nm 



Helix nobdlS Pfr. H. testa anguste umbilicata, subturbinato-depressa, 

 solida, striata, liueis impre^sis concentricis et obliquis subtiliter de- 

 cussata, fulva ; spira parum elevata, subtus binata; anfractibus 6 

 parum convexis, ultimo medio circulo elevato, obtuso cincto, infra 

 eum fascia saturate castanea; deorsum diliita, ornata, circa umbi- 

 licum paüida; apertura ampla parum obliqua late lunari, incus mar- 

 garitacea; peristomate simplice, recto, margine columellari ad umbi- 

 licum in laminam brevem, triangularem reflexo. Diam. maj. 53, 

 min. 45, alt. 30 mill. 



ïïab. In insula Borneo. Var. pallida, in insulis Philippinis. 



Helix borneensis Pfr. H. testa oblique perforata, depressa, tenuiuscula, 

 striis incrementi distinctis et lineis obliquis , impressis , crebris der 

 cussata, saturnte fulva; spira vix elevata, obtusa; anfractibus 4 pa- 

 rum convexis, celeriter accrescentibus, ultimo rnedio zona nigricante. 

 deorsum diluta, oruato; sutura linea impressa marginata; apertura 

 obliqua, ampla, transverse lunari-ovali, intus margaritacêa, fascia 

 pellucente; peristomate simplice, aciito , margine columellari in la- 

 minam brevem, triangularem, umbilicum semitegentem, reflexo. 

 Diam. maj. 52, min. 42, alt. 25 millim. 

 llab. In insula Borneo. 



Helix platijstyla Pfr. H. testa imperforata, conica, solida, costulato- 

 striata, albida, linea rufa ad suturam ornata; spira conica, acutius- 

 cula; anfractibus 6 convexiusculis, sensim accrescentibus, ultimo 

 obsolete angulato, basi subplano; apertura obliqua, late lunari; pe- 

 ristomate simplice, marginibus subparallelis , dextro breviter ex- 

 panso, columellari superne pordilatato, calloso. Diam. maj. 22, 

 min. 19 , altit. 19 millim. 

 Habit. In insulis Moluccis ? 



PiXiLLus H. et A. Adams. 



Shell pupiform, rimate; spire acuminated; aperture semiovate 

 ascending on Ihe body-whoii ; inner lip adnate, spreading, flexu- 

 ous; cokimella with a single prominent toollilike plait, outer lips 

 wiüi a doublé peritreme, enïarginate anterioriy; unnbiücal region 

 witli a spiral, elevated ridge, terininating in a notch at the fore 

 part of the apertura. 



Paxillus adversus H. et A. Adams. P. testa ovato-acuraiuata, si- 

 nistrali rimata, spira acuminata, corneo-fusca, semipellucida, longi- 



■ tudinaliter substriata. 

 Hab. Singapore. 



