98 



low ridges also extend forwards on the wall of the valve 

 from the bases of the laminae, and unite just in front of its 

 centre, and continue as an obsolete ridge to the front margin. 



Dim.— Length, 775 mm. ; width, 5*5 mm. ; depth, 2 

 mm. 



Diagnosis. — M. cumingi, Davidson, is smooth, without 

 external sculpture, and has a fine foramen at the end of the 

 beak. ., 



Locality. — Type, at 150 fathoms, off Beachport, with 



1 other good and 1 of a narrower form ; also, at 40 fathoms, 



2 good, and at 110 fathoms, 1 good and 1 valve; at < 49 

 fathoms, off Gape Jaffa", 1 small. 



Mag'asella vercoi, Blochmami, antea. 



I may add to the locality given by the author. 



Dredged in Backstairs Passage, at 16 to 18 fathoms, 15 

 alive, many dead; at 19 fathoms, a great many alive and 

 dead, probably 200 ; at 20' fathoms and at 22 fathoms, very 

 many ; at 40 fathoms, off Beachport, 2 good and 3 moderate ; 

 at 62 fathoms, off Cape Borda, 2 poor; at 110 fathoms, off 

 Beachport, 3 good and 9 moderate; at 130 fathoms, off Cape 

 Jaffa, 2 poor, 21 poor and rolled ; at 150 fathoms, off Beach- 

 port, 2 good, quite white; and at 200 fathoms, 2 valves, 

 poor. 



Its habitat seems to be just about Backstairs Passage 

 from 15 to 22 fathoms, beyond which it is rare and dead. 



This is the shell which Tate recorded as Megerlia wille- 

 moesi, Davidson, from 22 fathoms, in Encounter Bay (R. 

 H. Pulleine), in Trans. Roy. Soc. of S. Austr., vol. ix., 

 1886, p. 110. 



Magasella jaffaensis, Blochmami, antea. 



I may add to the locality given by the author. 



Dredged, all dead, off Cape Jaffa, at 90 fathoms, 35 

 large and small, and 24 very small; at 130 fathoms, 17 

 moderate size, 2 small ; at 300 fathoms, 16 good, very small, 

 and 6 very poor; at 110 fathoms, off Beachport, 4 good; 

 at 150 fathoms, 8 moderate ; at 200 fathoms, 8 moderate. 

 1 good, and 6 valves. 



Kraussina (Megerlina) lamarckiana, Davidson. 



Kraussia lamarckiana, Davidson, Proc. Roy. Soc, Lond., 

 1852, p. 80, pi. xiv., figs. 22 and 23. Type locality— Sydney . 

 H. and A. Adams, The Genera of Recent Mollusca, vol. ii., p. 

 579, 1858. 



Terebratula (Kraussia) lamarckiana , Davidson; Reeve, 

 Conch. Icon., pi. ix., fig. 34, 1861, 



