BKACHIOPODA. 
39 
central furrow ; beak recurved, thick, rounded ; foramen mode- 
rate. Lon. and lat. 6, alt. 4 lines. 
Terebratula subcanalis, Munster, in Cambridge Museum. 
Fossil. Oxford Clay. Bavaria. 
81. Terebratula coarctata. B.M. 
Shell somewhat pentagonal, ornamented with radiating spinu- 
lose striae, decussated by numerous lines of growth ; dorsal valve 
cuiT'^ed, with an angular median ridge and more or less distinct 
lateral furrows ; front straight or indented ; ventral valve deep, 
with a prominent beak ; foramen moderate, round ; deltidium 
distinct; loop short, simple. Lon. 12, lat. 11, alt. 8 lines. 
Terebratula coarctata. Park. 1811, Org. Rem. iii. pi. 16. f. 5. 
Sow. 1823, Min. Con. iv. p. 7. t. 312. f. 1-4. 
Bronn, Index, ii. p. 1232. 
D'Orb. Prod. i. p. 316. 
Davidson, Mon. Ool. p. 59. pi. 12. f. 12-15. 
Quenst. Handb. p. 465. t. 37. f. 21. 
Terebratula reticulata. Smith, 1816, Org. Foss. p. 83. pi. 30. f. 10. 
Sow. 1823, Min. Con. t. 312. f. 5-6 (et decussata). 
Deslong. Soc. L. Norm. 
Quenst. Handb. p. 464. t. 37. f- 20. 
Terebratula decussata, Val. in Lam. 1819, An. sans Vert. vi. 
no. 51 ; Enc. Me'th. t. 245. f. 4. 
Dav. Ann. Nat. Hist. June 1850, pi. 14. f. 51. 
Terebratula reticularis, Schloth. Petref. i. p. 269. 
Buch, Mem. Soc. Ge'ol. France, p. 185. pi. 17. f- 7- 
Fossil. Bath Oolite {Bradford Clay). England ; France. 
82. ? Terebratula Richardiana. 
Like T. reticulata, but much naiTower, more elongated, and 
more strongly reticulated. 
Terebratula Richardiana, D’Orb. 1850, Prod. i. p. 377- 
Fossil. Oxford Clay. France. 
83. Terebratula Morierei. 
Shell pentagonal, deeply indented in front ; valves ornamented 
with concentric, imbricated ridges, both deeply fui-rowed in the 
middle ; beak rather short, recurved, laterally keeled ; foramen 
moderate, round ; deltidium distinct. Lon. 9, lat. 8, alt. 6 lines. 
Terebratula Morierei {Deslongchamps, MS.), Davidson, April 
1852, Ann. Nat. Hist. pi. 14. f. 3. 
Fossil. Inferior Oolite. Normandy. 
