Mr. Lovell Reeve on new Shells. 523 



An exquisitely delicate species in the finest possible condition, 

 perfectly unlike any of this favourite genus hitherto known. It is 

 of an elegantly pyrifonn shape, with the extremities rather produced; 

 the teeth on each side the aperture being especially characteristic, 

 from their strong develoi)ment and deeply grooved interstices. The 

 painting is a delicate profusion of orange-buff dots of different degrees 

 of tone upon a shining pearl-white ground ; the extremities and 

 teeth, the outer of which extend nearly across the base, being tinged 

 with the orange-buff in a darker and brighter hue. 



3. Pyrula (Rhizochilus) De Burghle. Py. testa pyri- 

 formi-ovatay suhanguste umbilicata ; spira hreviuscula, tur- 

 rit a ; anfractihiis superne late angulato-expansis, ad anyulum 

 squar/iis subamplis j)lano-conipressis Jlahellatiiii coronafis, infra 

 basin versus attenuatis^ undique dense liratis, liris suhtilissime 

 serratis ; alba, aperturce fauce sulcata. 



Long. 1^ poll., lat. 1^ poll. 



Hub. China. 



A beautifully turbinated pagoda-like shell, being coronated through- 

 out the expanded angle of the whorls with large compressed fan- 

 shaped scales. It is of the same peculiar typical form as the Pyrula 

 MawcB, the umbilicus being, however, much more contracted, and is 

 believed to be an inhabitant of the same locality. 



I have the pleasure of naming this very delicate and remarkable 

 species in honour of Mrs. De Burgh, a lady, whose warm assiduity 

 and zeal in collecting shells is equalled by her intelligent apprehen- 

 sion of their characters and correct estimation of their comparative 

 rarity and beauty. 



4. Trochus (Euchele) ALABASTRUM. Tro. testa subdepresso- 

 conoidea, anguste profunde umbilicata ; sjnra exserta ; sutura 

 peculiariter profunde excavata ; anfractibus deinde concavis, et 

 fortiter tricarinatis, carinis subirregulariter undatis et exqui- 

 site serratis; calcareo-alba, carinis punctis nigris subdistantibua 

 pecidiariter notatis. 



Long. "I poll., lat. f poll. 



Hub. Island of Diego Garcia, a dependency of the Mauritius. 



Of this very striking species there is a second specimen in the col- 

 lection of jNIr. Cuming. It is of a ]uire chalk-white substance, 

 strongly spirally grooved and keeled throughout, the keels being 

 sparsely dotted with black. 



5. MuREX Barclayi. Mur. testa trigono-ovata, canali bre- 

 viuscida, recurva ; spira b)'evi, acuminata ; atifractibus transver- 

 sini tenuissime serrato-liratis et striatis, longitudinaliter tri- 

 varicosis, varicibus basiii ve?'Stis cotisjncue Jimbriato-laminatis, 

 interstitiis triseriatita tubercidatis et nodatis ; rosaceo-alba, 

 purpurascente et ferruyineo-curneo tincta etmaculatu. 



Long. 3ipoll., lat. If poll. 



Hab. St. Braudou Shoal, near Mauritius (thrown on shore after 

 a hurricane). 



34* 



