CLASS I 



ECHINOIDEA 



287 



where slightly petaloid, widely open distally : pore-pairs few and increasingly 



far apart. Peristome central, pentagonal, with small 



jaws. Periproct between the peristome and posterior 



edse of the test. Cretaceous to Recent. 



Subgenus ScuteUina Ag. Periproct small, marginal or more 

 or less supra- or infra-marginal. Tertiary. Pn,_ 403. 



Sismondia Desor. Test sub -pentagonal or ovoid, Echinocyamus piacentus 



1 ■ r, 1 1 • Ti J 1 -J 1. £ (Goldf.) ( = E. siculus Ag.). 



depressed, niflated at the margni. retaloid parts 01 piiocene; Siciiy. i/j. 

 the Jinh usually long, more or less open ; pore-pairs 

 not continued actinally. Tubercles minute. Eocene 

 and Miocene. 



Fihularia Lam. (Fig. 404). Test thin, ovoid, tumid 

 dorsally and at the side. Jmh short ; pore-pairs very 

 few, continued wide apart to the margin, non-con- 

 jugated. Peristome and periproct small, sunken, close 

 together. Upper Ci'etaceous and Recent. 



Euna Ag. Tei'tiary ; Europe. 



Family 3. Scuteliidae Agassiz. 



Test very flat, with entire or incised margin ; lunules or slits in the areas or 

 not. Jmhulacral furrows bifurcating and branching. Peristome flush ; jaws flat. 



Fig. 404. 



Fihulariasuh(jldbosa{Go\Ai.). 

 Upper Cretaceous ; Maast- 

 richt, Belgium. 1/1. 



Fio. 405. 

 Scutella suhrotwiidata Lam. jVIioceiie ; Bordeaux. .1, B, Ventral and doi'sal aspects ; C, Section, i/i- 



teeth superior. Badiating partitions between the floors internally. Tertiary and 

 Recent. 



Scutella Lam. (Fig. 405). Test circular or sub-circular in outline, some- 

 times undulating or notched, broadest behind. Petaloid parts of the Amb 



