THE YORKSHIRE COAST. 



169 



Lamellifera. Astrasa, 1 favosioi'des,* 2, insequalis,* 3, micrastron,* 4, arachnoides, 



5, tubulifera,* and 6, coralline oolite ; 7> inferior oolite. 

 Meandrina, coralline oolite. 

 Tubulifera. Tubipora, or Eunomia ? Bath oolite. 



REMAINS OF RADIARIA. 



Stellerida. Ophiura Milleri,* marlstone. 



Crinoidea. Pentacrinus, 1, caput Medusae, lias, fyc. ; 2, Briareus, lias. 



Unknown genus, two species, coralline oolite and calcareous grit. 

 Apiocrinus ellipticus, chalk. 

 Marsupites ornatus, chalk. 



Echinida. Cidaris, 1, papillata, chalk ; 2, florigemma,* 3, intermedia, 4, moni- 



lipora,* coralline oolite ; 5, vagans,* calcareous grit, cornbrash, 



Sfc. ; and other species in Speeton clay, Bath oolite, inferior 



oolite, and marlstone. 



Echinus, 1, germinans,* calcareous grit and Bath oolite ; 2, Kcenigi,-f 



(Park. Org. Rem. III. PL I. fig. 10,) chalk. 



Clypeus, 1, sinuatus, 2, etnarginatus,* 3, semisulcatus,* 4, dimidia- 

 tus,* coralline oolite; 5, cluhicularis, coralline oolite, cornbrash, 

 3fc. ; 6, orbicularis,* cornbrash. 



Galerites, 1, albogalerus, 2, subrotundus, chalk ; 3, depressus, coral- 

 line oolite, calcareous grit, and cornbrash. 

 Clypeaster pentagonalis,* calcareous grit. 

 Spatangus, 1, cor anguinum, 2, planus, 3, hemisphericus,* chalk ; 



4, ovalis, coralline oolite, calcareous grit, and Kelloways rock ; 



5, argillaceus,* Speeton clay. 



Ananchytes, 1, ovatus, 2, hemisphericus, 3, intumescens,* chalk. 



REMAINS OF ACEPHALOUS OR BIVALVE MOLLUSCA. 



Division 1, with lateral muscles for closing the valves. 

 Sub-division 1, mantle partially closed behind. 



Pholadaria' Pholas, 1, recondita,* coralline oolite; 2, constricta,* Speeton clay. 



Gastrochaena tortuosa, inferior oolite. 

 Myariae. Mya, 1, depressa, 2, phaseolina,* Speeton clay ; 3, literata, coralline 



oolite, calcareous grit, fyc. ; 4, calceiformis,* Kelloways rock, inferior 



oolite, #c. ; 5, 6, Kelloways rock and Oxford clay ; 7> dilata, 



8, aequata, inferior oolite. 



