CONCHIFERA DIMYARIA. 
85 
SPECIES. REFERENCES. STRATA. LOCALiTlES. 
rudis, Sow. M. C. t. 447 Gr.O. Ancliff, Wilts. 
sulcata, Sow. G. Tr. 2 ser. 3. p. 119 Mag.L. Hurableton. 
Trapezium, Sow. G. Tr. 2 ser. 5. t. 53. f. 24 ; Dev. Marwood. 
Phil. P. F. t. 19. f. 70. 
triangularis, Phil. G. Y. 1. t. 3. f. 31 Cor.R, Malton. 
unilateralis. Sow. G. Tr. 2 ser. 5. t. 53. f. 23 ; Dev. Marwood. 
Phil. P. F. t. 19. f. 69. 
CYCLAS, Lam. 
amnica, Turt. Biv. 250. t. 11. f. 25 ; C. /la- Pl.F. Grays; Erith ; Crop- 
lustris, Drap. t. 10. f. 15 ; Pi- thorn ; Clacton ; Stut- 
Jenyns, Mon. 21. t.21. ton; Feversham. 
f. 2 ; Turt. Man. f. 5. 
angulata, ...Sow. G. Tr. 2 ser. 4. t. 21. f. 12... Weald. Sussex ; I. of Purbeck ; 
S. Wilts. 
cornea, Lara. 5. p. 558 ; Turt. Man. f. 2; Pl.F. Clacton; Cropthorn ; 
Tdlina, Linn. 1.1120. Grays; Stutton. 
elongata, ...Sow. G. Tr. 2 ser. 4. t. 21 . f. 9 Weald. Sussex. 
Purb. Whitchurch ; Telfont. 
? gibbosa, ...Sow. G. Tr. 2 ser. 4. t. 21. f. 11 ; Weald. Sussex. 
var. of C. media. Sow. ? Purb. S. Wiltshire. 
Henslowiana, Jenyns,Mon. 20. t. 21. Pl.F. Clacton; Stutton; Crop- 
• f. 6, 7 ; Turt. f. 6. thorn ; Grays. 
major, Sow. G. Tr. 2 ser. 4.t. 21. f. 13... Weald. In many localities. 
? media, Sow. M. C. t. 527. L 2; G. Tr. Weald, characteristic of; Kent; 
2 ser. 4. t. 21. f. 9, 10. Surrey ; Sussex. 
? membranacea. Sow. M. C. t. 527. f. 3 Weald. Sussex; Dorset; S. Wilts. 
parva, Sow. G. Tr. 2 ser. 4. t. 21. f. 7-.. Purb. Whitchurch; Quainton ; 
Chicksgrove ; S. Wilts. 
pusilla, Turt. Biv. 251. t. 11. f. 16, 17; Pl.F. Harwich; Copford; 
Pisidium, Jenyns, Mon. 14. Grays; Clacton; Stut- 
t. 20. f. 4, 6 ; Turt. M. f. 7. ton ; Cropthorn. 
rivicola, Lam.; Turt. Man. f. 1; C. cor- Pl.F. Feversham; Southend. 
nea, Drap. 128. t. 10. f. 1-3. 
subquadrata, Sow. G. Tr. 2 ser. 4. t. 21. f. 8... Weald. Hastings ; St. Leonard’s. 
CYPRICARDIA, Lam. 
amygdalina, Sow. Sil. Syst. t. 5. f. 2 U.Lud.In many localities. 
cymbseformis. Sow. Sil. Syst. t. 3.f. 10a ; Card. U.Lud.Felindre ; Ludlow ; East 
carpomorphum. His. Let. Suec. Gothland, 
t. 19. f. 5. 
deltoidea, ...Phil. P. F. p. 37. t. 17. f. 59 ; Afm- Dev. Petherwin, Curb. S. 
phidesma, Portl.G.R.t. 36. f. 7 > C.L. Tyrone; Clogher. 
glabrata, ...Phil. G. Y. 2. t. 5. f, 25 C.L. Bolland. 
impressa, ...Sow. Sil. Syst. t. 5.f. 3 ; Phil. P. Dev. Baggy Point. 
F. p. 36. t. 17 . f. 58. U.Lud.Delbury. 
pectinifera, Venus, Sow. M. C. t. 422. f. 4 L.CL. Barton, Hants. 
retusa, Sow. Sil. Syst. t. 5. f. 5 U.Lud.Delbury. 
