PLATE XXXI. 
Fig. 1, 2. MYTILUS crinatus. 
MYTitus crinatus^ Lam, Syst. vi. partie 1, p. 121 — Ency. Meth. pi. 217, fig- 3, 
Mytilus polymorphus, Turton's Linne, iv. p. 300. — Zool. Journ, i. p. 584. — New as a British species, and ascer- 
tained to inhabit the dock at Portsmouth, by Mr C. Wilcox. 
Fig. 3. AVICULA anglica. 
AvicuLA Anglica, Leach's MSS — Discovered on the Devonshire Coast by Dr Leach — In the British Museum. 
Fig. 4, 5. LIMA sulcata. 
Lima sulcata, Leach's MSS. 
Pecten suborbiculatus, Mont. Test. Brit. Sup. p. 63, pi. 29, fig. 2. 
Fig. 6, 7. LIMA fragilis. 
Lima fragilis, Brown's MSS. 
Pecten fragilis, Mont. Test. Brit. Sup. p. 62. 
Fig. 8, 9. LIMA TENERA. 
Lima tenera, Turtoti in Zool. Journ, ii. p. 362, pi. 13, tig. 2. — This new species was dredged alive in the British 
channel by Dr Turton — In his cabinet. 
Fig. 10, 11. LIMA viTRiNA. 
Lima vitrina, Brorvn's MSS.— One valve only of this new shell was found by me at Ballantrae, Ayrshire. 
It has much the character of the preceding, but differs in having twenty-eight ribs, and in being covered with 
regular concentric striae, and in the anterior slope being less oblique. This shell is exceedingly thin and tran- 
sparent. 
Fig. 19. OSTREA edulis. 
Ostbea edulis, Mont. Test. Brit. p. 151 — Brown in Ency. Brit. vi. p. 419 — Lam. Syst. vi. partie 1, p. 203. 
This specimen, which has a curious elongation of the hinge, was found at Newhaven. — In Lady Jardine's ca- 
binet. 
Fig. 12, 13, 14. CRENELLA elliptica. 
Crbnella elliptica. Brown's MSS. 
Mytilus decussatus, Laskey in Wern. Mem. i. p. 394, pi. 8, fig. 17. — Mont. Test. Brit, Sup, p. 69. 
Fig. 15, 16. GALEOMMA Turtoni. 
Galeomma Turtoni, Turton in Zool. Journ. ii. p. 361, pi. 13, fig. 1.— This new shell was dredged in the English 
channel by Dr Turton during a gale of wind. 
Fig. 17, 18. BINGHAMI paradoxus. 
Binghami paradoxus, Brown's MSS.— This remarkable bivalve was dredged by General Bingham in Leith Roads. 
— In his cabinet. 
