NO. 3 CASSIDULOID ECHINOIDS — KIER 1 37 



Shape. — Small, lectotype 22 mm. long, low, broad, with width 

 almost equal to length, with greatest width and height posterior to 

 center; posterior margin very slightly pointed, anterior smoothly 

 round. 



Apical system. — Anterior, tetrabasal (text fig. 115), madreporite 

 large, other genital plates small, with left anterior pore eccentric 

 anteriorly. 



Ambulacra. — Petals strongly developed, broad, equal in length, ex- 

 tending two-thirds distance from apical system to margin, interporif- 

 erous zones more than three times width of poriferous zones, petals 

 closing distally ; poriferous zones depressed, pores conjugate. 



Pcriproct. — Small opening, marginal, longitudinal. 



Peristome. — Anterior, opening small, round. 



Flosccllc. — Bourrelets strongly developed, pointed ; phyllodes (text 

 fig. 116) single pored, broad, with six to seven pores in each outer 

 series, two in each inner ; pores widely separated from peristome. 

 Buccal pores minute, on edge of peristome. 



Ornamentation. — Naked zone in median tract of interambulacrum 

 5 on adoral surface. Tubercles larger adorally than adapically. 



Occurrence. — Upper Cretaceous (Senonian) Azinhaga de Pinhal 

 de Laura (Hira), Portugal, 



Location of type specimen. — Servicos Geologicos de Portugal, 

 Lisbon. 



Genus FAUJASIA d'Orbigny 



Faujasia d'Orbigny, 1856, Pal. franc, Cretace, vol. 6. pp. 290, 314. Type species, 

 Py gurus apicalis Desor by subsequent designation, Lambert and Thiery (192 1, 

 p. 273). 



GENERIC DESCRIPTION 



Small to medium, elongate to broad, high or low, blunted anterior 

 margin, pointed posterior, adoral surface flat or depressed ; apical 

 system apparently monobasal, four genital pores, with pores in inter- 

 ambulacra, widely separated from apical system by small interambu- 

 lacral plates ; petals short, broad, equal, closed, with broad tapering 

 interporiferous zones, narrow poriferous zones with conjugate pores, 

 outer pores greatly elongated transversely ; ambulacra! plates beyond 

 petals single pored; periproct inframarginal, small, transverse; peri- 

 stome anterior, small ; bourrelets strongly developed, toothlike, jut- 



