MUREX. 



Plate XX. 



Species 79. (Mus. Saul.) 



MuREX NIGRISPINOSUS. Mur. elonyato-clavcpformi, iraus- 

 versim liratd et striata, liris intsqualibus, subnodosls, 

 spmt breviusculd ; trifariam varicom, varicihus spino- 

 sis, Spink erecto-elongatis ; cnnnli elowjato, ad extn- 

 mitatem leviter reciirvo, spinoso, spiiiis longis, mbcur- 

 vatis, purpurascente-albd, fasciis trihus vel giiaternis 

 fuscescendbu-s subindistvicti cingulatu, spiiiis purpureo- 

 nigricantibus. 



The black-spined Murex. Shell elongately club-shaped, 

 transversely ridged and striated, ridges unequal, 

 slightly nodose ; spire rather short ; three-varicose, 

 varices spinous, spines erectly elongated ; canal elon- 

 gated, slightly curved back at the extremity, spined, 

 spines long, a little curved ; purplish white, some- 

 what indistinctly encircled with three or foiu- light 

 brown bands, spines purple-black. 



Reeve, Pro. Zool. Soc, 18-15. 



Hab. ? 



This shell should, 1 think, be distinguished from the 

 Murex tribulm, to which it is most nearly allied. Its cha- 

 racters throughout present an agreable modification which 

 is constant in all the examples I have seen. 



Species 80. (Mus. Cummg.) 



MUEEX PLICIFERUS. Mur . testd uvato-fusiformi, mediu 

 ventricosd, traiitversim siibtiliter liratd, liris anguslU, 

 nmnerosis, rugis minutk longitudinalibus undique gra- 

 ■ noso-deaussatis ; tuberculis duobus plicato-elongatii in- 

 ter varices ; trivaricosd, varicibus spinis canalicuiatis 

 brevibm iueEqualibus, quaritni und a/died subconspicud, 

 aniatis ; alba, aurantio-fuscescente pallide titictd ; ca- 

 nali subelongato, recurvo. 



The plicated Murex. Shell ovately fusiform, ventri- 

 cose in the middle, transversely finely ridged, ridges 

 narrow, numerous, granosely decussated throughout 

 with minute longitudinal wrinkles, with two plicately 

 elongated tubercles between the varices ; three-vari- 

 cose, varices armed OTth short unequal canaliculated 

 spines one anterior of which is conspicuous ; white, 

 faintly tinged witli orange-brown ; canal rather elon- 

 gated, recurved. 



Sowekby, Pro. Zool. Soc, IStO. 



Hab. ? 



-V fine species, of which 1 do not remember to have seen 

 any other specimen. The back of it is well figured in 

 Sowerby's ' Conchological Illustrations,' Murex, 1 101. 



Species SI. (Mus. Saul.) 



Murex occa. Mur. testd clavaformi, hevi, ant obsoletl 

 striatd; anfractihis superne angulatk, riodis duobus 

 inter varices ad angulum armatis ,• trifariam varicosd, 

 variciius spinosis, spinis longiusculis, swrsnm inclinatis ; 

 luteo- aut cinereo-ceerulescente ; canali longmimo, recto, 

 trifariam spinoso ; apertitrd ovatd, labro dente plami- 

 lato erecto munito. 



The harrow Murex. Shell club-shaped, smooth or ob- 

 soletely striated ; whoris angulated at the upper part, 

 armed upon the angle between the varices with two 

 nodules ; three-varicose, varices spinous, spines rather 

 long, bent upwards, yeUowish or ashy blue; canal 

 very long, straight, armed with three rows of spines ; 

 aperture ovate, lip furnished with an erect flattened 

 tooth. 



SowERBY, Pro. Zool. Soc, 1840 ; Conch. Illus., Murex,^.^^. 



Hab. Island of Nicobar (found in sandy nuid); Commo- 

 dore Ludlin. 



An excellent species which may be recognised by the 

 smooth, angular structure of the spire, and the upward 

 inclination of the spines. 



Species 82. (Mus. Metcalfe.) 



Murex tribulus. Mut. testd trigom-clavcBformi, trans- 

 versim obtnso-liratd, liris alternis majorihus, intersti- 

 tiis rugosis ; trifariam varicosd, varicibus spinosis, 

 spinis longiusculis, validis, inferne crassis ; pallidi 

 fulvd, liris fusco alboque pltis minusve distincte articu- 

 latis ; canali longissiuio, recurvo. 



The bramblex Mure. SheU triangularly club-shaped, 

 transversely obtusely ridged, alternate ridges the 

 larger, interstices wrinkled ; three-varicuse, varices 

 spinous, spines rather long, strong, tliick at the base : 

 pale fulvous white, ridges more or less distinctly arti- 

 culated with brown or white ; canal very long, re- 

 curved. 



June 1845. 



