212 



CONCHIFERA. 



ASTARTE. 



21. AsTARTE coNCiNNA. — The Neat Astarte, plate 

 LXXXVII. fig. 38. 



A. conc'mna. Soworby, Geo. Tr. 2J Ser. IV. p. 3-il, pi. 

 16. fig. 15. 



Oblong-ovate, ratber convex ; beaks oblique ; a concave 

 space on the posterior side near the base ; lunette elongated 

 and deeply sunk ; surface with numerous concentric furrows. 



The Greensand, Blackdown. 



22. Astarte Formosa. — The Handsome Astarte, pi. 

 LXXXVII. figs. 23, 24. 



A. formos%. Sowerby, Geo. Tr. 2d Ser. IV. p. 341, pi. 16, 

 fig. 16. _ 



Sub-triangular, rather compressed, with the edges thicken- 

 ed ; beaks obtuse ; lunette elongated and concave ; surface 

 with about ten prominent transverse reflected ribs. 



The Greensand, Blackdown. 



23. Astarte Extensa. — The Extended Astarte, pi. 

 LXXXVI. fig. 13. 



A. extensa. Phillips, Geo. York, I. pi. 3, fig. 21. 



Sub-trigonal, elongated obliquely ; beaks obtuse ; surface 

 smooih, with an elevated ridge extending from the beak to the 

 base ; three or four remote concentric furrows, which take the 

 abruptly angular form of the valves. 



The Coral Rag, Maltou, Oxon, and Wiltshire. 



24. Astarte cahinata. — The Keeled Astarte, pi. 

 LXXXVI. fig. 26. 



A. carinata. Phillips, Geo. York, I. pi. 5, fig. 3. 



Sub-triangular, sides rather straight ; a pretty prominent 

 ridge emanates from the beak, and terminates on the margin ; 

 surface with broad concentric ribs and narrow furrows. 



The KeUoways Rock, South Cave ; and the Calcareous 

 Grit, Scarborough. 



25. Astarte triaxgulata. — The Triangular Astarte, pi. 

 LXXXVI. fig. 9. 



A. rtigatus. Sowerby, IV. p. 13, pi. 316, fig. 3. 



Triangular ; beaks much produced, with a concave space 

 under them ; posterior side very slightly curved ; rounded on 

 the lower portion of the sides ; basal line straight ; surface 

 with rude transverse, antiquated ribs and furrows. 



The London Clay, Highgate. 



26. Astarte alien a. — The Alienated Astarte, pi. 

 LXXXVII. fig. 39. 



A. aliena. Phillips, Geo. York, I. pi. 3, fig. 22. 



Sub-orbicular, a little elongated ; beaks nearly central and 

 rather acute ; sides sloping, and nearly equal ; surface with 

 nearly obsolete transverse furrows. 



The Coral Rag, Mai ton, Yorkshire. 



27. Astarte l.evis.— The Smooth Astarte, pi. LXXXVII. 

 fig. 11. 



A. laipis. Phillips, Geo. York, I. pi. 2, figs. 18, 19. 

 Sub-orbicular, convex, a little elongated ; beaks rather 

 acute ; surface smooth. 



28. Astarte jiindia.— Least Astarte, pi. LXXXVII. f. 33. 

 A. minima. Phillips, Geo. York, I. pi. 9, fig. 33. Gold- 

 fuss pl- 134, fig. 15. 



Sub-orbicular ; beaks obtuse, nearly central ; sides nearly 

 equal ; surface with strong concentric ribs. 



The Great Oolite, Bransby ; Inferior Oolite, Blue AVick, 

 Rosebury. 



29. Astarte multi-costata. — The Many-Ribbed Astarte, 

 pl. LXXXVII. fig. 16. 



Crassina multi-costata. Brown, "Wernerian Mem, VIII. 

 p. 56, pl. 1, fig. 20. 



Sub-orbicular, somewhat compressed ; beaks prominent, con- 

 siderably turned to oue side ; lunette lanceolate ; surface with 

 many close-set concentric ribs. 



Pleistocene Marine Formation, Dalmuir. 



30. Astarte Gairensis. — The Gairloch Astarte, pl. 

 LXXXVII. fig. 14. 



Crassina ovata. Brown, Edinburgh Jour. Nat, Geo. Sec. 1 , 

 p. 12, pl. 1, fig. 8, 



Transversely ovate ; sub-compressed ; beaks small and 

 pointed ; lunette lanceolate and deep ; surface with numerous 

 broad, elevated, concentric ribs, which become nearly obsolete 

 as they approach the base of the valves j external margin broad 

 and plain. 



The Pleistocene Marine Formations, Bute and Ayrshire. 



31. Astarte Scotica. — The Scottish Astarte, plate 

 LXXXVII. figs. 17, 18. 



Crassina Scotica. Brown, 111. Rec. Conch. Brit. p. 95, pi. 

 38, fig. 9. 



Sub-cordiform, sub-compressed ; umbones nearly central ; 

 lunette somewhat he.art-shaped ; surface with many parallel, 

 transverse ribs, which are narrowed towards the posterior side. 



The Pleistocene Marine Formations, Ayr and Banfl". 



32. Astarte ovata. — The Ovate Astarte, pl. LXXXVII. 

 fig. 34. 



A. ovata. Phillips, Geo. York, pl. 3, fig. 25. 



Obovate ; beaks obtuse ; lunette lanceolate and very nar- 

 row ; surface with nearly obsolete, antiquated, concentric 

 wrinkles. 



The Coral Rag, Mai ton ; Wiltshire and Oxon. 



33. Astarte sulcata. — The Furrowed Astarte, plate 

 LXXXVII. fig. 41. 



Crassina sidcata. Brown, III. Rec, Conch. Brit. p. 96, pl. 

 38, fig. 10. 



Sub-orbicular, considerably compressed ; beaks very promi- 

 nent, and nearly central ; lunette lanceolate and shallow ; 

 surface with a series of flat, broad, concentric ribs ; internal 

 margin finely crenulated. 



The Pleistocene Formations, Clyde ; and the Red Crag, 

 Sutton. 



34. Astarte gracilis. — The Slender Astarte. 

 A. gracilis. Goldfuss, pi. 134, fig. 4. 



Nearly orbicular ; beaks almost central and acute; lunette 

 large, lanceolate ; surface with numerous, very regular, ele- 

 vated, concentric ribs, which become narrov/er and less defined 

 as they approach the base ; internal margin with strong crenu- 

 lations. 



The Coral Crag, Gedgrave, SuflTolk. 



35. Astarte lexticularis. — The Lens-shaped Astarte. 

 A. Icnticularis. Portlock, Geo. Rep. p. 442. 

 Transversely sub-cylindrical ; anterior side defined by a 



ridge, the extremity contracted and pointed ; posterior side 

 much rounded ; beaks approximate ; surface radiated. 

 The Chalk, Tamlaght, Ireland. 



36. Astarte pygm.ea. — The Pigmy Astarte. 

 A. pygmea. Goldfuss, pl. 135, fig. 5. 



