No. 1895. A NEW GENUS OF PHRYNOCRINIDJE— CLARK. 197 



to whicli it is attached; the sides are strongly convex, the maximum 

 height being just above the center; the following columnars are 

 small and short, with strongly and evenly convex sides, 3 mm. long 

 nntl 2.5 mm. across the ends; their median diameter, at the height 

 of the convexity, is 3 mm.; there is veiy little difference between the 

 two axes of the ellipses forming their proxunal and distal articular 

 faces; after about tlie twenty-fifth columnar from the terminal stem 

 plate the lengtli begins to increase very gradually and the sides to 

 become parallel, later assuming a slight median concavity like the 

 columnars of the large species of Rldzocrinus, the thirtieth from the 

 terminal stem plate being 3.5 mm. in lengtli and 2.5 mm. across the 

 ends, the forty-fourth 4 mm. in length and 2.3 mm. across the ends, 

 the fiftieth 5 mm. in length and 2.3 mm. across the ends; the first 

 three columnars just beneath the calyx are exceedingly short and 

 discoidal, as in Bathycrinus, but beyond these the length rapidly 

 increases. 



Calyx. — Basals five, resembling those of PhrynocriniLS nudus, low 

 triangular, sUghtly over three times as broad as high, in lateral 

 apposition all around the calyx through their slightly blunted lateral 

 angles; their length is 3 mm. to 4 mm., their basal (proximal) \vidth 

 about 1.5 mm. 



Radials five, enormoush^ elongated, about three times as long as 

 their distal width, formmg a compact cylinder as do the basals of 

 Rhizocrinus weheri; each radial is about 5 mm. long in the median 

 line, about 1.5 mm. broad at the base and about 1.7 mm. broad dis- 

 tall}", so that the radial circlet is almost a perfect cylinder; its diame- 

 ter is about 2.5 mm. at the base (the same as that of the basal circlet) 

 and 2.8 mm. distally. 



Superposed upon each radial is a first brachial which is about 1.3 

 mm. in median length and 1.4 mm. broad, the lateral edges straight 

 and parallel, the distal edge straight, the proximal edge strongly con- 

 vex, corresponding to a strong concavit}^ in the distal edge of the 

 radial as in Rhizocrinus. 



Locality. — Albatross station No. 4187; off Kauai (Hanamaulu 

 warehouse, S. 38° 45', W. 8.1'); depth, 508-703 fathoms; bottom 

 temperature, 40.0° Falir.; bottom, gray sand and foraminifera. One 

 specimen, the type of the species. 



Type.— Cat. No. 29573, U.S.N.M. 



