600 



Annals or the Carnegie Museum. 



form of the hypostoma, can be made out. It is to be hoped that the 

 attention of collectors may be again directed to these rare trilobites by 

 the recent finds and that more good specimens may be brought to 

 light. 



Fig. I. Dorsal view of the test of a specimen of Cybele ella sp. nov. enlarged 

 7 diameters. 



Order PROP ARIA Beecher. 



Family ENCRINURID.-E Linnarsson. 

 Cybele ella sp. nov. 

 llie single specimen now known is 14 millimeters long, and the 

 greatest width, at the genal angles of the cei)halon is 12 millimeters. 

 Test depressed, wide at the genal angles, and tapering rather raj)idly 

 to a very small pygidium. Axial lobe narrow, convex, the pleura 

 flattened and curving down abruptly at the sides. 



