98 



PHOCEEDINGS OF TIIE GEOLOGICAL SOCIETY. 



[Jan. 10, 



to the north of the habitat or range of its present representative. 

 Moulinsia, Ag., which also has some affinity, is now a denizen of 

 the seas around Martinique ; this and the extinct genus Rtmia (Ag.) 

 from the Tertiary beds of Bordeaux and Palermo (noticed under the 

 affinities) seem to be, in some respects, allied genera. 



This genus is established to receive Seutelloid forms with lobed 

 instead of digitate expansions upon the posterior margin, and other- 

 wise differing from known Scutellce. 



Rotuloidea Jimhriata, Etheridge. 

 1 



Fig. 1. Dorsal aspect, showing the twelve fimbriations, subpetaloid ambulacra 

 and central madreporic tubercle. 



2. Ventral aspect, showing mouth, position of vent, and ramifying furrows. 



3. Posterior border and height of test. 



4. Apical disk, witli the Madreporic tubercle, the foui- genital pores, and 



place of the five oculars. 



Class ECHINODERMATA. 



Order ECHINIDA. 



Group Chjpeasteroidea. 



Earn. SCTJTELLID^. 



Genus Eotuloidea (Etheridge, 1872). 

 Gen. char. — General form depi-essed, broadly ovate, longer than 



