Dat. — Mollusea and Brachiopoda. 
Fig. 1. 
Fic. 2. 
Fie. 3. 
Fic. 4. 
Fie. 5. 
Fic. 6. 
Fie. 7. 
Fie. 8. 
Fig. 9. 
Fie. 10. 
Fie. 11. 
Fia. 12. 
PLATE 6. 
Pecten (Pseudamusium) cocosensis Dall, left valve ; alt. 8.7 mm.; p. 405. 
Cardita (Glans) sulcosa Dall, right valve ; lon. 8.5 mm. ; p. 412. 
Pecten (Pseudamusium) cocosensis Dall, right valve ; alt. 8.7 mm.; p. 405. 
Leda (Jupiteria) agapea Dall, dorsal view ; lon. 21.0 mm.; p. 373. 
The same in profile. 
Leda cordyla Dall, dorsal view ; lon. 8.6 mm.; p. 875. 
The same in profile. 
Pecten (Pseudamusium) panamensis Dall, exterior of left valve; lat. 18.0 
mm.; p. 404. 
Pecten (Propeamusium) malpelonium Dall, exterior of left valve ; alt. 18.2 
mm.; p. 405. 
Pecten (Pseudamusium) panamensis Dall, exterior of right valve ; lat. 16.0 
mm.; p. 404. 
Nucula panamina Dall ; lon. 22.0 mm.; p. 868. 
Vesicomya (Callogonia) angulata Dall, interior of right valve; lon.58 mm. ; 
p. 419. 
The drawings for this plate are by the late Dr. J. C. McConnell. 
