NO. 3 CASSIDULOID ECHINOIDS — KIER 201 



Apical system — Anterior, monobasal, ocular plates very small. 



Ambulacra. — Petals well developed, broad, closing slightly distally, 

 petals V, I longer than others; poriferous zones very wide, pores 

 conjugate, outer pore slitlike, inner round; interporiferous zones 

 less than twice width of poriferous zones. 



Periproct. — Marginal, small, longitudinal, pointed adapically. 



Peristome. — Slightly anterior, pentagonal, higher than wide. 



Floscelle. — Bourrelets well developed, peristome vertically sided. 

 Phyllodes (text fig. i66) single pored, slight broadening near peri- 

 stome, pores arranged in two series in each half-ambulacrum: five 

 to seven pores in each outer series, three to four in each inner; 

 sphaeridia in two rows along midline of each ambulacrum; buccal 

 pores present. 



Occurrence. — Upper Cretaceous (Senonian) of Tripoli. 



Location of type specimens. — Istituto Geologico dell* Universita 

 di Palermo. 



Genus KEPHRENIA Fourtau 



Kephrenia Fourtau, 1909. Bull, Inst. £gypt., ser. s, vol. 2, p. 138. Type species 

 by original designation, Kephrenia lorioli Fourtau. 



GENERIC DESCRIPTION 



Medium size, elongate, moderately inflated ; apical system slightly 

 anterior, monobasal, with four genital pores ; petals equal, closed with 

 broad interporiferous, narrow poriferous zones, strongly conjugated 

 pores ; ambulacral plates beyond petals single pored ; periproct mar- 

 ginal, slightly visible adorally, peristome anterior, pentagonal, higher 

 than wide ; bourrelets well developed ; phyllodes widened, single 

 pored, two series of pores in each half -ambulacrum; buccal pores 

 present. 



Figs. 165-170. — 165, Tcnnieria hcnrici Lambert: Phyllode of ambulacrum III 

 of lectotype in Lambert Collection, Sorbonne, Paris, from the Upper Cretaceous 

 (Maestrichtian), from Bekrit, Morocco, X 21. 166, Zuffardia sanfilippoi (Chec- 

 chia-Rispoli) : Phyllode of ambulacrum IV of holotype in Istituto Geologico 

 deir Universita di Palermo, from the Upper Cretaceous (Senonian) of Trip- 

 oli, X 8. 167, Kephrenia lorioli Fourtau : Phyllode of ambulacrum of holotype 

 in the Geological Museum, Cairo, Egypt, from the Lower Eocene, east of Minia, 

 Egypt, X 15- 168, Santeelampas ovifonnis (Conrad) : Phyllode of ambula- 

 crum I of IJSNM 638689, from the Middle Eocene, Santee limestone, at the 

 Santee-Cooper dam, Berkeley County, S. C, X i5- 169, Neocatopygns rotimdus 

 Duncan and Sladen: Phyllode of ambulacrum I, from specimen C3152 in the 

 collections of the University of California, from the Paleocene of India, X i.S. 

 170, Ilarionia beggiatoi (Laube) ; Phyllode of ambulacrum V of Dames' (1878, 

 pi. 5, fig. 2) figured specimen in the Institut und Museum der Humboldt- 

 Universitat zu Berlin, from the Eocene, San Giovanni, Vicentin, X iS- 



