4 MUREX. 



11. teenispina, f. 1, Lamarck. — M. tribulo similis, griseo- 

 subviridis, spinis rectioribus, liris spiralibus baud crenulatis, 

 tuberculis interstitialibus nullis, interstitiia solum crenulatis. 

 — The colour is more greenish-grey than in M. tribulus, with 

 the spines much straighter, the interstices only, and not the 

 spiral ridges crenulated ; no tubercular plaits between the 

 varices. 



12. nigrispinosds, f. 11, Reeve. — Testa ternispince similis, 

 sed spinis crassis, rectioribus, nigris, anfractibus ventricosis, 

 varicibus latioribus. — Remarkable for the darkened ends of 

 its thick straight spines placed on broad varices. 



13. plicatus, f. 9, Soiverby. — Testa griseo-purpurascens 

 superne lata, ventricosa, inter varices plicato-tuberculata ; 

 varicibus tribus, crassis ad angulum anfraetuum unispinosis, 

 infra quinque-spinosus ad caudam trispinosus, cauda brevi- 

 uscula, apertura magna ; spira brevi, anfractibus angulatis. 

 — Very ventricose in the body part, with thick varices and 

 short spines. 



14. funiculatus, f. 19, Reeve. — Testa breviter claviformis, 

 fulva, rubro-lineata, inter varices plicato-trituberculata, varici- 

 bus tuberculatis ; spinis ad angulum una brevi curva, infra 

 tribus parvis ad canalem una, canali breviusculo, subrecurvo ; 

 apertura ovata utrinque denticulata, margine externo crenu- 

 lato. — Resembling M. messorius, but with strong red lines on 

 the tubercles, and only one very small spine on the canal. 



15. eecprvirostris, f. 16, Broderip. — Testa claviformis 

 fulvo-purpurea, subglobosa, spiraliter tuberculato-lirata, spira 

 brevissima, varicibus sub-spinosis, spinis parvis, ad canalem 

 una aut duabus ; apertura rotunde ovata utrinque dentata et 

 crenulata ; canali breviusculo recurvo. — The body is small, 

 the spines very short and few. 



16. nigrescens, f. 18, Sowerby. — Testa quam M. recurvi- 

 rostris magis ventricosa, purpurea, nigrofasciata, spinis ob- 

 tusissimis, canali brevi, arcuato, unispinoso. — Deeper in the 

 body-whorl and more ventricose than M. recurvirostris. It 

 may be known partly by an inkiness in the colouring. The 

 tubercle on the angle of the varices is scarcely developed into 

 a spine. 



17. rectirostris, f. 15, Sowerby. — Testa clavata, fulva, 

 castaneo bifasciata, spiraliter lirata, inter varices plicato 

 trituberculata, anfractibus brevibus, sutura excavata; vari- 



