296 Zoological Society. 



21. Helix galactostoma, Pfr. II. testd umhilicatd, convexo- 

 orbiculatd, solidd, striatd, sub lente gramilatd, fulod ; spird 

 brevi, /omicatd, obtusd ; anfractibus 4^ convexiusculis, sensim 

 accrescentibus, penultimo angidato, ultimo snbdepresso, antici 

 dejlexo, basi subangulatim in umbilicum, mediocrem, pervium, 

 \ diametri vix superantem descendente ; aperturd perobliqud, 

 lunari-ovali, intus laded; peristomate simplice, fusculo-lim- 

 bato, marginibus conniventibus, callo junctis, dextro brevissimd 

 expanso, basali subreflexo, columellari albo, supra umbilicum 

 dila tato-reflexo . 



Diam. maj. 36, min. 31, alt. 18 mill. 

 Hab. in insula Madagascar. 



22. Helix rosarium, Pfr. II, testd umbilicatd, depressd, tenui, 

 superne subtilissimb granulatd, diaphand, pallide fulvd, Jlam- 

 mis a suturd exeuntibus, cingidisque 3 interruptis, moniliformi- 

 bus rufis ornatd ; spird pland ; anfractibus vix 5 convexii, 

 ultimo subdepresso, antice non descendente, basi radiatim stria- 

 tulo et lineis impressis spiralibus distantibus notato, circa um- 

 bilicum mediocrem, infundibuliformem subcompresso ; aperturd 

 parum obliqud, lunato-subtriangulari ; peristomate albo-labiato, 

 breviter rejlexo, margine supero ab insertione primum ascen- 

 dente, turn sirmato, basali strictittsculo, repando, columellari 

 brevi, triangulatim patente. 



Diam. maj. 21, min. 17, alt. 9 mill. 

 Locality \mknown. 



23. BuLiMUS (Partula) decussatulus, Pfr. B. testd perfo- 

 ratd, ovato-conicd, tenui, striis incrementi lineisque spiralibus 

 minutissime decussatuld, vix nitiduld, fulvescenti-albidd, dia- 

 phand ; spird brevi, conicd, obtusiuscidd ; suturd mediocri ; 

 anfractibus A\ convexis, ultimo ^ longitudinis cequante, rotun- 

 datd ; columelld subplicatd, recedente ; aperturd angulato- 

 ovali; peristomate simplice, tenui, marginibus conniventibus, 

 dextro campanulatim expanso, columellari super perforationem 

 reflexo. 



Long. 15, diam. 8f mill.; ap. 9 mill, longa, 6i lata. 

 Kab. in insula Navigatorum. 



24. BuLiMus (Partula) navigatorius, Pfr. B. testd dex- 

 trorsd, perforatd, oblongo-ovatd, solidd, obsolete granulato- 

 striatd, nitiduld, fulvd, lineis confertis saturatioribus signatd ; 

 spird conicd, acutiusculd ; suturd levi, albo-marginatd ; an- 

 fractibus 5 planiusculis, ultimo spiram superante ; aperturd 

 oblongd, angustd, intus albidd, dente calloso parvxdo profundo 

 in ventre anfractus penultimi munitd ; peristomate subincras- 

 sato, intus valide albo-labiato, marginibus parallelis, dextro 

 breviter expanso, medio subdentato, columellari dilatato, piano, 

 rejlexo. 



Long. 23, diam. 11 mill.; ap. (c. perist.) 13 mill, longa, 8 lata. 

 Hab. in insula Navigatorum. 



