ON A SPECIMEN OF ERYON ANTIQUUS BRODERIP, 

 FROM THE YORKSHIRE LIAS. 



T. SHEPPARD, F.G.S., F.S.A.Scot. 

 Hvll. 



Mr. A. M. Murley has handed to me a glacially striated nodule 

 from the Boulder Clay at Waxholme, East Yorkshire, measuring 

 4 J inches by 3 J inches. This has been split, and reveals an 

 excellent impression of a Crustacean, which Dr. Bather kindly 

 identifies as ' Eryon {Coleia) cf. antiqiius Broderip, or a closely 

 allied form.' The nodule is presumably derived from the 

 Lower Lias of the Yorkshire Coast, from which horizon in other 



-,^' 



parts of Britain this species has been recorded, though this 

 appears to be the first example from Yorkshire. The half of 

 the nodule containing the specimen shows the carapace, 

 abdomen, and one large chelate thoracic leg. The lower part 

 of the abdomen is bent under the body ; the tail-fan, if 

 present, being hidden in the nodule. '• 



The total length of the specimen is 10.5 centimetres. The 

 carapace is about six centimetres wide, though the state of 

 the specimen prevents a definite measurement. The hinder 

 border of the cephalothorax is fairly concave forwards. At 

 a dis;tance of four centimetres from the posterior border, there 

 is a triangular indentation, though the small tooth-like spine, 

 described by Dr. Woodward as occurring on a specimen from 



Naturalist 



