145 



MuREx VARicosus, Concli. Illustr. f. 49. Mur. tcstd subclavatd, 

 transverse sulcatd, albd, ad varices fusconigricante : varicibus 

 sex, tumidis, suhfrondosis , antice inciso-fimhriatis , pone frondes 

 Icevibvs, integris, postice ad anfractum proximum dilatatis, ultimo 

 magis expansd, digitatd: spird brevitisculd; suturis anfractuum 

 excavatis : caudd subelongatd, lata : aperturd rotundatd, albd ; 

 canalifere clauso: caudd subelongatd, laid. 

 Long. 170; lat. ex. var. -80. 



Hab. ? Mus. Stainforth. 



This species differs from M. secundus, in being much less oblique, 

 in not having the labial varix so much larger than the rest, in ha- 

 ving a greater number of varices and a somewhat longer spire and 

 in attaining a larger size. 



MuREx DiGiTATus, Conch. Illustr. f. 79. Mur. testa pyriformi, 

 transverse costata, roseo-fulvd: spird breviusculd; anfractibusquin- 

 que, ventricosis, angulatis, superne complanatis ; suturis excavatis : 

 caudd longiusculd, ad basin lata, gradatim angustiore : varicibus 

 octo, costatis, digitalis, postice usque ad meditim proximi atifractfis 

 prolatis; digitis numerosis, nigrescentibus , subproclivibus, rugosis, 

 palmatis, minoribus alternantibus : aperturd ovali; labio externa 

 crenulato ; lamind canalis latd. 

 Long. 1-55 ; lat. ex. var. 80 poll. 

 Hab. ad insulam Messonam. Mus. Cuming. 

 In general form resembling M. Scorpio, M. secundus and M. va- 

 ricosus, but differing from them in being much straighter, having 

 many more varices, the digitations being less connected, and in their 

 being continued across the body of the shell in the form of intersti- 

 tial ribs. " 



MuREX MEGACERUS, Couch. Illustr. f. 18. Mur. testa rhomb oided, 

 subventricosd, fulvo-rufescente, intils albd, transverse scabroso- 

 sulcatd : varicibus quinque, ad caudam exfoliatis ; frondibus sub- 

 rectis, crassis, ad terminum foliatis, una ad unguium anfractuum 

 magna, deinde tribus mediocribus, cum quatuor parvis,procUvibiis, 

 alternantibus ; ad caudam tribus mediocribus: interstitiis costd quin- 

 quefariam tuberculiferd : aperturd ovali, postice canaliferd, sub- 

 angulatd, margine dentato, undato ; canali aperto : caudd longitu- 

 dine spiram aquante, latd, subrecurvd. 



Long. 3'45; lat. ex. var. 1'90 poll. 



Hab. ad mare Pacificum. 



Distinguished by the thick, straight, prominent frond on each of 

 the five varices. 



MuREX FALCATUS, Couch. Illustr. f 31. Mur. testd fusiformi, 

 tenui, albd, fulvo-fasciatd; anfractibus angulatis, apicem versus 

 cancellatis : varicibus quinque ad septem, alatis, Icevibus, postice 

 elongatis, falcatis, ad marginem posticum plied involutis, ad cau- 

 dam exfoliatis: interstitiis in medio uni-plicatis : caudd elongatd, 

 subrecurvd: aperturd ovali, postice angulatd ; margine externo per- 

 elevato, subcrenato ; canali clauso. 



