NO. 2162. FLINT RIVER OLIGOCENE FOSSILS— BALL. 523 



EXPLANATION OF PLATES. 



Plate 83. 



Fig. 1. Lima Jialensis Dall, exterior of right valve; height, 52 mm.; p. 493. 



2. Pecten suwanneensis Dall, cast of left valve; height, 28 mm.; p. 492. 



3. The same, cast of interior of left valve; height, 20 mm.; p. 492. 



4. The same, exterior of right valve; height, 25 mm.; p. 492. 



5. Spondylus Jiliaris Dall, young valve; height, 20 mm.; p. 493. 



6. The same, showingoutlineandsculptureof adult upper valve; height, 65 mm.; 



p. 493. 



7. Lima halensis Dall, from cast taken from a mold of the hinge Line; breadth 



16 mm.; p. 493. 



8. The same, exterior of left valve; height, 52 mm.; p. 493. 



Plate 84. 



Fig. 1. Glycymeris coohei Dall, exterior of young valve with entire ribs; height, 14 

 mm.; p. 490. 



2. The same, interior of valve, showing hinge; height, 10 mm.; p. 490. 



3. The same, exterior of larger valve with bifujfcated ribs; height, 13 mm. ; p. 490. 



4. The same, exterior of another valve; height, 11 mm,; p. 490. 



5. Chione bainbridgensis Dall, defective adult right valve ; length, 35 mm. ; p. 499. 



6. The same, exterior of young left valve; length, 18 mm.; p. 499, 



7. Phacoides perovatus Dall, cast of interior of right valve ; height, 48 mm. ; p. 496. 



8. The same, cast of another valve; height, 53 mm.; p. 496. 



9. Pecten alpha Dall, mold of exterior of left valve; breadth, 23 mm.; p. 492. 

 10. Psammobia (Gobraeus) cerasin Dall, right valve; height, 25 mm.; p. 501. 



Plate 85. 



Fig. 1. Arcoperna infiata Dall, right valve; length, 18.5 mm.; p. 494. 



2. Pitaria (Lamelliconcha) silicifluvia Dall, exterior of right valve, somewhat 



encrusted; length, 19 mm.; p. 500. 



3. Interior of the same valve, showing hinge; p. 500. 



4. Crassatellites paramesus Dall, exterior of young left valve, showing early 



sculpture; height, 28 mm.; p. 495. 



5. The same, cast of an adult left valve; height, 33 mm.; p. 495. 



6. Dentalium ladinum Dall; length, 36 mm.; p. 622. 



7. Crassatellites paramesus Dall, interior of right valve, showing hinge; height, 



28 mm.; p. 495. 



8. Exterior of the same valve; p. 495. 



9. Ampullina solidula Dall; height, 40 mm.; p. 518. 



10. Cymatium cecilianum Dall; height, 25 mm.; p. 507. 



11. Ampullina streptostoma Heilprin; height, 40 mm.; p. 519. 



Plate 86. 



Fig. 1. Conus vaughani Dall, from a cast; length of entire figure, 51 mm.; p. 502. 



2. Conus coohei Dall, from cast; length of shell, 38 mm.; p. 502. 



3. Lyria mansfieldi Dall; length, 47 mm.; p. 504. 



4. Cassis sulcifera Sowerby, fragment showing the spii-e; width, 32 mm. ; p. 508. 



5. Liotiaf persculpturata Dall, back of specimen showing sculpture; height, 



6.5 mm.; p. 521. 



6. Diastema georgiana Dall; length, 6 mm.; p. 510. 



7. Cerithiopsis diagona Dall; length, 10 mm.; p. 516. 



8. Murex rufirupicolus Dall. internal cast; length, 42 nun.; p. 506. 



