panamic-pacific pelecypoda 559 



Explanation of Plate 86 



Figure Page 



1-la. Spondjlus princeps priiieeps Broderip 152 



Holotype, length exclusive of spines 130 mm. Isla la Plata, Ecuador. 

 Cuming Coll. British Museum (Nat. History). 



2. Chama frondosa Broderip 225 



Holotype, Isla la Plata, Ecuador. Cuming Coll. British Museum 

 (Nat. History). 



3-3a. Chama echinata Broderip 224 



Fig. 3, height 24.1 mm. Paratype; Fig. 3a, height 38.2 mm. Holo- 

 type. Puerto Portrero, Central America. Cuming Coll. British 

 Museum (Nat. History). 



4. Spondylus princeps leucacantlms Broderip 152 



Holotype, width of shell exclusive of spines 74.6 mm. Isla la Plata, 

 Ecuador. Cuming Coll. British Museum (Nat. History). 



5. Pseudochama jaiius (Reeve) 224 



Holotype, length 39.9 mm. Galapagos Islands. British Museum (Nat. 

 History). 



6. Area (Area) pacifica Sowerby 76 



Length 101 mm. height 55 mm., diameter 50.3 mm. Holotype, 

 British Museum (Nat. History). 



7. Papyridea soleniformis aspersa (Sowerby) 249 



Specimen from the type lot. Length 45.5 mm., height 21.8 mm., 

 diameter 27.4 mm. Cuming Coll. British Museum (Nat. History). 



8-8b. Area (Area) nmbonata Sowerby 77 



Specimens from type lot. Length 45.5 mm., height 21.8 mm., 

 diameter 27.4 mm. Cuming Coll. British Museum (Nat. History). 



