NEW LAND SHELLS — HEDLEY. 153 



Dendrotrochus mentum, sj). nov. 



(PL xxviii., figs. 12, 13). 



By colour, texture and general shape this species might be taken 

 for a diminutive form of the well known D. helicinoides, Hombron 

 and Jacquinot, of the Solomon Islands. The chief distinction 

 between the two, lies in a thickened, curved ridge, analogous to 

 that of certain species of Papuina, situated behind the aperture 

 of D. mentum. This ridge is a constant feature in a fair series 

 before me, supported by the difference in size, D. mentujii being 

 three quarters of that of D. helicinoides, and the difference of 

 locality, sufficiently isolates the novelty to require a name for it. 

 Major diameter 12, minor 10; height 9 mm. 



D. pyxis, Hinds, from the adjoining island of New Ireland, also 

 is contracted and then inflated behind the aperture, though not 

 so sharply so as D. mentum. In the species now recorded, the 

 genus has its most western outlier. It was demonstrated in a 

 previous article in this serial,* that Dendrotrochus was related 

 not to Papuina but to Trochoinorpha. The group seems worthy 

 of generic recognition. 



Loc. — Ralum, New Britain ; presented by Madame E. E. 

 Kolbe. 



TORNATELLINA WAKEFIELDiE, Cox. 



(PI. xxviii., fig. 14). 



Achatinella wakejieldce, Cox, Mon. Australian Land Shells, 1868, 

 p. 78. 



Specimens of this unfigured species having recently been 

 received by the Trustees from Bryon Bay, New South Wales, 

 the opportunity is taken to illustrate it. 



In reviewing the above quoted work, G. W. Tryon pointed out 

 that the species could not be included in Achatinella.-\ Crosse 

 followed by suggesting that it would be more appropriately placed 

 in Tornatellina,X an opinion which was echoed by Brazier. § 



Petterd reported the species as occurring in rotten wood near 

 Lismore and on the Clarence River, New South Wales. || H. Tryon 

 found it on orange trees in the vicinity of Brisbane, Queensland.^ 



* Hedley— Eec. Austr. Mus., ii., 1895, p. 90. 



t G. W. Tryon— Am. Journ. Conch., iv., 1868, p. 285. 



J Crosse — Journ. de Conch., xvii., 1869, p. 176. 



§ Brazier— Proc. Zool. Soc, 1872, p. 807. 



II Petterd— Journ. de Conch., xxv., 1877, p. 361. 



^ H. Tryon— Report on Insect and Fungus Pests, No. 1, 1889, p. 148. 



