130 Prof. E. Forbes on Fossil Invertebrata from Southern India. 



tato, costis longitudinalibus numerosis, subglbbosis, antice laevi, labro extemo margine crassis- 

 simo, lobato, lobo hamato, dorsaliter canaliculato, antice contorto ; labio interno incrassato, 

 calloso, laevissimo, spiram incrustante ; Cauda angusta, hamata, intorta. 

 Length 1^^ inch. Breadth 1 inch. Length of body- whorl 1 inch. 



Nearly allied to the last species, but at the same time very distinct from it. The 

 general form is somewhat triangular in consequence of the prolongation of the 

 outer lip, which is bordered externally by a very thick margin which contracts 

 centrally, where a single lobe projects in a hook-like form and appears peduncu- 

 lated, since it widens out after leaving the body-whorl : the curve of the hook is 

 upwards, and its apex reaches to about a line with the suture of the first volution. 

 Beneath the hooked lobe the body-whorl very gradually narrows, and at the 

 extremity is strongly curved inwards, forming a hooked canal. The upper half of 

 the body-whorl is ornamented by strong ribs, gibbous in the centre and variable 

 in number. The inner lip is callous, and incrusts the front of the spire. The 

 whorls of the spire are all ribbed. 



Locality, Trinchinopoly. 



Genus Voluta, Linnaeus. 



1. Voluta pyriformis, sp. nov. PI. XIL fig. 1. 



V. testa pyriformi, spiri brevissim&, anfractibus 5, laevigatis, superne ad suturam obsolete 

 excavatis ; apertura lanceolate, columella 4-plicate ; plicis obliquis fortibus, aequidistantibus. 

 Length 4^ inches. Breadth 2 inches. Height of spire Oy'g^ inch. 



Although this shell appears smooth, it is really minutely striated by fine lines 

 of growth: the lower part of the columella is quite smooth, slightly expanded, 

 flattened and polished : the folds of the pillar-lip gradually disappear. From 

 appearances presented by one of the specimens, it is probable that when alive the 

 shell was marked by regular, rather distant, fine longitudinal lines of a light colour 

 on a dark ground. No known cretaceous form of Volute approaches this species. 

 It belongs to the same group with the tertiary Voluta Lamherti, though very 

 distantly related to that species. The Cutch fossils described by Mr. Sowerby 

 under the name of Turhinellus hulhiformis have some relations to this Volute. 



Locality, Pondicherry. 



2. Voluta purpuriformis, sp. nov. PI. XIL fig. 2. 



V. teste ovatji, spira brevi, anfractibus 'J, superioribus convexiusculis, omnibus ad suturam 

 laeviter excavatis, sulcato-striis, striis in medio ultlmi anfractus obsoletis. 



Length 2| inches. Breadth 1^ inch. Height of spire Oy*'^ inch- 



An ovate Purpura-like shell, with rounded whorls and a short spire. The sur- 

 face of the body-whorl is furrowed at the lower part by deep regular spiral strise. 



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