293 



NOTES ON NEW ZEALAND POLYPLACOPHORA, WITH 

 DESCRIPTIONS OF FIVE NEW SPECIES. 



By Heney Sutek. 



Read 12th April, 1907. 



IscHNOCHiTON (s.str.) CONTRACTUS (Recve). 



This species, which is in the Cuming Collection as frona New 

 Zealand, and was placed by me amongst the species doubtfully occurring 

 in the New Zealand seas,' has been again met with. Capt. J. Bollons 

 kindly gave me a specimen which he collected at the Auckland 

 Islands. It is a young example, having a length of 9 mm. only, and 

 most of the valves are broken. The colour is yellowish white, with 

 three longitudinal rows of brown spots. The sculpture consists of the 

 characteristic ziczac wrinkles, which are very delicate, as might be 

 expected in such a young specimen. 



ISCHNOCHITON (s.str.) LUTEOROSEUS, n.Sp. 



Shell very small, elongately oval, minutely granulate, uniformly 

 pink or yellowish, with longitudinal pink bands. Anterior valve with 

 a posterior rounded sinus, finely granulated in quincuncial pattern, 

 as is the surface of all the other valves. Intermediate valves with 



1 



the lateral areas hardly raised, and not well defined ; slightly beaked, 

 and the jugum sharply rounded. Posterior valve with a central 

 mucro, a slight transverse impression below it, the posterior slope 

 straight. Girdle scaly, scales roundish, imbricating, flatly convex, 



Proc. Malac. Soc, vol. ii, p. 200. 



