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in breadth) arises and extends up the stalk, gradually tapering till the stalk has 

 reached its normal thickness at the origin of the lowest pinnules. 



The rachis is nearly 30 mm. in breadth. The bare prorachidial surface is 

 2'3 mm. across. The three large and well-developed rays in the pinnules give 

 the specimen a very stiff and spiny appearance. The pinnules may lie said 

 to be sword-shaped, and vary in width from 2-3 mm. The prorachidial edge 

 is occupied by the strong first ray, which consists of about three long spicules. 

 The presence of only three rays is a distinctive feature of this spec; 



The following measurements were taken of the two specimens : 



Locality : Station 259 ; 10 08' 43" N., 75 33' 30" E. ; 56 fathoms. 



