212 
CONCHIFERA. 
A ST ARTE. 
21. Astarte concinna. — The Neat Astarte, plate 
LXXXYil. fig. 38. 
A. concinna . Soworby, Geo. Tr. 2d Ser. IV. p. 341, pi. 
16, fig. 15. 
Oblong-ovato, rather 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. formosa. 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 
smooth, with an elevated ridge extending from the beak to the 
baso ; three or four remote concentric furrows, which take the 
abruptly angular form of the valves. 
The Coral Rag, Malton, Oxon, and Wiltshire. 
24. Astarte carinata. — 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 Kclloways Rock, South Cave; and the Calcareous 
Grit, Scarborough. 
25. Astarte triangulata. —The Triangular Astarte, pi. 
LXXXVI. fig. 9. 
A. rugatus . Soworby, 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, lligligate. 
26. Astarte aliena. —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 acuto; sides sloping, and nearly equal; surface with 
nearly obsolete transverse furrows. 
The Coral Rag, Malton, Yorkshire. 
27. Astarte l.evis. —The Smooth Astarte, pi. LXXXVII. 
fig. II. 
A. Imvis. Phillips, Geo. York, I. pi. 2, figs. 18, 19. 
Sub-orbicular, convex, a little elongated; beaks rather 
acuto; surface smooth. 
28. Astarte minima.— Least Astarte, pi. LXXXVII. f. 33. 
A. minima. Phillips, Geo. York, I. pi. 9, fig. 33. Gold- 
fuss, pi. 134, fig. 15. 
Sub-orbicular; beaks obtuse, nearly central; sides nearly 
equal; surface with strong concentric ribs. 
The Great Oolite, Bransby ; Inferior Oolite, Blue Wick, 
Rosebury. 
29. Astarte multi-costata.— The Many-Ribbed Astarte, 
pi. LXXXVII. fig. 16. 
Crassina multi-costata . Brown, Worneriau Mem. VIII. 
p. 56, pi. 1, fig. 20. 
Sub-orbicular, somewhat compressed ; boaks prominent, con¬ 
siderably turned to one side ; lunetto lanceolato ; surface with 
many close-sot concentric ribs. 
Pleistocene Marine Formation, Dalmuir. 
30. Astarte Gairensis. —The Gairloch Astarte, pi. 
LXXXVII. fig. 14. 
Crassina ocata. Brown, Edinburgh Jour. Nat. Geo. Sec. 1, 
p. 12 , pi. 1 , fig. 8 , 
Transversely ovato; sub-compressed; beaks small and 
pointed ; lunette lanceolato and deep ; surfaco with numerous 
broad, elevated, concentric ribs, which become nearly obsolete 
as they approach the base of the valves; external margin broad 
and plain. 
Tho Ploistocene Marine Formations, Bute aud Ayrshire. 
31. Astarte Scotica. — The Scottish Astarte, plate 
LXXXVII. figs. 17, 18. 
Crassina Scotica. Brown, Ill. Rec. Couch. Brit. p. 95, pi. 
38, fig. 9. 
Sub-cordiform, sub-comprossod; umbonos nearly central ; 
lunetto somewhat heart-shaped; surface with many parallel, 
transverse ribs, which are narrowed towards the posterior side. 
Tho Pleistocene Marine Formations, Ayr and Baud'. 
32. Astarte ovata. —The Ovate Astarte, pi. LXXXVII. 
fig. 34. 
A. ocata. Phillips, Geo. York, pi. 3, fig. 25. 
Obovate; beaks obtuse; lunette lanceolato and very nar¬ 
row ; surface with nearly obsolete, autiquated, concentric 
wrinkles. 
The Coral Rag, Malton ; Wiltshire and Oxon. 
33. Astarte sulcata. —Tho Furrowed Astarte, plate 
LXXXVII. fig. 41. 
Crassina sulcata. Brown, Ill. Rec. Conch. Brit. p. 96, pi. 
38, fig. 10. 
Sub-orbicular, considerably compressed ; beaks very promi¬ 
nent, and nearly central; luuette lanceolate and shallow; 
surfaco with a series of flat, broad, concentric ribs; internal 
margin finely crenulatod. 
The Pleistocene Formations, Clyde; and the Red Crag, 
Sutton. 
34. Astarte gracilis. —The Slender Astarte. 
A. gracilis. Goldfuss, pi. 134, fig. 4. 
Nearly orbicular; boaks almost central and acute; lunette 
large, lanceolate; surfaco with numerous, very regular, ele¬ 
vated, concentric ribs, which becomo narrower and less defined 
as they approach tho base ; internal margin with strong cronu- 
lations. 
The Coral Crag, Godgrave, Suffolk. 
35. Astarte lenticularis. —Tho Lens-shaped Astarte. 
A. lenticularis. 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. pggrnea. Goldfuss, pi. 135, fig. 5 . 
