COMINELLA. 205 



(in part ), whilst lineolata of Reeve he considers a distinct species. 

 1 unite the three, tinding the surface painting inconstant, and 

 consider them very distinct from G. (estudinea: the latter being 

 much wider, with less exserted spire and without ribs. C. alveo- 

 lata, Kiener (fig. 420), lias sometimes incised revolving lines, 

 between which the revolving dark spots take the form of oblong 

 tesselations ; but these lines are frequently absent, and the mark- 

 ings vary all the wa}' to uninterrupted l)antls. 



Var. viRGATA. 11. and A. Adams. Figs. 417. 425-429. 



Revolving lines continuous ; surface occasionally with longi- 

 tudinal brown flammules. 



Name proposed for C. lineolata, ilnoy (fig. 425), supposed to 

 be a difterent species from that of Lamarck. J\eeve proposed 

 the name C. Quoyi (fig. 419), at an earlier date for the same form 

 in the event of its proving distinct. I do not use Reeve's name 

 for the variety, because it had already been used by Kiener. 

 C. obscura, Reeve (fig. 42(i), is a slow-growing, thicker form, in 

 which the revolving bands occasionally become slightly elevated 

 above the surface. C. pluriannalata, Reeve (fig. 427), said to 

 come from Swan River, is also a viryata : as well as C. lineare 

 (tig. 428), and C. lactea, Reeve (fig. 429). 



C. COSTATA, Quoy. PL 81, figs. 430-434, 438. 



Yellowish brown or ash color, tessellated with revolving series 

 of reddish brown oblong spots sometimes confluent into lines. 

 Ribbed on the shoulder of all the whorls, with incised revolving 

 lines. Lip and columella fawn color, aperture with revolving 

 raised lines. Length, 1 to 1-25 inches. 



So. Australia. 



A very variable species, ditfering from forms of G. lineolata 

 only in the ribs being developed on the body -whorl : more ex- 

 tensive collections may prove that this is not only synonymous 

 with that species, but that the two following species ( G. acutino- 

 dosa and filicea) should be referred to it also. The list of 

 synonyms is already sufficiently extensive : G. Angasi, Crosse 

 (fig. 432), G. Adelaide nsis, Crosse (fig. 433), G. eburnea, Reeve 

 (fig. 434), which is a whitish variety, and G. funerea, Gld. (fig. 

 438), which partially connects this species with acutinodosa. 



