252 DE. F. A. BATHEE ON TEIASSIC [vol. IxXlii, 



the split one asunder. These split ridges may be the beginning 

 of either the radial ridge-groups or the petals ; their relations to 

 the lumen are obscure, but they coincide with the angles of the 

 peripher}^ which is irregularly and faintly pentagonal. The ridges 

 of JSncrinus liyatti are coarser than those of Entrocliiis in,signis, 

 finer than those of E. ternio. The characters observed are con- 

 firmed b}- squeezes (Brit. Mus., Greol. Dept., E 21819) yerj kindh^ 

 made by Prof. Bassler from specimens studied hj Prof. Clark and 

 now in the U.S. National Museum. 



IsocEiNrs TEECHMAyxi, sp. noy. (Pigs. 9-.13, p. 248.) 



Diagnosis. — Transverse section normally a rounded pentagon, 

 at the syz3^gy a rounded star. Height less than one-third of the 

 diameter. Side-faces smooth, straight. Suture-line Hush, faintly 

 or not at all crenelate. Normal joint-face with lumen minute ; 

 central area raised, smooth, narrow, continuous with the radial 

 crenellse; petal-Hoors raised generally to the level of the crenellse, 

 smooth, narrow, long; radial ridge-groups about 3, inosculating 

 more often than gable-shaped, the distal pair meeting at an angle 

 of about 90°; peripheral crenellse 6 to 8, passing from the inter- 

 radius towards the periphery at an angle which gradually increases 

 to a right angle in the more acentral ridges ; all confluent on the 

 periphery. 



Localit}^ — Caroline Cutting, Hokonui Hills, Southland (N.Z.). 



Horizon. — Kaihiku Beds, Ladino-Carnic. 



Material. — A^arious imprints of columnals on the same rock- 

 fragment as JEntrocJius ternio. British Museum, Greol. Dept., 

 E 22186, E 22187. The holotj^pe is the imprint of a normal 

 joint-face on the latter piece, not the example drawn in fig. 9. 



Description. — The transverse section of a normal internodal 

 is a pentagon, usually rounded, with sides sometimes slightfy convex. 

 A few that show signs of excavation of the sides probably la}" just 

 above the nodes, and received the cirri in their hollowed sides. One 

 such is almost a pentapetalon. Measurements of normal internodals 

 are : — 



Diaineter=.2 mm., 2'3 mm., 2'8 mm. 

 Height=0-75 mm. ; ratio to diameter =0*2 7. 



Side-faces straight and unornamented. 



Suture-lines Hush, noncrenelate in normal internodals ; perhaps 

 obscurel}'' crenelate at or near syzj'gies. 



J in t - f a c e s. — Normal internodal (fig. 9, p. 248) : lumen minute, 

 say 0"1 mm., its section not distinct ; central area raised, smooth, 

 narrow, continuous with the radial crenellse ; petal- floors raised 

 generall}" to the level of the crenelhe, smooth, narrow, long ; radial 

 ridge-groups about 3, inosculating more often than gable-shaped, 

 the adcentral pair tending to fuse with the central area, the 

 acentral meeting at an angle of about 90° ; periphei-al crenellae 

 3 or 5 in small ossicles, from 6 to 8 in full-sized ones (9 in the 



