BY C. F. ANCBY. 775 



tantum sculpta, supra fulvescens, passim obscure substrigata, ad 

 suturam peuultimi pallidior, zona peripherica albida sat angusta, 

 infra late corneo-fulvescente marginata cingulata, basi lactescente- 

 albida. Spira convexa, parum elevata, late subconoidea, obtusa. 

 Anfractus 5 regulariter convoluti, lente accrescentes, convexius- 

 culi, sutura impressa; ultimus depressus, initio tantisper sub- 

 angulatus, leviter antice descendens, basi haud inflatus. Apertura 

 obliqua, transverse oblonga, lunata. Peristoma album, incrass- 

 atum, anguste reflexum, marginibus parum conniventibus, basali 

 subelliptico vel rectiusculo, paulo magis crasso, imo ad dextram 

 interdum subtuberculifero, columellari leviter dilatato. 



Diam. maj. 13-U, min. 11^-12^, alt. 6^-7 mill. 



Hab. — Oscar Range, 100 miles inland, Derby, King's Sound, 

 N".W. Australia (W. W. Froggatt). 



From the several specimens kindly sent by Mr. Froggatt, it 

 will be seen that the above described shell is very different from 

 its ally. Helix f^^Chlvritis") rectilahrum, E. A. Smith {Joe. cit.jTp. 88, 

 PI. VII., fig. 14), said to have been found at Parry Harbour, JST.W. 

 Australia. It has nothing of the peculiar epidermis and granular 

 surface of that species and is a shining shell, quite similar in 

 texture and colour to Gampylcea ichtyonima, of Austria. More- 

 over, it is easily distinguished from rectilahrum, which seems to 

 be an unhanded species in the character of the basal edge which 

 is not so rectilinear in orthocheila as in rectilahriini and often 

 provided, at its junction with the right margin, with a somewhat 

 tuberculous thickening. 



I think this, as well as T. Froggatli, inonograminia, millejmnc- 

 tata, rectilabrum, Baitdinensis, Collingei, cyclostomata and Tucktri 

 belong rather to Trachia than to Chloritis and Gonostomo, in 

 which genera Mr. E. A. Smith has located some of them. 



5. Trachia monogramma, Ancey, nov.sp. 



(Plate XXXVI., fig. 3.) 



Testa orbicularis, aperte pervieque sed mediocriter umbilicata, 

 oleoso-nitens, obsolete lineis incrementi et oblique striatula, tenuis, 



