EXPLANATION OF PLATE XXXL 



Figure 233.— Creiielia glandula, (p. 695.) 

 234.— Mytilus edulis, (p. 692.) 

 235. — Mocliolaria corrugata, (p. 694.) 

 236. — Modiolaria nigra, (j). 694.) 

 237.— Modiola modiolus, (p. 693.) 

 238.— Modiola plicatula, (p. 693.) 



(All the flpiurrs are of natural size, ami from Eiiinev's Goiikl, dvaTrn by E. S. Morse.) 



