Molhisni.] SUBANTARCTIC ISLANDS OF NEW ZEALAND. 41 



liy|)i)ii()tiim. Mantle-area transversely triangular, the renal orifiee in the anterior 

 angle, the respiratory opening in the middle ntvir the median groove, anal orihce 

 in the right outer corner, witliin the area. 



T^ength over back from head to tail, 34 mm. ; width of back to pcM'inotuu), 

 1 1 mm. 



II((b. — Auckland Islands, two specimens (Professor Beidiam). 



\'ar. fasciatus (v. Mts.), Simroth, em. (fuscatus). 



Back of the animal light brown, with three longitudinal rows of black streaks. 

 The renal, respiratory, and anal orifices in the same places as in the other variety. 

 Side grooves but rarely bifurcating. Notum with very numerous papillae, some 

 of them of a slightly larger size. 



One specimen has the verge exserted ; it is cylindrical, with 6 sharp longitudinal 

 ridges, armed with dense minute spines. 



Jaw elasmognathic. Radula with very nunu'rous teeth, having a Itroad reflec- 

 tion, with 7 to 8 denticles, the inner one largest. I was unable to find a central 

 tooth in the radula I prepared. Simroth states that he found the radula exactly 

 like that of A. man)ioratas. but the rake-shaped teeth with a to 7 denticles, instead 

 of 4 to 6. 



Hab. — Auckland Islands, very common (Professor Benham). 



Specimens from cliffs near head of North Arm of Carnley Harbour have larger 

 papillae on the back. 



Fam. ONCHIDIDAE. Philippi. 

 (Jenus OxcHiDELLA, (Jray, 1850. 

 L)Uti'ihntio)i. — Littoral zone of most seas. 



Onchidella campbelli, Filhol, lSS(t. 



OnvliidcJhi cdmphe'li, Filhol, Compt. Rend., xci, 18S(), p. 1()!»4 ; .Miss. I.C., 1885, 

 p. 521. 



Resembling 0. nigriains, Q. and (!.. Init the marginal pores are much more 

 numerous. 



Hah. — Auckland Isliinds ; Campbell Island (Professor Chilton). 



Fam. DENT ALII] )AE, (hay. 

 Genus Dextalium, linne, 1758. 

 Distribution. — All seas, some species living in great depths. 



Dentalium nanum, ilutton, 1S73. 



Den'aliuiii ixtnuni, Hutton, Cat. Tert. Moll. N.Z., 1873, p. 1 ; J'lioc. M., p. 73, 

 pi. viii, tig. 78. 

 II((h. — Ten miles north of Enderl)y Island, in 85 I'athonis (E. R. Waite). 

 Also North and South Islands of New Zealand. 



