66 FOSSIL ECHINI OF THE WEST INDIES. 



Cuba, Poey collection; 1 specimen, Philadelphia Acad. Nat. Sci. No. 

 3350. Cotteau records this species from the "Miocene" of San Martin, 

 Matanzas, Cuba. 



Echinolampas castroi Cotteau. 



Echinolampas castroi Cotteau, 1881, Ann. Soc. Geol. Belgique, vol. 9, p. 19, plate 2, figs. 

 3 to 6; 1897, Bol. Com. Mapa Geol. Espafia, vol. 22, p. 57, plate 3, figs. 3 to 6. 



Cotteau ascribes this species to the Eocene and says it is rare, environs 

 of Matanzas, Cuba, and that he has material in his own collection. 



Echinolampas anguillae Cotteau. 

 (Plate 11, Figures 7 to 9.) 



Echinolampas anguillce Cotteau, 1875, Kongl. Sven. Vet. Akad. Handl., vol. 13, No. 6, p. 24, 

 plate 4, figs. 6 to 8. Guppy, 1911, Quart. Jour. Geol. Soc. London, vol. 67, p. 692. 

 Lambert, 1915, Mem. Soc. d'Agric. de 1'Aube (Troyes), vol. 79, p. 30. 



Echinolampas lycopersicus Guppy (pars), 1882, Scientific Assoc. Trinidad, Proc., part 12, 

 p. 196. 



The following is an extract from the original description of this species : 



Species of large size, elongate, rounded, and a little narrowed anteriorly, 

 more dilated and slightly subrostrate posteriorly; upper face swollen, 

 elevated, subconical, sloping on the sides, having its greatest height through 

 the apical disk. Lower face subcushion-like, rounded on the borders, 

 deeply depressed in the middle. Apical disk excentric anteriorly. Ambu- 

 lacral areas are wide, petaloid, subcostulate, and very open distally, though 

 somewhat contracted at that point. The anterior ambulacrum III is 

 straighter and a little narrower than the others, the posterior pair I and 

 V is longer. Poriferous areas are depressed, formed of very unequal pores, 

 the internal being rounded, the external long, narrow, and transverse. At 

 a certain distance from the border the areas cease to be petaloid and the 

 pores are reduced to single pores ranged by oblique pairs and very difficult 

 to see among the tubercles. The tubercles are scrobiculate, crowded, 

 homogeneous, and everywhere very abundant. The peristome is a little 

 excentric anteriorly, appearing to be longer transversely, opening in a 

 deep depression of the lower side. The periproct is transversely elliptical, 

 subangular, and inframarginal. 



There is only one specimen in the Guppy collection, and that appears 

 to be the only one Cotteau had, as he says it is very rare and does not 

 figure or mention any other. It measures 38 mm. in height, 75 mm. in 

 length, and 60.5 mm. in width. This species is very close to lycopersicus 

 and seems to differ principally in its massive and subconical form. The 

 type is more deeply concave ventrally than lycopersicus, which is very 

 shallow in its ventral depression. It may be observed that other speci- 

 mens that are referable to anguillce have a somewhat shallower ventral 

 depression than the type. Guppy, in his 1882 paper, considered 

 anguillce as simply an unusual form of lycopersicus, but it seems a fairly 

 distinctive species to maintain. 



Oligocene, Anguilla formation, Anguilla, Guppy collection ex Cleve. 

 holotype, the original of Cotteau's plate 4, figures 6 to 8, 1 specimen, 



