tfELEX— Plate fV. 



obi; ' "npezifonn ; Ijp sharp, btraij:ht, columel- 



lar reflecu-d o»er the umbiliaui. 



Jonas, I'ru./ 



UaL. Island - ,, "<«; Cuminft. 



Thi» U a very distinct species, first, in form, owing to a 

 peculiar depression of the sutures ; secondly, in marking, 

 Hi •«. of a shower of zigzag marks upon a dark 



cti' ind. 



Species 18. (Mua. Cuming.) 



Helix bapa. Htl. te$ld oblique unddicata, convexo-ro- 

 lundata, linfu concenlricu tulcU tpiralibu* decuttatd, 

 paUuD nlirareo-fiucd ; an/raclu ultimo /tucid angmtd 

 cu iilalo, iiiilut undiquf minuti malUato ; 



^,, ...td; aperturd Miqud, lunato-otali ; peri- 



ttmnaU limplici, margine eolumellari breciter dilaUito, 



XiiE K - liliqucly umbilicated, convexly 



n)unded, decussated with concentric lines and spiral 

 grooves, p.i!' ' «n; last whorl encircled with 



a nam)w cLi i , minutely indented throughout 



beneath ; spire rather raised ; aperture oblique, lunar 

 oval; lip fimple, columelkr edge shortly dilated, 

 nearly covering the umbilicus. 



MiLLEB, Verm. vol. ii. p. C7. 



Halj. Island of Amboyna ; Beck. 



This species is referred to Miiller's //. rapa, but it is 

 difficult, out of the several allied species now known, to say 

 whirh is the original typ;. 



Species 19. (Ihlus. Cuming.) 



Helix Mullebi. Uel. U$td vix umlAlicatd, convezo-or- 

 bicultitd, mhrarinatn, nolidd, /ulvd, iati taturatiore, 

 iiffra cariiiam /ancia laid ru/d nolald ; anfraclibua 

 qvatuor ad tjuinqw, »uprnni» plantA, minute rugoto-re- 

 liculalii, ultimo certut aperturam conrexo, irregula- 

 riter maUealo-rugotu ; aperturd lunato-ovali ; peri- 



lifmate mmpliei, margine npero uibimflexo, colmmeUan 

 breviter ezpaiuo, perforationem tegenle. 



Miller's Helix. Shell umbilicated, convexly orbicular, 

 slightly ke»-led, solid, fulvous, darker at the base, 

 marked with a broad red band beneath the keel; 

 whorls four to five, upper ones flattened, minutely 

 rugosely reticulated. List whorl convex towards the 

 aperture, im-gularly roughly icdented ; npt-rture lunar- 

 oval ; lip simple, upper edgi- slightly inflected, colu- 

 mcUar edge shortly expanded, covering the umbilicus. 



Pfeifkeb, Zeilsihrift TurMahie. 18*4, p. 178. 



llah. Island of Miiidoro, Philippines ; Cuming. 



Of an orbicular form, with a rather roughly indented 



surface. 



Species 20. (Mus. Cuming.) 



Helix Lamakckia.na. Jlel. tettd oblique umiUicatd, de- 

 preud, tuhcarinatu, tenui, tupra carinam minuti granu- 

 lotd, infra ruguloid, oUtaceo-rufd, infra carinam fascia 

 nigro-rnfd, deorsum dilutd, omatd ; tuturii imprensit ; 

 ipird parum elevald ; anfractibut quatuor ad guinque, 

 lupreinii planiutatlvi, minu/uitime deciutatit et mal- 

 leatit ; aperturd late tllipticd, iutut laded vel opalind ; 

 perutomate timplici, tenui, ad columeUam dUatato, re- 

 fiexo, umiilicum obliquum temilegente. 

 Lamabck's Helix. Shell obliquely umbilicated, de- 

 pressed, irregularly striated and wrinkled, olive-red, 

 ornamented «ith a blaek-red band beneath the keel, 

 then fading ; sutures impressed ; spire but little 

 raised ; whorls four to five, the uppermost rather flat, 

 indented and very minutely decussated ; aperture 

 broadly elliptical, milk-while or opaline within ; lip 

 simple, thin, dilated and reflected ut the columella, 

 half-covering the oblique umbilicus. 

 Lea, Trans. Amer. Phil. See. vol. vii.p. 461. pi. 12. f. 11. 

 Ilab. Island of Masbate, Philippines ; Cuming. 



A bold, rather solid shell, with the upper surface thickly 

 rudely indente<I 



