208 Proceedings of the Royal Society of Victoria. 



1842. Chitonellus striatus, Reeve. Conch. Syst., vol. ii.,. 



pi. 135, f. 1. 

 1847. Chitonellus striatus, Reeve. Conch. Icon., f. 4a, d. 

 1886. Cryptoplax striatus, Haddon. Chall. Zool., vol. 



XV., Polyplacophora, p. 39, pi. 1, f. 9, and pi. 



3, f. 9.Z-9W. 



1893. Cryptoplax striatus, Pilsbry. Tryon, Man. Conch., 



vol. XV., p. 53, pi. 9, f. 11-15, and pi. 11., f. 

 37-39. 



1894. Cryptoplax striatus, Pilsbry. P. Acad. Nat. Sci. 



Philad., p. 85. 

 1896. Cryptoplax striatus, Sykes. P. Malac. Soc. Lond., 



vol. ii.. No. 2, p. 93. 

 1901. Cryptoplax striatus, Pilsbry. Id., vol. iv., No. 4, 



pp. 152, 153, 155, 157, pi. 15, f. 20-23. 

 Hab.— Port Phillip Heads (J. B. Wilson) ; Port Phillip and 

 Western Port ; very large specimens to be obtained at low tide 

 from the rocks on the back beach, Williamstown. 



Obs. — The morphology of this and allied species is very fully 

 and lucidly dealt with by Dr. Pilsbry in his recent contribution 

 to the Malacological Society of London, and our best thanks are 

 due to him for having cleared up many of our difficulties in such 

 a satisfactory manner. He regards C. gunnii. Reeve, as a distinct 

 species ; it has so frequently been lumped with C. striatus that 

 this change may take some by surprise, but we can readily confirni 

 the points made out, and have no difficulty whatever in separating 

 the two forms. Dr. Pilsbry mentions " that C. striatus occurs as 

 far south as Port Jackson, while C. gunnii replaces it in South. 

 Australian waters ;" he also mentions Mr. Sykes' Victorian 

 record of C. striatus, but because C. gunnii was included in the 

 synonymy, he was naturally in doubt as to which form was meant. 

 We can now definitely extend the range of C. striatus, Lam., to 

 Port Phillip, and we are also in a position to assert that we have 

 C. gunnii. Reeve, i-ather more commonly represented along our 

 shores, while the South Australian representatives, according to 

 Mr. Bednall, are the 0. gunnii type alone. 



Cryptoplax gunnii. Reeve. 



1847. Chitonellus gunnii. Reeve. Conch. Icon., pi. 1, 

 f. 5. 



