28 FOSSIL ECHINI OF THE WEST INDIES. 



Genus LANIERIA Duncan, 1889. 



Type species. — Echinoconus lanieri Cotteau, 1881, Ann. Soc. Geol. 

 Belgique, vol. 9, p. 11. 



Lanieria lanieri (Cotteau). 

 (Plate 2, Figures 2 to 5.) 



Echinoconus lanieri Cotteau, 1881, Ann. Soc. Geol. Belgique, vol. 9, p. 11, plate 1, figs. 

 7 to 13. A. Agassiz, 1883, Mem. Mus. Comp. ZoOl., vol. 10, No. 1, p. 88. Cotteau, 

 1897, Bol. Com. Mapa Geol. Espafia, vol. 22, p. 19, plate 2, figs. 7 to 13. 



Lanieria lanieri Hawkins, 1913, Geol. Mag., vol. 10, p. 200, figs. A, B. 



The following is an extract from the original description of this 



species : 



Species of small size, high, circular, globular; upper face rounded, some- 

 times subconical; lower face flattened around the peristome. Ambulacra 

 straight, a little more than half the width of the interambulacra ; ambulacral 

 pores very small, close together, separated by a small elevation, very directly 

 superposed, showing toward the ambitus and as far as the peristome a 

 tendency, more or less pronounced, to group themselves in triple pairs. 

 Tubercles small, crenulate, perforate, increasing in size on the ventral 

 face, disposed in horizontal and vertical series, somewhat irregular, and 

 the number varying with the size of the individual. The space between 

 the tubercles is occupied by granules grouped around the scrobicules. 

 Peristome small, circular, central; periproct large, elliptical, acuminate 

 on its adapical border, situated on lower face, very near the peristome. 

 Apical disk prominent, pentagonal, with very large genital pores; the 

 madreporite extending to the center of the disk which it fills ; ocular plates 

 small, triangular, separating the genitals and broadly in contact with the 

 extended madreporite. 



Of this very pretty species there are 4 specimens in the Philadelphia 

 Academy of Natural Sciences. The largest of these measures 18 mm. 

 in height and 23 mm. in diameter. Another and more globular speci- 

 men measures 17 mm. in height and 19.5 mm. in diameter. This 

 species has been attributed to d'Orbigny, who gave the name Galerites 

 lanieri on plates of fossils of Cuba, but as Cotteau says that the plates 

 were never published, it is evidently a manuscript name and the species 

 should be attributed to Cotteau as above. Hawkins gives an inter- 

 esting study of this species, and selects one of Cotteau's figured speci- 

 mens as the type. This specimen, which was in the Dewalque collec- 

 tion, is now in the British Museum (E. 4570). 



Cretaceous, Cuba, T. A. Conrad collector, 4 specimens, Philadelphia 

 Academy Nat. Sci. No. 1505. There is no detailed locality with the 

 Philadelphia specimens, but Cotteau gives the locality Cienfuegos, 

 Cuba, which in his original publication he considers Eocene. In the 

 Spanish report, however, he refers it to the Cretaceous. He cites 

 material from the collections of Dewalque in Liege, Vidal in Barcelona, 

 Cotteau in Paris, and Comisi6n del Mapa Geol6gico in Madrid. A. 

 Agassiz lists the species as occurring in the Miocene of Guadeloupe, 

 which is probably a mistake. 



