MUEEX.— Plate XXVIII. 



breviusculd; anfractibus superns paululum depressis, 

 rnxfariam varicosia, varicibiis frondods, frondihus gra- 

 cilibus, eleffaniissime muricafo-ratmsis ; alba, frond'ihm 

 mediaiiisfuscis ; aperturd parvd ; canali longiiisculo, 

 asceiidente. 

 NoERis's MuREX. Shell somewhat pyrifonnly ovate, 

 peculiarly attenuated and ciuTed back towards the 

 base, transversely conspicuously ribbed and very finely 

 elevately striated, spire rather short ; whorls a little 

 depressed at the upper part, six-varicose, varices fron- 

 dose, fronds slender, veiy elegantly prickly branched ; 

 white, middle fronds brown ; aperture small ; canal 

 rather long, ascending. 

 Reeve, Pro. Zool. Soc, 1845. 



Hah. ? 



I have much pleasure in dedicating this important species 

 to Thomas Non-is, Esq., in whose cabinet there is ano- 

 ther equally characteristic specimen. The shell is most 

 pecidiarly attenuated and curved back towards the base, 

 and the fronds are branched and ramified with remarkable 

 sharpness and delicacy. 



Sijecies 130. (Mus. Belcher.) 

 MuREX CENTRIFUGA. Mur. trigono-fusiformt, gradli, ba- 



sem versus attenuatd,spird acuminata ; anfractibus su- 

 perne subangulatis, transversim creberrime striaiis, tu- 

 bercido unico, et in anfractu ultimo cosiis tribus qua- 

 ternisve, inter varices ; trivaricosd, varicibus subalatis, 

 in spiiiis fortibus latiusculis compressis laciniatis, spina 

 snpremd nmlto maximd, elmigatd, recta ; corneo-fuscd ; 

 aperturd parvd; canali longiusculo, extremitate pau- 

 luliim obliqno-recurvo. 

 The CENTRIFUGAL MuREX. Shell triangularly fusiform, 

 slender, attenuated towards the base, spii'e acumi- 

 nated, whorls slightly angulated at the base, trans- 

 versely very closely striated, with a single tubercle, 

 and in the last whorl three or four ribs, between the 

 varices ; three varicose, varices subwinged, laeiniated 

 into rather wide strong compressed spines, the upper- 

 most of which is much the largest, elongated and 

 straight ; horny brown ; apertm-e small ; canal rather 

 long, a little obliquely recurved at the extremity. 

 Hinds, Mollusca Voy. H.M. S. Sulphm-, p. 8. pi. 3. f. 7, 8. 

 Hub. West coast of Veragua (tbedged from a sandy floor 

 at the depth of fifty-two fathoms) ; Hinds. 

 A species which may be easily recognised by the three 

 horn-bke protuberances with which each whorl is sur- 

 mounted at the angle. 



