STYLONURUS LOGANI. 



131 



Geological Survey of Canada, whose great services to geological science, as well as his 

 kindly disposition to all, will long cause him to be remembered and esteemed. 



Fig. 39. — Stylonurus Logani, H. Woodward (restored). 



About natural size. From the Upper Silurian, Lesmahagow, Lanarkshire. 



1. Dorsal view. 2. Ventral aspect. 



(Only the 10 anterior body-segments are preserved; the hinder part and the telson are added from the evidence afforded 

 by the specimen of Stylonurus Powriei from the Devonian. See PI. XXI, rig. 1.) 



Formation. — Upper Silurian. 



Locality. — Logan Water, Lesmahagow, Lanarkshire. 



The original specimens are in the collection of James Powrie, Esq., F.G.S., of Res- 

 wallie, Forfar, and in the Museum of Practical Geology, Jermyn Street. 



