HELIX. 



PlateCXLVIII. 



Species 1)58. (Mus. Cuming.) 



Helix Alt.\Blc.\. Eel. ledd imperforatd, globoaS, albidii, 

 mlidd, viinulmime striata, fusciis fmcin interriiplU 

 alio-punciatii ornald ; anfraclibm qu'mque, planiut- 

 cul'ui, leitti accrescenliAus, ultimo anlice injlalo, siiiitu 

 dejlexo ; aperturd angmlatd, tutus caslaiied ; perislo- 

 male allo-labiato, margiiiihus suhparallelk, dexlru ex- 

 panso, basali dilatato, g'dibo, unideiitaio. 



The Arabic Helix. Shell imperforated, globose, wliitisli, 

 solid, very minutely striated, ornamented with whitc- 

 punetured interrupted brown bands ; whorls livi , 

 rather flat, increasing slowly, the last inflated in front, 

 suddenly deflected; aperture narrow, chestnut within; 

 lip white-edged, margins nearly ])arallel, right mar- 

 gin e.\panded, basal dilated, gibbous, one-toothed. 



Tervek, Catalogue, p. 14. pi. 2. f. 1, 2. 



Hab. Atlas mountains, North Africa. 



A rather solid bepunetured shell, with a prominent 



tooth in the aperture. 



Species 959. (Mus. Cuming.) 



Helix Seetzeni. llel. testa ungustksime iimbilicald, de- 

 presso-globosd, soliduld, creiaced, striata; spird parum 

 elatd, veHice sublili ; anfraclibus quinque ad sex, con- 

 vexiusculis, ultimo ventroso, antice parum descendente, 

 aperturd Immri-subcirculari, intits albd ; perislumate 

 recto, acuto, iiitus labiato, marginiius coiwergentibus, 

 columellari subdilatato, valde arcuato. 



Seetzen's Helix. Shell very narrowly umbdicated, de- 

 pressly globose, rather solid, chalky, striated ; spire 

 but little raised, fine at the apex ; whorls five to 

 six, rather convex, the last ventricose, but little de- 

 scending in front; aperture luiiar-subcircular, white 

 within ; lip straight, sharp, edged within, margins 

 converging, coluinellar margin subdilated, much 

 arched. 



Kocii, Zeitsclirift fiir Malac. lS-i7, p. l-l. 



llab. On the shores of the Dead Sea, between Dschidda 

 and Jericho ; Seetzeu. 

 A dead white calcareous shell, of simple growth. 



Fig. 506 b. (Mus. Cuming.) 



.\ variety of Helix lU^pauica, described and fiirured at 

 I'l. XCIII." 



Species ytio, (Mus. Cuming.) 



Helix DcpotetiaNa. ITel. teJitd imper/oratd.mbglobo'ui, 

 albiJd, rngulls el linein npiralibut tiibopacd, iiilrrdum 

 fiiaco-faaciatn tet concjlore ; anfractibut y 

 preiain plmtulatis, uUiiiiit duobim coHteiis, i. 

 subilh talde dejlexo ; aperturd perubliqud, Icli lutinn ,■ 

 peristomale fusculo-aliido, rejlexo, acuto, lubtabinlo, 

 tiiargiiie columellari stricliore, giibo, fauceque rnn- 

 laneii. 



Dii'otet's Helix. Shell imperforated, subgiolioM;, 

 whitish, subopakc, with fine wrinkles and spiral 

 lines, sometimes with five brown bands, or ci:' \ 

 brownish; whorls five, the uppermost rather 

 tencd, the last two convex, the last suddenly inucli 

 deflected in front; a|H'rturc very oblique, bi. 



• lunar ; lip brownish-white, reflcctwl, sharj). 



lipped, columellar margin more drawn out, giblK)U'> 

 and with the interior chestnut. 



Teuveh, Catalogue, p. 13. pi. 1. f. 1-6. 

 Helix Zuffarina, Ten'er. 



Hnh. North Africa. 



The white specimen selected for rej)rcsentation in the ac- 

 companying plate is the more frequent state of the specif*. 



Species 961. (Fig. a, b, Mus. Cummg.) 



Helix Boissieki. Ilel. testa oljtecle umbilicatd, n-i'. - 

 globosd, crassd, irregulariter striata, Mi/iduld, ■■ 

 ced ; spird elecatd, apice obtusd ; ai\fraclibMt quimjur. 

 concexiuscutis, ultimo anlice dejlexo, rugato, coMtlrirlo, 

 basi impresso ; aperturd perobliqud, panmld, trruri- 

 foriiii, latere dextro aiigulatu ; /■■ 

 alljo munito, margiuibut callo (' 

 expanso juHctis, labia marginis basali* arcuato, dilalalo, 

 versus dextrnm attenuato, morgiue tupero luberculis 

 cra.ssM subcoiijliieiitibiis instructo. 



Uoissier's Helix. Shell with a covered umbilicus, ix>- 

 nically globose, thick, im-gularly striated, shinint;, 

 chalky; spire raised, obtuse at the apex ; whorls fivr, 

 rather convex, last whorl deflected in front, wrinkled, 

 constricted, impressed at the base ; npcrlure very 

 oblique, rather small, hatchct-shnpcd, angulatcd on 

 the right side ; lip thick, white-edged, mar. 

 bv a ..lin callosity, expatuled aljove the 

 edge of the basal margin arched, dilate<l, atlrnuntrtl 



February', 1S53. 



