234 Mr. George Tate on the Fame Islands. 



BRACHIOPODA. 



Spirifer trigonalis, Mart. Fame, Fosseland : one of the commonest fossils 

 in the Mountain Limestone of Northumberland. 



glaber. Mart. Fosseland. 



lineatus. Mart. Fosseland. 



imbricatus, Sow. Fosseland. 



sexradialis, Phil. Fosseland. 



Orthis crenistria, Phil. Fame. 



Productus Flemingii, Sow. Fame, Fosseland. 



lobatus. Sow. Fame, Fosseland. 



scabriculus, Mart. Fosseland. 



semireticulatus, Mart. Fame. 



Martini, Sow. Fosseland. 



punctatus. Mart. Fosseland. 



Chonetes sordida. Sow. Fosseland. 

 Discina nitida, Phil. Fosseland. 

 Lingula marginata, Phil. Fosseland. 



CONCHIFERA. 



Amesium Sowerbyii, M'Coy. A pretty species with zigzag markings on 



the surface. Fosseland; it is also found at Denwick and Howick. 

 Aviculo-pecten ajquaUs, M'Coy. Fosseland. 



Hardingii, MCoy. Fosseland. 



Myophoria carbonaria. Sow. Fosseland : this species occurs at Holy Island. 



GASTEROPODA. 

 Naticopsis pHcistria, Phil. Fosseland. 



CEPHALOPODA. 



Nautilus globatus. Sow. Fosseland. 



CRUSTACEA. 



Genus Griffithides, Portlock. 



Cephalic shield semielliptical ; glabella gibbous, rounded in 

 front, contracted posteriorly into a narrow neck^ without seg- 

 mental furrows; eyes lunate; thorax of nine segments, or with 

 the neck-segment ten ; pygidium with segmental furrows in 

 both axal and lateral lobes. This genus has been found only 

 in the Mountain Limestone formation ; six species from Britain 

 have been described. 



Griffithides Farnensis, n. s. Fosseland. Plate I. fig. 4, 



Ovate : length including mucro '92 inch, greatest breadth '53 ; 

 glabella pyriform, rounded in front, and gradually narrowing 

 towards the base ; eyes prominent, with numerous hexagonal 

 lenses ; win^s broad, convex, with about ten longitudinal parallel 

 striae on the outer side, partly concealed in front, and extending 

 posteriorly, and ending in spines near the sixth thoracic segment ; 

 thorax, length '22, breadth '15, anterior axal segments broader 



