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 pyriform shape, with the extremities rather produced ; 

 the teeth on each side the aperture being especially characteristic, 

 from their strong development 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 BuRGHiiE. Pyr. testa pyri- 

 formi-ovata^ suhanguste umbilicata ; spira hremuscula, tur- 



rita ; anfractibus superne late angulato-expansis^ ad angulum 

 squaniis subamplis plano-compressis flabellatim coronatiSy infra 

 basin versus attenuatis, undique dense liratisj liris subtilissime 

 serratis ; alba, aperturcefauce sulcata. 

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

 Hab. China. 



A beautifully turbinated pagoda-like shell, being coronated throughr 

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

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

 Mawce, 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 cpmparative 

 rarity and beauty. 



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

 conoidea, anguste profunde umbilicata ; spira exserta ; sutura 

 peculiariter profunde excavata ; anfractibus deinde concavis, et 

 fortiter tricarinatisy carinis subirregulariter undatis et exqui- 

 site serratis; calcareo-alba, carinis punctis nigris subdistantibus 

 peculiariter notatis. 



Long, f poll., lat. f poll. 



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



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

 lection of Mr. Cuming. It is of a pure chalk-w^hite substance, 

 strongly spirally grooved and keeled throughout, the keels being 

 sparsely dotted with black. 



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

 viuscula, recurva ; spira brevi, acuminata ; anfractibus transver- 

 sim tenuissime serrato-liratis et striatis, longitudinaliter tri- 

 varicosis, varicibus basin versus conspicue fimbriato-latninatis, 

 hiterstitiis triseriatim tuberculatis et nodatis ; rosaceo-alba, 

 purpurascente et ferrugineo-carneo tincta etmaculata. 



Long. 3i poll., lat. 1 J poll. 



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

 a hurricane) . 



34* 



