352 THE CRIXOIDEA CAMERATA OF NORTH AMERICA. 



extremely wide, the facets for the reception of the arms are surrounded by 

 a raised angular edge, and the plates are covered ■with obscure radiating 

 ridges or rows of small tubercles. 



Eucalyptocrinus Egani S. A. Millue. 

 Plate LXXXII. Fi,js. 11 and 12. 



ISSO. S. A. MiLLEK ; Jouru. Ciuciu. Soc. Nat. Hist., Vul. Ill,, p. 140, Plate 4, Pigs. 1 a-c. 



A very elongate species. Height and width of calj^x as 8 to 5 ; height 

 of dorsal cup, compared with the length of the arms, as 2 to 5 ; the length 

 of the neck-like prolongation to the tips of the partitions as 8 to 9 — all 

 measurements made from the casts. Dorsal cup a little higher than wide, 

 obconical, the bottom distinctly truncated and not excavated in the cast, 

 the sides very slightly convex and projecting conspicuously over the sides 

 of the disk. Radials nearlj^ as long as wide. The first costals longer than 

 wide, and narrower above than below ; the second of the same length, and 

 truncated by the interdistichals. Distichals a third smaller than the costals. 

 First interbrachials almost twice as long as wide, widest at midway. Foi'm 

 of the remaining plates indeterminable. Ventral disk but slightly tapering, 

 its upper margin curving abruptly to the base of the neck, which expands 

 rapidly upwards. It rises apparently far beyond the arms, and tapers in size 

 as rapidly as it increases below. 



Horizon and Locality. — Same as last, and the type specimens in the same 

 collection. 



Eucalyptocrinus proboscidalis S. A. Miller. 



Plate LXXXII. Firj. U. 



1882. S. A. Miller ; Journ. Ciucin. Soc. Nat. Hist., Vol. V., Plate 9, Pig. 2. 



Closely allied to the preceding species, but the calyx, to judge from the 

 cast, still more elongate, being to the b se of the neck over twice as long as 

 wide ; the sides of the dorsal cup more convex ; the tegmen higher propor- 

 tionally, less depressed at the top, and more evenly rounded. The neck is 

 more constricted in the middle, and more expanding at the summit, the tube 

 succeeding it thicker at the base, and apparently longer, reaching in the 

 type a length of 43 mm. by 12 mm. in widtli at the l)aso, and 2 nun. at the 

 upper end, tapering gradually. The plates of the dorsal cup, so far as 

 observed, are long, especially the first interbrachials, which are more than 



