SOWERBY : DESCRIPTION OF A NEW SPECIES OF LATIRUS. I39 



Mauritius. Bourbon. Rodriguez. Seychelles. 



Otopoma 5 ... 1 ... 1 ... 1 



Cyclotopsis 1 ... — ... — ... — 



Otnphalotropis 14 ... 5 ... 3 ... — 



Helicitia 1 ... — ... — ... 1 



LIST OF AUTHORITIES. 

 For Madagascar : 



Von Martens, SB. Berl. Gesell. Nat. Fr., 1887, p. 179. 



Ancey, Bull. Soc. Mai. Fr., 1890, p. 343. 



E. A. Smith, P.Z.S., 1882, p. 375 ; Conchologist, 1892, p. 92. 



Mousson, Journ. de Conchyl., 3 Ser., xxii., p. 37. 



Crosse and Fischer, ibid., xx., p. 139; xxii., p. 54; xxviii., p. 100 ; 



same authors in Grandidier, Hist, de Madagascar. 

 Mabille, Bull. Soc. Mai. Fr., i., 139; Bull. Soc. Philom. (7), x., 



1886, p. 124, 182. 

 Poirier, Bull. Soc. Mai. Fr., iv., p. 195. 

 For Mauritius, &*c. : 



Von Martens in Mobius, Beitrage zur Meeresfaunen der 



Mauritius, &c. 

 Heynemann, Jahrb. Deutsch. Malak. Gesell. xii., 1885, p. St,. 

 Morelet, Journ. de Conchyl., 3 Ser., xxii , p. 85. 

 Crosse, ibid., xiv., p. 221. 



DESCRIPTION OF A NEW SPECIES OF LATIRUS. 



By G. B. SOWERBY, F.L.S., F.Z.S., 

 London. 



Latirus maximus, sp. nov. 

 (PI- 1, fig. 5.) 

 Testa fusiformi-iurbinata, solida, ponderosa, laevigata, fusca, 

 7>e/ albida, fusco irregulariter strigata et vittata ; Spira breviter 

 turrita, obtusa, sutura irregulariter impressa ; anfractus obtuse 

 angulati, cost is obtusis latis niuniti : anfractus ultimus spira in 

 superans, sub-quadratus, irregulariter vel sub-obsolete costatus, 

 infra medium constrictus, basin versus spiraliter sulcatus, breviter 

 caudatus ; apertura subovata, fauce alba, tenuissime lirata ; 

 columella albo-callosa, leviter granulata, plicis inconspicuis. 

 Long. 90 maj. diam., 50 millim. 



Habitat : I. S. Thiago, Cape de Verd Islands (Eudel). 



