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Show 1867.] MR. G. F. ANGAS ON AUSTRALIAN MOLLUSCA. 929 Dark brown, elevately radiately striated throughout, and clothed with a long fibrous epidermis, the shafts of which are beset with small prickly spines. Amongst rocks and under stones at low water. Length 2\ inches. This species is found also in South Australia and New Zealand. The interior is iridescent green and purple. 106. MYTILUS DUNKERI. Mytilus dunkeri, Reeve, Conch. Icon. Mytilus, pl. 5. f. 17. 1 Mytilus planulatus, Lam. This species is so like M. galloprovincialis, Lam., that it may be regarded as its southern analogue. Length 2| inches. New South Wales, Port Philip, and Tasmania. Subfam. CRENELLIN^E. 107. C R E N E L L A (MODIOLARIA) STRIGATA. Modiola strigata, Hanley, P. Z. S. 1844, p. 15. A pretty species, of a greenish horn-colour, richly painted with zigzag purplish-brown markings, and radiately striated at the anterior and posterior sides. Lengtb 6 lines. Dredged in sandy mud in Port Jackson. Mr. Reeve, in the ' Conch. Icon.' has erroneously given the description and figure of a totally distinct shell as representing Mr. Hanley's M. strigata ; it is a species of Volsella from the Philippine Islands, for which I would propose the name Volsella reevei. M. concinna, Dunker, is probably a variety of M. strigata. 108. *CRENELLA (MODIOLARIA) BARBATA. Modiolaria barbata, Angas, anted,, p. 911, Pl. XLIV. f. 12. A small oblong ovate species, with the epidermis long, thick, and fibrous posteriorly, having somewhat the aspect of Modiola opifex, Say, from Brazil. From the "Seven-mile" beach, Botany Bay. Length 5 lines. 109. PERNA AUSTRALIS. Modiola australis, Gray, Appendix to King's Voy.; Reeve, Conch. Icon. pl. 5. f. 21. Not unlike M. tulipa, Lam. The young shells are prettily tinted with yellow and crimson. Common on the Australian coasts generally. Length 3 inches. 110. PERNA GLABERRIMA. Volsella glaberrima, Dunker, P. Z. S. 1856, p. 363. Modiola glaberrima, Reeve, Conch. Icon. Modiola, pl. 8. f. 48. A somewhat triangularly elongated, shining, thin, horny shell, banded and lined with bronze-purple and green. This species spins a sort of nidus, iu which it dwells in black mud in Parramatta River. Dredged at 6 fathoms. Length 2 inches. |