ADIHTIONS AND EMENDATIONS. 1081 



nearly straight anteriorly, the apex but little advancing behind ; 

 the sutural laminae are fairly broad, the sinus moderately broad. 

 The anterior margin of the artictilamentum of the head valve is 

 descending. The tail valve has the tegmentum much broader than 

 long (12 : 7). with the mucro slightly behind the middle and forming 

 a blunt angle ; articulamentum descending abruptly, the posterior 

 margin slightly sinuated. Girdle broad, with short and thick cal- 

 careous spicules, the bristles of the sutural tufts also short and thick. 



Length, 18 mm. ; breadth, 10-5 mm. 



Type in the Naturhist. Museum, Bremen. 



Hob. Tauranga (Dr. Thilenius). 



Remarks. Thiele states that the species is very distinct, from 

 A. zelandicus, and nearest to A. armatus, Pease, from the Hawaiian 

 Islands. Iredale, however, would consider it the same as A. tristis, 

 Roch., an Australian species. 



Chiton Stangeri, Reeve, 1847. 



Iredale has examined the type- of this species in the British 

 Museum, and found it to be identical with C. canaliculatus, Q. & G., 

 as suggested by Hutton and accepted by Pilsbry. 



Chiton Suteri, Iredale, 1910. Plate 2, fig. 19 ; Plate 4, fig. 13. 



Chiton Suteri, Iredale, P. Mai. 8.. ix, pt. 2, 1'UO. 102. C. Stan-i/eri. Reeve, 

 tintea, p. 40, not of Reeve. 



The diagnosis printed on p. 40 is valid for this new species. 



Type in my collection. 



Hob. Omit that Dr. Stanger collected the type. 



Tonicia cuneata, Suter, 1908. 



Thiele, to whom I sent a piece of the radula, has come to the con- 

 clusion that the species should be classed under Spongiochiton - 

 Loboplax (I.e., 72). S: j e my remarks to the species on p. 43. 



Lorica volvox, Reeve, 1847. 



Thiele (I.e., 88, pi. 9. f. 18-21) gives an amended description, and 

 figures of intermediate valve, scale of girdle, spicule of same, and 

 part of the radula. 



Oriithochiton marmoratus, Wissel, 1904. 



Onithochilon marmuratus, Wissel, Zool. Jahrb. Svst., xx, 1904, 600, f. 67-09; 

 Thiele, "Zoologica," xxii. Heft 56, 1910, 99~, pi. 10, f. 64-67. 



Thiele is quite correct that this species is the same as my C. 

 nodosus. Wissel did neither mention nor figure the peculiar sculp- 

 ture, but Thiele gives a very good figure of it. Wissel's name has 

 priority. 



The type is in the Naturhist. Museum, Bremen. 



