SYSTEMATIC DESCRIPTIONS SPATANGINA. 97 



This fine species by far surpasses in size any other West Indian species 

 of the genus and makes no close approach to any of them. It is clearly 

 characterized by its great size, low, rounded dorsal outline, and the great 

 swelling ventrally of interambulacrum 5 near the posterior border of the 

 test. While the holotype is the more perfect specimen as a whole, the 

 second specimen, or paratype, shows interambulacral suture lines and in 

 protected spots very well preserved tubercles. I take great pleasure in 

 naming this species for Dr. T. Wayland Vaughan, who has done so much 

 to elucidate the geology and palaeontology of the \Vest Indies. 



Oligocene, Antigua formation, bluff on north side of Willoughby Bay, 

 Antigua; T. W. Vaughan collector, 1914; U. S. Geol. Sur. station 6881; 

 2 specimens, the holotype, U.S. Nat. Mus. No. 328245; and a paratype, 

 U. S. Nat. Mus. No. 328246. 



Eupatagus species b. 



This species is represented by a single specimen, too incomplete for 

 description, but representing a very large species distinct from others 

 known, but nearest to Eupatagus vaughani. The test is elongate, very 

 low and wide. The apical disk is posterior to the center, being about 

 90 mm. from the anterior border. Petals 1 1 and IV are widely divergent ; 

 petals I and V are sunken, and present an acute angle posteriorly. The 

 outer pores are elongate, oval, the inner pores rounded, the pores of each 

 pair being connected by a furrow. The interporiferous area is twice the 

 width of a poriferous area. The width of petal I at its widest part is 

 22 mm., and of petal IV is about 20 mm. Ambulacrum III is imper- 

 fectly visible in part, but it is apparently flush, straight, and much 

 narrower than the other ambulacral areas. 



The specimen is about 145 mm. in length and about 130 mm. in width ; 

 it is very low, but the height is unknown, as the specimen is too incom- 

 plete to allow any accurate vertical measurement. It is a pity that it 

 is not better preserved, as it represents a fine and very large species. 



Eocene, St. Bartholomew limestone, Governor's Bay, point between 

 the bay and Grand or Negre Point, St. Bartholomew, 1 specimen, T. W. 

 Vaughan collector, 1914; U. S. Geol. Sur. station 6921 ; U. S. Nat. Mus. 

 No. 328224. 



Genus BREYNIA Desor, 1847. 



Type species. Spatangus crux-andrece. Lamarck, 1816, Anim. sans 

 Vert., vol. 3, p. 31 = Spatangus australasice Leach, 1815, Zool. Misc., 

 vol. 2, p. 68, plate 82. 



Breynia cubensis Cotteau. 



Breynia cubensis Cotteau, 1875, Kongl. Sven. Vet. Akad. Handl., vol. 13, No. 6, p. 7; Ann. 

 Soc. Geol. Belgique, vol. 9, p. 43, plate 4, figs. 4 to 6; 1897, Bol. Com. Mapa Geol. 

 Espana, vol. 22, p. 87, plate 25, figs. 4 to 6. 



The genus Breynia is an I ndo- Australian type in the Recent fauna, 

 and it is quite remarkable that a fossil West Indian species should have 



