SUTEE : ON NEW ZEALAND POLTPLACOPHORA. 295 



Hah. — One specimen amongst material dredged by Mr. R. Henry 

 in 30 fathoms, Dusky Sound. 



Type in my collection. With regard to sculpture of the lateral 

 areas this species stands between C. empleurus and C. illuminatus ; the 



former, however, has 4, the latter only 1 slit on the intermediate 

 valves. In Journ. Malac, xii, p. 65, I stated that the median valves 

 of C. empleurus had 3 slits, but 4 is the correct number. 



Chiton Torri, n.sp. 



Shell small, elongate, smooth, dark brown. Anterior valve with 

 eleven indistinct riblets, obsolete in one specimen, crossed by fine 

 growth - lines, the whole surface minutely wrinkled. Of the 

 intermediate valves the first is twice as long as the others, all of 

 them are broadly rounded, smooth, and beaked, the central areas 

 with minute transverse zigzag wrinkles; jugum smooth; lateral areas 

 slightly raised, with concentric ridges, very distinct near the margins, 

 but gradually disappearing towards the centre, the whole minutely 

 wrinkled. Posterior valve with the mucro central, low, posterior 

 slope strongly convex, a few concentric ridges near the margin, 

 surface wrinkled like the other valves. Girdle with small, rounded, 

 smooth, imbricating scales. Colour dark brown, somewhat lighter on 

 the central and lateral areas ; girdle darker brown, nearly black. 

 Interior light brown, sinus microscopically denticulate, sutural laminae 

 moderately high, and broadly rounded. Anterior valve with 1 1 slits, 

 teeth sharp and pectinate, irregular in size. Intermediate valves with 

 1 slit on each side. Posterior valve with a low insertion plate, 

 having 12 slits, the teeth thick and blunt, with one or two grooves on 

 the outside. Length 9, breadth 4-5 mm. ; divergence 100°. 



JTai.— Bluff, South Island (Dr. Torr). 



