150 HELIX-HADRA. 



I 



seein to be separated by only trifling characters, hardly worthy of" 

 names, except so far as such divisions may aid one in understanding 

 so numerous a group of species. The sphperospira are all inhabitants 

 of Queensland most of them of the subtropical northern portion. 

 Their western distribution is apparently checked by the arid sand- 

 stone region of North Australia. 



The Sphcerospira proper may be most naturally divided into two 

 groups : (1) imperforate and (2) umbilicated forms. 



Imperforate Sphcetrospira. 



H. FRASERI Gray. PI. 33, figs. 58, 59, 60. 



Shell imperforate, subglobose, spire subconoidal or depressed, 

 brownish-yellow with numerous spiral lines and bands of chestnut, 

 suture edged by a light line and a dark band ; aperture light with- 

 in, lip broadly reflexed, dark brown, appressed over the umbilicus. 



Solid, globose, varying much in height of spire. Back of the lip 

 dark brown, this color suffusing often the latter part of the body- 

 whorl. Spiral bands and lines very numerous and inconstant in 

 number, width and position. Surface seen under a lens to be mi- 

 nutely, almost obsoletely granulated or wrinkled, and sometimes 

 fine, close spiral lines are apparent. Whorls 6, slightly convex, the 

 last deflexed in front, convex below, and a little impressed at the 

 place of the covered umbilicus. The lip is broadly expanded and 

 reflexed except at its upper junction with the body-whorl. Parietal 

 wash of callus transparent. 



Alt. 33, greater diam. 39, lesser 34 mill. 



Alt. 35, greater diam. 37, lesser 32 mill. 



Alt. 42, greater diam. 48, lesser 38 mill. 



Clarence and Richmond Rivers, N. S. W.; Brisbane and Wide 

 Bay, Queensland, Australia. 



H. fraseri GRAY, Zool. Beechey's Voyage, Moll. p. 143, t. 38, f. 6,. 

 1839. GRIFF. Anim. Kingd. t. 36, f. 6. PFEIFFER in Conchyl. 

 Cab. p. 308, t. 52, f. 9, 10 ; Monographia i, p. 246. Cox, Monog. 

 Austr. Land Sh. p. 64, t. 10, f. 6. REEVE, Conch. Icon. f. 360.- 

 HEDLEY, Proc. Roy. Soc. Queensl. 1888, p. 58, 151 ; 1. c. 1889, p. 

 103, plate vii, (anatomy). 



One of the largest species of Sphcerospira. The closed umbilicus, 

 broadly reflexed blackish lip, light interior of the aperture and large 

 size will distinguish it from the numerous allied multilineate forms. 

 The granulation of the surface is not perceptible to the touch, and> 



