166 BULLETIN 90, UNITED STATES NATIONAL MUSEUM. 



Fig. 6. CrassatelUtcs deformis Heilprin, Ion. 61 mm. luterior of left valve, 

 p. 131. 



7. The same, exterior of same valve. 



8. Cyrena pompholyx Dall, from in front, p. 134. 



Plate 23. 



P^iG. 1. TeUina (Merisca) haUdmia Dall, interior of left valve. Ion. 37 mm., 

 p. 152. 



2. Pcctcn chipolanus Dall, left valve, lat. 25.5 mm., p. 124. 



3. TeUina (Merisca) haUdona Dall, exterior of left valve, Ion. 37 mm., 



p. 152. 



4. Anomalocardia ftoridana Coni-ad, Ion. 38 mm., p. 150. 



5. The same, from above. 



6. Anomia microgramniata Dall, interior of upper valve, showing scars ; 



Ion. 22 mm., p. 126. 



7. Semele siUcata Dall, Ion. 23 mm., p. 154. 



8. Leda flexuosa Heilprin, from above. Ion. 14.25 mm., p. 117. 



10. The same in profile. 



9. Phacoides domingcnsis Dall, Ion. 22 mm., p. 137. 



11. CoralUophaga elegantula Dall, Ion. 19 mm., p. 131. 



13. The same, from above. 



12. Phacoides wacissanus Dall, Ion. 16 mm., p. 137. 



14. Myrtaea veriniculata Dall, Ion. 7.5 mm., p. 136. 



Plate 24. 



Fid. 1. Chatna iampaensis Dall, upper valve, lat. 20 mm., p. 135. 



2. Macrocallista acuminata Dall, left valve. Ion. 28 mm., p. 146. ( See also 



pi. 20, figs. 8, 9, 10.) 



3. Phacoides {Cavilucina) recu'rrcns Dall, Ion. 5.7 mm., p. 138, 



4. Lithophaga nuda Dall, cast of burrow,. Ion. 50 mm., p. 129. (See also 



pi. 26, fig. 7.) 



5. Phacoides (Lucinisca) calhounensis Dall, ion. 10 mm., p. 139. 



6. Modiolus (Greganella) minimus Dall, from above. Ion. 7 mm., p. 128. 



7. TeUina (Macaliopsis) merula Dall, Ion. 16 mm., p. 152. 



8. Diplodonta alta Dall, alt. 27 mm., p. 140. 



9. Macoma irma Dall, Ion. 28 mm., p. 153. 



10. Dosima chipolana Dall, lat, 40 mm., p. 145. 



11. Modiolus silicatus Dall, Ion. 22.5 mm., p. 127. 



12. Vhione spada Dall, Ion, 29 mm., p, 149. 



Plate 25. 



Fig. 1, Aniigona (Melosia) glyptoconcha Dall, Ion. 26.5 mm., p. 148. 



2. Area {Scapharca) latidcntata Dall, Ion. IS mm., p. 121. 



3. Chione (Lirophora) halUsta Dall, Ion. 24 mm., p. 149. 



4. Aniigona (Artena) shepardi Dall, Ion. 21 mm., p. 148. 



5. Chione (Chamelwa) nuciformis Heilprin, Ion. 24 mm,, p, 149. 



6. Chione (Chamelaea) rhodia Dall, Ion. 18 mm., p. 149. 



7. Callocardia (Agriopoma) sinccra Dall, Ion. 20.5 mm., p. 146. 



8. Tngoniocardia alicula Dall (valve somewhat worn), alt, 12 mm,, p. 144, 



9. Chuma chipolana Dall, upper valve. Ion, 27 mm., p. 135. 



10. Cardium (Cerastodcrma) phlyctwna Dall, alt. 27 mm., p. 144. 



11. Chatna chipolana Dall, lower valve. Ion, 27 mm., p. 135. 



12. Cardium ( Trachycardiam) dclphicum Dall, alt, 34 mm., p. 142, 



