooth surface, being merely very minutely corrugated with 

 all the semi-transparent appearance of wax. The surface 

 of the upper portion of the shell appears to be perfectly 

 smooth. 



March 1845. 



