52 MOLLUSCA TKRRESTRIA KT FLUVIATILIA 



41. Ilcli.v spiroibis, Lowe 



Testa iimltilicata, párvula, (lepresso-leiiticularis, plnniiiscula, leiiuis, fusca, 

 supra graniihita, conrertirn .slrialula, fero unicitl(tr, fasciis evaiiescentilius; spira 

 planato-depressa, apice obtusa; sulina impressa; umbilicus amplus, lalulus, 

 perspeotivus; aiifraclus o convexiusi-uli, ulliiiius obsolete ari;,'ulatn-i'ariiialus, aii- 

 tice vix dellexus, ajjerturam versus suligrauulalus; apertura obliqua, ovalo-r(j- 

 tundata; peristorna subexpansum, album, undique subsoluluni. — Animal elonga- 

 tuin, gracile, iiaud tirnidum, corporc albo, pellucido, dorso caerulescente, fronte 

 caeruleo, superioribus tentaculis cylindricis, caerulescentibus, apice bulbosis, in- 

 ferioribus brevissimis, caeruleis, pede albo, antice obtuso, poslice acutiusculo, 

 pallio albo. 



Diam. maj. r;, min. l, alt. 2 ' > mill. 



Helix spirorbis, Low. Syn. Diagii. : et Cat. rnoll. Mad. 

 » Maderensis var p Pfeif. Mon. lielie. 

 » » )i Alb. Mal. Mad. (íig. bona) 



Habitat copiose sub la|)idibus i)rope Paul do Mar ad radicem promontorii 

 Girão, ad Fajã (1'OriUia, larior iii insula Deserta Australi. 



Obs. QuanKiuauí ciariss. IMeilTero, ^VullasluIlO (in iiit.), Aliicrsio mera va- 

 rietas H. -maderensis videatur, Loweanam speciem cum ciariss. Watsono servan- 

 dam censeo, quòd testa valde minore, tota giaiiulata, magis discoidea, spira 

 depressiore, sutura magis profunda, carina oblusiore, umbilico majore, magis 

 profundo, ])erisíomate nec omniiio soluto sat discernilur. 



Obs. ll.-leptostictae Lowe próxima; testa tamen depressiore, graciliore, 

 umbilico amjiliore, granulationibus irregularilius, grossis dilfert. 



Species sic dieta a genen; Spirorhis. 



Primus invetiit ciariss. Hev.' Loweus. 



(Cl TESTA TURBINATO-DEPRESSA 



iíi. Hdix le|)lflsticta, Lowe 



Testa umbilicala, conoidea, rotundata, ílavo-cornea, teiiuis, ruguloso-striata; 

 spira convexo-depressiuscula; sutura distincta; umbilicus patulus, spiralis; an- 

 fractus i}-l)'/i convexi, minute retinilato-granulali. ulliinus iibluse carinatus, 

 subangulalus, obsolete fasciatus, basi exililer granulatus, antice breviter defle- 

 xus; apertura diagonalis, rotundata; perisloma albo-subincrassatum, marginibus 

 callo junctis, basali refiexiusculo. — Animal valde limidum, pigrum, corpore sor- 



