OF NEW SOUTH WALES. 99 



This species is somewhat allied to Helix Franklandensis Forbes 

 — it differs by being much thinner, more turbinated, coarser in 

 sculpture, smaller umbilicus, pale yellowish, with darker radiating 

 streaks. It was first found by Mr. C E. Beddome, on Albany 

 Island, some distance below the surface, amongst great quantities 

 of volcanic scoria, and when at Cape York last July, 1875, I also 

 found it in the same localities 



2. — Helix (Rhytida) Jamesi. 



Shell umbilicated, flatly orbicularly depressed, very closely 

 and finely striated, glossy, bright horn yellow, streaked with brown 

 rays ; whorls 4, slightly convex, quickly increasing, last very 

 large and flattened in front ; not descending, striae showing more 

 plainly at the suture, spire depressed, apex obtuse, roundly convex 

 at the periphery, base rounded, nearly smooth, rayed as above, 

 umbilicus wide and moderately deep, aperture diagonal, lunately 

 oval, peristome thin, simple, margins distant, right straight, the 

 outer arched, columellar slightly reflected. 



Diam. Maj. 10|, min. 8|, alt. 4 lin. 



Hob. Palm Island, North-east Australia. 



This species approaches to Helix capillacea Fer. It differs by 

 being flatly depressed, nearly smooth, showing very faint silky 

 lines, at the suture they become more like fine ribs ; colour dif 

 ferent, apd rayed with brownish-yellow ; umbilicus much wider, 

 and in all respects a much thinner shell. Five specimens found 

 under stones in the thick jungle. 



3. — Helix (Rhytida) Hobsoni. 

 Shell umbilicated, rather flatly orbicularly depressed ; thin, 

 glossy, dark-yellowish horn, nearly smooth, faintly striated, with 

 numerous irregular dark radiating rays; whorls 3 to 3|, slightly 

 convex, last large, depressed above, descending a little in front, 

 spire slightly elevated, apex obtuse, suture impressed, periphery 

 roundly convex, base convex, smooth, umbilicus large, perspective, 

 regularly rounded at the margin, aperture somewhat oblique, 

 lunately oval, interior pink, peristome simple, thin, margins 

 approximating, columellar margin thinly expanded. 



