164 HELIX-HADRA. 



REEVE, Conch. Icon. f. 1353. Hadra appendiculata SEMPER, Rei- 

 sen im Arch. Phil., Landmoll. iii, p. 160. 



A very variable form, generally with a greater number of nar- 

 row bands and lines than fig. 71 shows. It is very variable in size 

 and contour. Another locality given by Pfeiff'er is " Drayton Range" 

 (small variety.) Specimens before me are marked " Port Curtis." 



H. THATCHERI Cox. PI. 36, fig. 24. 



Shell deeply and openly umbilicated, depressedly globose, rather 

 solid, finely obliquely striated, dull horny yellow, ornamented with 

 a broad, dark chestnut band below the suture, with five or six fine 

 dark lines round the center of the whorls, and also a dark undefined 

 zone round the umbilicus, which is of the same color ; this dark 

 coloration extends across the last whorl in a broad undefined band 

 along the margin of the aperture, and joins the band beneath the 

 suture; spire flatly conoid; whorls 6*, flattened, the last becoming 

 much inflated, rapidly enlarged and a little depressed in front ; base 

 flat ; aperture oblong-oval, large, oblique, livid white within ; lip 

 slightly thickened and everted, of a lighter color than the interior ; 

 margins approaching, joined by a thin dark callus ; columellar mar- 

 gin much dilated, half concealing the umbilicus. ( Cox.) 



Alt. 1-15, greater diam. T60, lesser 1'20 inch. 



Mount BersaTcer, Rockhampton, Queensland. 



H. thatcheri Cox, P. Z. S. 1870, p. 170, t. 16, f. 2. PER. Monogr. 

 vii. 



Intermediate between H. appendiculata and H. incei, says Dr. 

 Cox, but easily distinguished from either by the marked inflation of 

 the last whorl. 



H. HILLI Brazier. PL 36, fig. 27. 



Shell umbilicated, turbinately globose, thick, dark chestnut, spi- 

 rally lined with darker lines; whorls 6-j, convex, the three forming 

 the apex of a light yellow, with a dark broad band below the suture, 

 base convex, lined as above ; aperture oblique ; peristome thickened 

 and reflected, white ; margins approximating, the right slightly de- 

 scending, columellar thickened and partly expanded over the umbili- 

 cus. (Brazier.') Alt. 12, greater diam. 17, lesser 14i lines. 



Mt. Elliott, Queensland, Australia. 



H. hilli BRAZ., P. Z. S. 1875, p. 32, t. 4, f. 3. 



Compare appendiculata, incei, etc. 



