40 SUBANTARCTIC ISLANDS OF NEW ZEALAND. [Mollusca. 



7 mm. Breadth of hyponotum, 2 mm. Anal orifice, 11 mm. behind right tentacle, 

 and 2 mm. above the perinotum. Pulmonary opening, 14 mm. behind the right 

 tentacle. Genital orifice on right side of the right tentacle. 



Jaw (fig. 18) as usual in the genus, the median basal projection sharply 

 produced or rather obsolete. Radula (fig. 19) with very numerous teeth, the central 

 tooth small and slender, with 3 small cusps and a blunt denticle on each ; lateral 

 teeth with about 7 denticles, the 2 innermost largest. Pedal gland long, nearly 

 half the length of the sole, narrow, flat, thin. 



Reproductive organs : The sheath of the male organ is rather long, convolute, 

 narrowed towards the distal end, where the vas deferens enters and the retractor 

 muscle is fixed ; the verge armed with papillae, slender, drawn out to a long sharp 

 point. There is a short free oviduct, with the receptaculum seminis near its proximal 

 end. Albumen - gland large, oval, yellowish. The hermaphrodite gland is large, 

 globular, light brown ; the hermaphrodite duct is not very long and convolute. 



Type in my collection, co-type in the Canterbury Museum. 



Hah. — Snares Islands, type (Capt. F. W. Hutton, Dr. D. Colquhoun) ; Campbell 

 Island (W. K. Chambers). 



Remarks. — Some eight years ago the late Captain Hutton brought specimens 

 from the Snares, and kindly presented some of them to me. Seeing that they were 

 new to science, I named them provisionally in honour of the distinguished discoverer. 

 Subsequently Dr. D. Colquhoun, of Dunedin, found specimens in the same locality. 

 It is interesting to see the same species turning up on Campbell Island, one specimen 

 having been collected during the present scientific expedition. 



Athoracophorus (Amphiconophora) martensi, n. nov, 



Athoracophorus marmoratus (von Martens), Simroth, Nova Acta Leop. Carol. Akad., 

 liv, 1889, p. 71, pi. iv, figs. 3-10 (non A. marmoreus, Hutton, 1879). 



Animal rather large, yellowish-white, black spots being scattered over the notum, 

 the triangular small mantle-area usually margined by black. From the outer angle 

 of the mantle a groove runs down to the anal orifice, which is somewhat nearer the 

 mantle than to the perinotum. The side grooves are shallow, and the surface of the 

 back is without papillae in spirit specimens. There is no hyponotum. 



Length over back from head to tail, 47 mm. ; width of back to perinotum, 

 25 mm. ; anal orifice, 8 mm. behind the right tentacle, and 5 mm. below the pul- 

 monary opening. 



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



One specimen has also been found on Macquarie Island by Dr. D. Colquhoun. 



Athoracophorus (Amphiconophora) verrucosus, Simroth. 



Athoracophorus verrucostis (von Martens), Simroth, Nova Acta Leop. Carol. Akad., 

 liv, 1889, p. 77, pi. iv, figs. 11-14, 



Var. nigricans (v. Mts.), Simroth. 



Animal not very large, rather long and slender, notum black, with well-impressed 

 lateral grooves, which frequently bifurcate, and small tubercles. There is a distinct 



