BRACHIOPODA. 
83 
95. Waldheimia Davidsoniana. 
Shell suborbicular, with a produced, tapering beak; valves tri- 
lobed, ornamented with simple, radiating ribs, decussated by a 
few marked lines of growth ; dorsal valve transverse, with a raised 
central lobe ; ventral valve with a longitudinal furrow ; hinge- 
line nearly as wide as the shell ; area triangular ; foramen oval, 
small; deltidium elongated, triangular. Lon. 11, lat. 9, alt. 5 
lines. 
Terebrirostra Davidsoniana, RyciAoZf, 1852, Notice sur les genres 
Nautilus, 8fc., p. 10. f. 4-7. 
Fossil. U. Chalk. Ciply, Belgium. 
96. Waldheimia pectinata. B.M. 
Shell oblong, ventricose, truncated posteriorly, ornamented 
with rugose, bifurcating ribs ; margins toothed, not sinuous ; 
dorsal valve convex, with a wide and nearly straight hinge-line, 
furnished inside with a very wide cardinal process, and a short, 
prominent meihan septum ; crura slender, contiguous ; loop 
doubly attached ? ; ventral valve deep, truncated by a very large 
foramen* ; area and deltidium nearly obsolete ; teeth at the angles 
of the hinge. Lon. 16, lat. 19, alt. 9 lines {Morris). 
Anomia pectinata, Linn. 1767, Syst. Nat. iii. p. 1150. 
Anomites costatus, Wahlenberg, 1821, Acta Upsal. viii. p. 62. t. 4. 
f. 12-14. 
Terebratula costata, Nilsson, Petref. Suec. p. 37. t. 3. f. 13. 
Rhynchora costata, Dalman, 1828, Vet. Acad. p. 136. 
Hisinger, Leth. Suec. t. 20. 
Terebratula lyra, (not Sow.), Dalman ; Hisinger ; Bronn ; 
Morris. 
Terebratula pectinata, L. Appendix to Morris’s Catalogue, p. 216. 
Fossil. U. Chalk. Sw'eden. 
97 . Waldheimia lyra. B.M. 
Shell lyre-shaped, straight or slightly curved, striato-costate ; 
beak about half as long as tbe shell, slender, tapering, truncated 
by a small, transversely oval foramen ; deltidium narrow, as long 
as tbe beak, bordered on each side by a narrow flat area ; dorsal 
valve oval, obtuse in front ; ribs rounded, undulating, simple or 
bifurcating, or intercalary. Lon. 27, lat. 1 0, alt. 7 hnes. 
* The umbones of both valves are worn, as if by contact with the 
rock, in all the examples in London cabinets {Woodward). 
