852 Dr Scouler's Description of 



Talpa europsea, common. 



Ursus Meles, in the larger woods ; it is not very frequent. 



Mustek vulgaris, M. Erminea, common. M. Putorius, occasional. M. 



foina, and M. martes, in the Devon woods ; frequent. 

 Lutra vulgaris, in most of the rivers. 



Glires. 



Mus Musculus, M. sylvaticus, M. Rattus. The latter is now a scarce 

 animal, having been superseded by that intruder of Indian origin, M. 

 decumanus. 



Sciurus vulgaris, not abundant. 



Lepus timidus, L. cuniculus. 



Myoxus avellanarius, common in the woods. 



Arvicola aquatica, A. agrestis, common. 



Cetacea. 



Delphinus Phocaena, on various parts of the coast at all seasons, occasionally 

 entering the rivers. 



Two or three instances of tlie larger cetaceous animals having 

 entered our rivers, or been thrown on the coast, are on record ; 

 but excepting the porpoise, none can be considered other than 

 rare accidental stragglers. 



ART. IV. — Description of a Fossil Crustaceous Animal. By 

 John Scouler, M.D. F. L. S. Professor of Natural History 

 in the Andersonian University, Glasgow. ( With a Plate.) 



Crustaceous animals are of comparatively rare occurrence in 

 a fossil state, — a circumstance which may be accounted for, by 

 their delicate structure ; and the determination even of the genus 

 to which a specimen may belong, is often extremely difficult, 

 from the facility with which they lose their characteristic organs, 

 or from these being concealed in the rock in which the specimen 

 is imbedded. The specimen of which we have given a figure, is 

 far from being complete ; but there is enough of it preserved, to 

 enable us to ascertain its characters with some degree of 

 certainty. 



The body is divided into two portions, — the anterior shell, or 

 head, consisting of a single piece, and the posterior part, or tail, 

 (abdomen,) composed of several articulations. The shell, or 

 anterior part, is of an orbicular form, very convex, rounded 

 anteriorly, and on the sides, and terminating posteriorly in a 

 straight line, where it is united to the tail ; while the sides are 

 prolonged a little beyond it into an obtuse angle. On several 

 parts of the surface, the epidermis is still observable ; it is of a 

 black colour, and when viewed through a lens, has a slightly 

 granular appearance, similar to that of the epidermis of the 



