140 



the groups of wliich M. MotaciUa and M. ternispina may be taken as 

 the types. It was dredged at Cagayan in sandy mud, at a depth of 

 25 fathoms. 



MuREX ELEGANS, Conch. Illustr. f. 84. Mur. testd clavatd, ven- 

 tricosd, rhomboided, lavi, transverse costatd, albd, costis fusco- 

 lineatis ; varicibus tribus, crassis, rarissime subsjiinosis ; inter- 

 stitiis bituberculatis ; aperturd ovali, labia externa crenulato ; caudd 

 elangatd, recurvd, antice latd, angulatd. 

 Long. 215 ; lat. ex. var. 1 poll. 



Hab. ? Mus. H. Cuming. 



A much smoother shell than M. MotaciUa, and having two large 

 tubercles between the varices, instead of three. It has been named 

 as above by Dr. Beck in collections, but we believe has never been 

 described. 



MuREX siMiLis, Conch. Illustr. f. 69, 70. Mur. testd subfusifor- 

 mi, subventricosd, transverse interrupto-costatd, pallide fulvd, 

 transverse bifasciutd rel interrupto lineatd : varicibus tribus, cos- 

 tatis ; ad unguium anfractuvni una spind brevi, deinde quatuor ad 

 quinque anteriaribus minimis, ad caudam una spind brevi ; inter- 

 stitiis trifaridm nadulasa-castatis : caudd recurvd longiusculd pos- 

 tice latd, angulatd eifoUatd ; aperturd avali ; labia extante, intus 

 leviter crenulato; labro crenulato. 

 Long. 1-90; lat. -8. 



Hab. ? Mus. Saul. 



The spire is much more elongated, the varices more spinose and 

 less thickened, and the caudal canal less elevated than in M. Mota- 

 ciUa, which, in general characters, it much resembles. 



MuREx scABROSus, Couch. Illustr. f. 73. Mur. testd subturbinatd, 

 ventricosd, crassd, corrugatd, transverse lineis elevatis, scabrosis, 

 distantibus, castatd, pallide fulvd, fusco-maculatd ; spird brevi, 

 obtusd, anfractibus sex ventricosis, suturis validis ; caudd langi- 

 tudine aperturam aquante, rectd, crassd, latd, exfoliatd, ad basin 

 sub-coarctatd ; varicibus tribus, validis, costatis, postice excavatis ; 

 costarum, und ad angulum pasticum subspinasd, tribus ad partem 

 anticam anfractus antice fimbriatis, tribus ad caudam, validis, 

 subspinosis, subfimbriatis ; interstitiis tuberculis tribus corrugatis 

 antice ad basin caudee Iceviusculis ; aperturd magnd, albd, rotun- 

 datd ; labia interna Icevi, decvmbente, purpurea ; labia externa cre- 

 nulato ; canali aperta. 

 Long. 220; lat. ex. var. TIO {spira, ^; apertura, ^ ; cauda, ^). 



Hab. } Mus. Saul. 



We have only seen one specimen of this shell, which resembles, 

 in some degree, the young of M. pamum ; but the varices are nar- 

 rower, the tubercles smaller, and there is a smooth space just below 

 the ventricose part of the last whorl. 'J'he caudal canal is larger 

 and straighter. 



MuREX Banksi, Conch. Illustr. f. 82. Mur. testa fusiformi. 



