EXPLANATION OP PLATES. 441 



Plate l21. 



FIGURE. PASS. 



1-3. Barocla fragilis, d'Orb. Cretaceous; Gosauthal, . 183 



4. ^ora cretacea, Conrad. Cret. ; New Jersey, . .181 



5. Grammysia ovata, Sandberger. Nassau, Germany, . 154 



6. Fleurophorus costatus, Brown. Permian ; England, . 234 

 7-9. Crassatellina oblonga, Meek. Cret. ; Kansas, . 225 



10. Notomya securiformis, M'Coj^ Carb. ; Europe, . 230 



11-13. Eriph3da umbonata, Gabb. Cret.; California, . 226 

 14, 15. Astarte (Astartella) vera, Hall and Whitfield. 



Carboniferous ; Illinois, ...... 227 



16, 17. Euloxa latisulcata, Conr. Miocene; U, S., . . 229 



18. Goodallia miliaris, Defrance. Eocene ; France, . . 227 



19, 20. Goodalliopsis Orbignyi, Rainc. and Mun. Eocene ; 



Fercourt, 228 



21,22. Grotriana semicostata, Speyer. Ter. ; Germany, . 228 



23. Alveinus minuta, Conrad. Tertiary ; Mississippi, . 228 



24. Lutetia Parisiensis, Deshayes. Eocene ; Paris, . . 229 



25. Micromeris minutissima. Lea. Eocene ; Alabama, . 229 



26. Woodia marginalis, Desh. Sables inferieurs de Mercin, 229 



27. 28. Elathia Arconatii, Issel. Red Sea, . . . 229 

 29,30. Trigonodus Sandbergeri, Alb. Trias; Wlirtemburg, 237 



31. Cai'dinia Listeri, Sowb. Liassic ; England, . , 237 



32. Cypricardinia lamellosa. Hall. L. Heidelburg Group ; 



New York, 192 



33. Opis lunulata, Sowb. Dogger. . . . . .230 



61,62. Anthouia cultriformis, Gabb. Cret.; California, , 224 



Plate 122. 



34. Astarte borealis, var. semisulcata, Leach. (Magnified.) 



Wellington Channel, 226 



35. Astarte (Gonilia) bipartita, Philippi. Mediterranean, 227 



36. Astarte (Rictocyma)mirabilis,Dall. (^ Greatly enlarged.) 



Alaska, 227 



37. Anoplophora lettica, Quenst. Trias; Friedrichshall, 237 



38. Opisoma Geinitziana, Stol. Cret.; India, . . . 230 



39. 40. Pachyrisma grande, Morris and L. Oolitic ; Eng., 207 



41. Megalodon cucullatus, J. Sowb. Dev. ; Eifel, . , 207 



42, 43. Mecynodon carinatus, Goldfuss. Dev. ; Europe, . 23^1 

 44. Astartila intrepida, Dana. Carb. ; New South Wales, 231 

 45,46. Prosocoelus ovalis, Keferstein. Dev.; Germany, . 230 

 47,48. Redonia.Deshayesiana, Rouault. Silurian ; Europe, 231 

 49. Cardita (Thecalia) concamerata, Cheran, Cape of 



Good Hope, 232 



50,51. Palseocardita crenata, Miinster. Upper Trias ; St. 



Cassian, Tyrol, 232 



52-54. Miodon orbicularis, J. Sowb. Oolitic ; England, . 233 



29 



