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XII. — Description of some Fossil Crustacea and Radiata, found at 

 Lyme Regis, in Dorsetshire. 



By W. J. BRODERIP, Esq., F.G.S., F.U.S., &c., V.P.Z.S. 



[Read June 10, 1835.] 



JLORD COLE and Sir Philip Eg-erton having placed in my hands some 

 fossils, which they have lately found at Lyme Regis, I proceed to describe 

 those which appear to me to be new. (See Plate XII.) 



I. Crustacea. 

 The first of this class to which I shall call attention is a crustacean, which 

 must have been of considerable size, and which, from its form, appears to me 

 to be very interesting. Though the post-abdomen, or tail, as it is vernacu- 

 larly called, is entirely wanting, enough remains of the anterior parts to in- 

 dicate in a satisfactory manner the organization of the animal, and its place 

 among its congeners. The lamellae of the external antennae would show 

 that it was a macrourous decapod, of the Shrimp family {Salicoques of the 

 French), and the chelae have some characters approaching to those of Palae- 

 mon ; but the absence of the serrated rostrum and the presence of other cha- 

 racters forbid us to arrange it under that genus. The middle notch of the 

 carapace, and indeed the general form of that part are very like Palinurus, If 

 the habits of this animal may be considered to have approached those of the 

 Shrimps (and the very thin armour of the carapace would lead a good way to 

 this conclusion), its remains are those of a comparative giant of that race, fit 

 to grapple with the decomposing flesh of the Enaliosaurians. Upon the 

 whole evidence the place of this animal appears to me to be between Palinu- 

 rus and the Shrimps, and its organization leads me to consider it as a crusta- 

 cean sui generis*. I have named it in honour of Lord Cole, whose zeal in 



* M. Milne Edwards, in his Histoire Naturelle des Crustaces (torn. ii. p. 337.), gives the cha- 

 racters from my description in the " Proceedings," and says, " Le Genre Coleia, etabli recemment 

 par M. Broderip, d'apres un Crustace fossile du Lias, n'est aussi qu' imparfaitement connu, mais 

 nous parait devoir etre intermediaire entre les Astaciens et les Salicoques ;" and he, accordingly, 

 places it between Nephrops and Crangon. When M. Milne Edwards wrote, the smaller but 

 more perfect specimen with the post-abdominal segments was not known to me, nor were 



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