CRINOIDEA AND ECHINOIDEA 



37 



in this species are most interesting and a large series of speci- 

 mens is greatly to be desired. 



Station 52. Florida: about 10 miles off American Shoal 

 Light, 105-110 fms. 1 specimen. 



Meoma ventricosa 



Spatangus ventricosus Lamarck, 1816. Anim. s. Vert., S, p. 29. 

 Meoma ventricosa Liitken, 1864. Vid. Med. f. 1863, p. 120 A. Agassiz. 

 1872, Eev. Ech., pi. XXII, figs. 3 and 4. 



This conspicuous West Indian spatangoid is not mentioned 

 in the "Narrative" but there is a large, bare test in the collec- 

 tion, from Eleuthera Island, Bahamas. It measures 160 mm. 

 long, 125 mm. wide and 77 mm. high. This is an unusually 

 large size but by no means the maximum. The largest speci- 

 men I have seen (M. C. Z. no. 3159) is 175 mm. long, 152 mm. 

 broad and 90 mm. high. 



Plagiobrissus grandis 



Echinus grandis Gmelin, 1788. Sys. Nat. ed. 13, 1, pt. 6, p. 3200. 

 Metalia pectoralis A. Agassiz, 1872. Rev. Ech., p. 361; pi. XXI, figs. 4 

 and 5. 



Plagiobrissus grandis H. L. Clark, 1917. Mem. M. C. Z., 46, p. 207. 



There is no specimen of this truly magnificent spatangoid, 

 common in some parts of the Bahamas, in the Iowa collection, 

 but in the ''Narrative" (p. 134) it is stated that ''a portion of 

 the test of a Metalia was picked up near Bird Key." The spe- 

 cies is not otherwise known from the Tortugas but as it is 

 known from the west coast of Florida (Tampa Bay), it will 

 probably be found there some day. 



