650 NOTES AND EXHIBITS. 



Dr. Cox also contributed the following 

 Note on Thersites pachystyla, Pfr., var. subfnsco-zof'ata, var.nov.^ 



from Queensland. 



(Thersites — Sub-Genus Xanthomeloti — PacliystyJa). This 

 species was descriljed by Pfeiffer in the Proceedings of the Zoo- 

 logical Society of London for IS-tS (p. 71). It has a wide range, 

 being found on the eastern water-sheds only from Cairns in North- 

 east Queensland on the Barron River to possibly as far south as 

 Brisbane. It is an abundant species, and as might be expected 

 from so extensive and varied a territorial distribution, varies very 

 much in size, ponderability, colour, and thickness of the shell. In 

 most localities it is found buried at the roots of trees in loose 

 earth four or five inches below the surface, but in other localities 

 will be secreted away in hollow timber, etc. In 1868 in my 

 Monograph of Australian Land Shells, I mentioned that I had a 

 very thin greenish-olive variety of this species, of comparatively 

 very small size, measuring about 0-95 and 0'80 in the greater and 

 less diameters and 0-60 only of an inch high, from Port Curtis, 

 where and from the Port Denison district I have found it to vary 

 most. Von Martens has given to these small varietal forms the 

 name of " Dameli " (Mai. Blat. xvi. 1869, p. 77). The variety 

 w^iich I now exhibit and of which I possess about ten mature 

 specimens with others in the younger stages of growth, is about 

 on an average 32 mm. high, .34 in the greatest, and 30 in the least 

 diameter. The spire is less raised than in typical specimens of 

 the species; above the centre of the body whorl a well defined 

 dark orange-brown band separates the upper from the lower part 

 of the body whorl only, but does not extend up on to the next 

 whorl or any of the apical whorls; the colour shades off as it 

 ascends from this band to the suture, but becomes intensified 

 again as it reaches the suture, giving in some of the specimens a 

 second but less defined subsutural band; there is a third decided 

 dark zone in all the specimens round the umliilical area; it is not 

 sharply defined but sufficiently so to make a conspicuous feature 

 of the base of the shell; it gradually shades off on the body whorl 

 which is globular, solid, glossy, covered uniformly with a tawny 



