BULLETIN 



Buffalo Society of Natural Sciences, 



VOLUME V. NO. 1. 



NEW GENERA AND SPECIES OF FOSSILS FROM 

 THE NIAGARA SHALES. 



BY EUGENE N. S. RINGUEBERG. 



SQUAMASTER (N. Gen.). 



Body small. Rays long, slender, tapering, flexible, and divided 

 into annular segments. 



Ventral side of ray with two series of paired, opposite ambu- 

 lacral plates, divided by a straight median line; they are irregu- 

 larly sub-quadrilateral, with one short side, and are arranged in 

 pairs in each series, so that two long and two short sides are 

 joined alternately, consequently there is a long transverse suture 

 regularly alternating with a short one. This disposition gives 

 dentate lateral margins to the ambulacral series. The lateral 

 ends of the long transverse sutures curve away from each other, 

 leaving a small notch between the inferior plates of each pair 

 and the superior plates of the adjoining pairs. This notch 

 receives the inner lateral corners of the squamose dorsal plates. 

 Between the dentate elevations of the ambulacral plates and the 

 lateral margins of the dorsal plates there are large triangular 

 openings, which constituted, or in which were placed the pores. 

 1 



