AND MAEINE SHELLS FEOM NOETH-EAST AU8TEALIA. 31 



ance, suture distinctly keeled, umbilicus large, one prominent 

 keel round it, aperture oblique, circular, peristome simple, tbin, 

 acute, operculum horny yellow, thin, concave, multispiral. 



Diam. maj. 1, min. f , alt. | lin. 



Hab. Fitzroy Island, north-east coast of Australia ; found 

 under wood near a fresh-water stream. (Coll. Brazier.) 



This interesting species belongs to the new sub-genus Ditropis 

 of Blanford's ; it reminds one of a miniature Tropidophora cuvi- 

 eriana and tricarinatus, with their large keels. I have named it 

 after Mr, White, F.E.A.S., Astronomer of Melbourne, Victoria, 

 he having accompanied me across the Fitzroy Island. 



*6. DiPLOMMATINA Q-OWLLANDI. 



Shell dextral, rimate, acuminately oblong, finely and obliquely 

 ribbed, interstices smooth, white, hyaline, spire conical, apex 

 acute, sometimes decollated, whorls from 6 to 7, sometimes 9 ; 

 the first three forming the apes are regular and tapering, the 

 fourth broad, the fifth longer and broader, sixth very small, 

 having a pinched or distorted appearance in front ; seventh or 

 last extends nearly up to the suture of the sixth ; convex, 

 aperture vertical, sub-circular, peristome thin and broad, margins 

 shining, joined by a thin callus, upper broadly expanded, colu- 

 mellar margin thick, straight, with a small canal, minute tooth 

 within. 



Length 1\, breadth f , min. | lin. 



Hab. Fitzroy Island, north-east coast of Australia ; found at 

 the root of a large tree, crawling upon the grass and roots during 

 a heavy rain. (Coll. Brazier.) 



This curious species difiers from any of the Diplommatina that 

 I have met with ; the first three whorls forming the apex are 

 regular and tapering, the fourth is a little broader, the fifth still 

 longer and broader, the sixth having a pinched-in appearance ; 

 the last is large, giving the shell a most distorted appearance. 

 The greatest breadth is at the fifth whorl, the least at the sixth. 

 The few hundred that I collected are all of the same description, 

 very few with nine whorls. 



I have named it after my late lamented friend John Thomas 

 Ewing Gowlland, Stafi" Commander, R.N. , who was unfortunately 

 drowned while employed surveying Port Jackson, August, 1874, 

 and the gentleman who took charge of the steamer of the Eclipse 

 Expedition to Cape Sidmouth. The many pleasant hours spent 

 with him will always be remembered by the members of the Aus- 

 tralian Eclipse Expedition. 



