LAMELLIBEANCHIATA. 

 EaMILT — SlPHONAEIIDiE. 



17 



SIPHONARIA. 



126. S. dentiCUlata, Quoy ; Cat. Marine Moll., p. 55. 

 Localities. — Motanau (u). 



Family — Ampxtllaceeid^. 



AMPHIBOLA. 



127. A. avellana, Q-melin ; Cat. Ilarine Moll, p. 58. 

 Localities. — Motanau (u). 



Class — Lamellibranchiata. 



Family — Pholadid^. 

 PHOLADIDEA. 



1. P. tridenS, Gray; Cat. Marine Moll., p. 59. 

 Localities. — Wanganui (u); Shakespeare Cliff. 



Family — Gtlyc iMEEiDiE. 



PANOPiEA. 



2. P. zealandica, Quoy ; Cat. Marine Moll., p. 60. 

 Localities. — Wanganui (u) ; Kanieri. 



3. P. plicata, sp. nov. Oblong, height more than half the 

 length ; inequilateral, with many concentric deeply sulcated plications ; 

 umbones pointed ; anterior end short, rounded, its dorsal margin rather 

 convex ; posterior end produced, rounded, its dorsal margin nearly 

 straight. Height, 1*7 ; length, 2*8 ; thickness, "O, 



Localities. — Eaglan ; Lake "VVakatipu ; Broken Eiver (l) ; Caps 

 Farewell. 



Closely allied to P. sulcata (Etheridge), from Maryborough, 

 Queensland. 



4. P. worthingtoni, sp. nov. Oblong, height less than half 

 the length ; inequilateral, with many concentric deeply sulcated plica- 

 tions ; umbones pointed ; anterior end short, rounded, its dorsal margin 

 convex ; posterior end produced, rather acute, its dorsal margin rather 

 concave. Height, "8 ; length, 18 ; thickness, '5. 



Localities. — Lake Wakatipu ; Broken Eiver (l). 

 Distinguished from the last by its greater length and more nume- 

 rous plications. 



D 



