SMITH : AXTSTEALIAN LAND-SHELLS. 9 1 



Helix (Hadra) Prudhoensis, n.sp. PI. YII. Fig. 9. P.M. 



Testa umbilicata, globosa (albida, epidermicle llavescente induta ?) ; 

 anfractus 5 convesi, celeriter crescentes, lineis incrementi obliquis 

 striati, iiltimus magnus, inflatus, antice subito oblique descendens ; 

 spira obtuse conoidea; apertura rotundato-lunata, longit. totius f 

 adaequans ; peristoma intus leviter incrassatum, superne vix expansum, 

 antice leviter eiiusum, marginibus callo tenui junctis, columellari 

 obliquo, reflexo, superne dilatato, umbilicum scmiobtegente. Diam. 

 maj. 25, min. 20 mm.; alt. 22 mm. Apertura 14 longa, 11*5 lata. 

 Mab.—'Prudhoe Island, N.W. Australia (Lieut. J. W. Combe, H.M.S. 

 "Penguin," September, 1891). 



This is a smooth globular species, probably without much colora- 

 tion, judging from the only two specimens at hand. These are in 

 a dead condition, without any trace of colour, and probably are more 

 or less bleached. The umbilicus is deep and moderately broad ; 

 the inner edge of the oblique columella is gently arcuate, but the 

 outer margin is almost straight or faintly incurved. 



Helix (Hadra) Burnereksis, n.sp. PL YII. Pig. 18. P.M. 



Testa subobtecte umbilicata, depresse globosa, sordide albida, infra 

 suturam zona lutea obsoleta eincta, nitida, striis incrementi tenuissimis 

 obliqiiis arcuatis, aliisque spiralibus minutis sculpta ; anfractus 6 

 convexiiisculi, lente accrescentes, ultimus vix descendens, pone labrum 

 et circa umbilicum luteo tinctus, postice in medio obsolete angulatus ; 

 spira convexe conoidea, ad apicem obtnsiuscula ; apertura obliqua, 

 lunata, alba ; peristoma fusco-carneum, tenue, expansum, margine 

 columellari reflexo, umbilicum fere obtegente, intus vestigium dentis 

 exhibente. Diam. maj. 19, min. 16-5 mm.; alt. 13 mm. Apertura 

 7 alta, 8 lata. Hab. — JBurner Ranges, Derby District, N.W. 

 Australia (Cox, in British Museum). 



Of this species there is only a single adult and two young examples 

 in the British Museum (Natural History), presented by Dr. J. C. Cox. 

 This species, in the young state, is widely perforate to the apex, and 

 the body-whorl is rather acutely angled at the periphery. This 

 angulation is only just traceable in the adult shell. It is allied 

 to IT. Si/Jcesi, but is smaller, is less elevated, has a more coloured 

 lip, and is destitute of the brown bands, or exhibits a mere trace of 

 one immediately below the suture in the body-whorl. 



Helix (Hadra) Montalivetensis, n.sp. PL VII. Fig. 21. B.M. 



Testa depresse globosa, anguste umbilicata, mediocriter tenuis, 

 nitida, cornea, superne rufo bi-cingulata, circa umbilicum rufo tincta ; 

 spira breviter convexe conoidea, ad apicem obtusa ; anfractus 6 lente 

 crescentes, convexiusculi, striis tenuibus obliquis arcuatis, aliisque 

 spiralibus tenuissimis plus minus obsoletis sculpti, ultimus antice 

 leviter descendens, infra medium baud zonatus ; apertura leviter 

 obliqua, lunata; peristoma tenue, albidum, breviter expansum, 

 margine columellari perobliquo, rectiusculo, intus incrassato, sub- 

 dentato, superne ad insertionem rufo, dilatato, umbilicum semi- 



