HELIX. 265 



H. MARCHIAN.E, Cox. PI. 37, figs. 66, 67. 



Broadly, perspectively umbilicated, thin, translucent, glossy, 

 pale horny yellow, irregularly finely striated throughout and 

 with irregular transverse horny streaks ; whorls 4J-5, convex, 

 very slowly increasing, suture wide and rather deep, last whorl 

 scarcely descending in front. Diam. 5 mill. 



Tasmania. 



H. RAMSGATENSIS, Cox. PL 37, figs. 72, 73. 



Narrowly umbilicated, finely regularly costulate, reddish horn 

 color ; whorls 5, gradually increasing, rather flatly compressed 

 laterally, rounded above, suture deeply impressed. 



Diam. 6*5 mill. 



Tasmania 



H. (PARYPHANTA) FULGETRUM, Cox. PL 37, figs. 70, 71. 



Very widely umbilicated, thin, translucent, irregularly finely 

 striated, pale horny yellow; whorls 3j-4, flatly slanting, rapidly 

 increasing, last whorl proportionally much distended, not descend- 

 ing in front, suture deeply impressed and finely margined. 



Diam. 2'5 mill. 



Tasmania. 



Allied to the Australian If. splendidula, Pfr. 



H. FUSCORADIATA, Cox. PL 37, figs. 62, 63. 



Widely umbilicated, thin, smooth, shining, pale horny yellow, 

 ornamented with irregular broad light-brown rays, with growth 

 striae ; whorls 4, gradually increasing, rounded, suture deeply 

 excavated, umbilicus with steep walls. 



Diam. 3'3 mill. 



Tasmania. 



GONIODISCUS (p. 43). 



H. DAVEYENSIS, Cox. PL 37, figs. 87, 88. 



Broadly, deeply umbilicated, thin, opaque, light brown, with 

 regular, widely separated costse, the interstices finely transversely 

 striated ; whorls 6, flat above, base more convex, the umbilical 

 region defined by an angle, into which the sculpture enters. 



Diam. 10 mill. 



Tasmania. 

 See p. 24. 



