168 "PEor. p. M. Duncan's eeyisiok or the 



It does not appear that the interesting species first of all 

 noticed by d'Orbigny, and redescribedby M. Cotteau, Desc. Ech. 

 foss. de Cuba, 1881, in Ann. de la Soc. geol. de Belg. vol. ix. Mem. 

 p. 11, pi. i., can enter JEcTiinoconus. I have therefore defined a 

 genus Lanieria for the so-called EcJiinocomis Lanieri. 



Genus Lanieeia, gen. nov. 



Test moderate, high, subglobular, slightly elliptical in marginal 

 outline, broader than high, narrower and slightly tumid actinally. 



Apical system central, projecting, pentagonal, with five basals 

 largely perforated by genital ducts ; madreporite in the right 

 anterior, and also occupying the centre of the system and sepa- 

 rating basals 1 and 4 and reaching basal 5. Eadial plates entering 

 the periproctal ring. 



Ambulacra straight, narrow, flush, apetaloid; pairs of pores 

 directly superimposed except actinally, where there is an arrange- 

 ment of triplets ia arcs. Tubercles of the interporiferous areas 

 small, perforate and crenulate, larger near the poriferous zone, 

 in two or more vertical rows. 



Interradia large, with several vertical rows of primary tubercles, 

 two of which reach the apex, scrobiculate and with granule® 

 between. 



Peristome central, circular, slightly notched. Periproct rather 

 large, elliptical, close to the peristome and reaching close to the 

 posterior edge of the test. 



Fossil. Cretaceous or Eocene: America (Cuba). 



This genus admits Galerites-=Ec]iinoconu& Lanieri, d'Orb. 



II . Sub family EcHinone in ce. 

 Tumid, low tests, more or less pulvinate actinally ; peristome 

 central or subcentral and oblique. 



Genus Eehinoneus, 



Amilypygus, 



Caratomus. 



Pygaulus: 



Pyrina. 

 Subgciius Ntideopyyus. 

 Genus Jtwrfhopyyus, 



