654 MR, G. F. ANGAS ON THE MARINE [Nov. 14, 
Fam. AvIcuLIDz. 
74. AVICULA SCALPTA. 
Avicula scalpta, Reeve, Conch. Icon. pl. 11. f. 38. 
Station. Attached to bunches of Zoophytes and Algz. 
Hab. St. Vincent’s Gulf; Guichen Bay ; Tasmania. 
75. AVICULA PULCHELLA. 
Avicula pulchella, Reeve, Conch. Icon. pl. 8. f. 22. 
Station. Same as preceding. 
Hab. St. Vincent’s Gulf; Port Phillip. 
76. AVICULA RUTILA. 
Avicula rutila, Reeve, Conch. Icon. pl. 8. f. 19. 
Station. Same as preceding. 
Hab. St. Vincent’s Gulf. 
77. AVICULA PUNCTULATA. 
Avicula punctulata, Reeve, Conch. Icon. pl. 12. f. 42. 
Station. Same as preceding. 
Hab. Port Lincoln and St. Vincent’s Gulf. 
All the foregoing are delicate, subtransparent species, varying con- 
siderably in colour and markings. 
78. MARGARITIFERA MARGARITIFERA. 
Mytilus margaritiferus, Linn. Syst. Nat. p. 1153. 
Margarita sinensis, Leach. 
Avicula meleagrina, De Blainv. 
A. radiata, Leach. 
Station. Deep water. 
Hab. Spencer’s Gulf; Coffin’s Bay ; and the Great Australian 
Bight. 
This is the “ Pearl Oyster,” a species generally distributed through- 
out the Indo-Pacific marine mollusean province. 
79. MALLEUS ALBUS. 
Malleus albus, Lam. Anim. sans Vert. vii. p. 91. 
Ostrea malleus-albus, Chemn. 
Var. Malleus normalis, Lam. 
Station. On oyster-banks, buried in the sand, in from 2 to 5 
fathoms water. 
Hab. Port Lincoln. 
This species occurs also at Moreton Bay and the Philippines. 
80. MALLEUS REGULUS. 
Ostrea regula, Forsk. Desc. Anim. p. 124. 
O. ocrea, Martini. 
Vexillum moluccanum, Chemn. 
Ostrea vulsella, Gmel. 
