70 



2. An Enumeration of species of recent Shells, received 

 BY W. J. Hamilton, Esq., from Borneo, in November 

 1850, with Descriptions of the new Species. By W. 

 Metcalfe. 



1 . Helix Brookei, Adams and Reeve, Zoology of the Voyage of 

 the Samarang, Mollusca, p. 60. pi. 15. fig. 4 a, b. 



2. Helix vittata, Adams and Reeve, Zool. of the Samarang, 

 Mollusca, p. 60. pi. 15. fig. 7 a, b, c. 



This species, having been prenously described by Mr. Benson, in 

 the ' Magazine of Natural History,' under the name of H. reglis, 

 ought to retain that name. 



In addition to the variety figured in the Mollusca of the Samarang, 

 Mr. Hamilton received two other varieties, in which the pale green 

 bands are wanting, the brown colour more or less predomuiating, with 

 bands of yellowish brown, and a brown circle surrounding the um- 

 bilicus. 



3. Helix Schumacheriana, Pfeiffer. 



4. Helix resplendens, Philippi in Zeitschr. f. Malak. 1846, 

 p. 192. 



5. Helix nasuta, nobis. H. testa subdiscoided, miistrorsd, 

 carinatd, anguste perforata, tenuissimd, lineis incrementi et 

 spiralibus confertis subtilissime decussatd, pellucidd, hyalind ; 

 lined anyustd pallide brunned ad carinam ornatd ; spird sub- 

 conicd ; anfractibus h\ planulatis, idtimo acutissime carinato, 

 subtus nitescente ; aperturd subrhomboided, ad angidum exte- 

 rior em valde productd et coarctatd; peristomate simplici, tenui, 

 margine superiore vix rejlexo, basali antice rejlexiore, umbili- 

 cum subtegente. 



Loug. ly^o ; lat. 1-Jg. ; alt. ^ unc. 



This elegant species is covered with a thin epidermis, of a pale 

 straw colour, under which the shell is mUky white. It bears some 

 analogy to H. Tayloriana (Adams and Reeve, Zool. of the Sama- 

 rang, Mollusca, pi. 15. fig. 2 a, b), but the projection at the extre- 

 mity of the aperture is much more acute, and the shell is of a more 

 gelatmous texture : it differs also in being sinistral. 



6. Helix glutinosa, nobis. H. testa orbiculato-convexd, an- 

 guste perforatd, tenui, nitidissimd, diaphand, pallide brunned, 

 carinatd; supra carinam fused, infraque lined angustd flaves- 

 cente, ornatd; spird conoided, obtusd; anfractibus 5 pamm 

 convexis ; ad carinam supra infraque lined impressd circulari, 

 striisque numerosissimis transversis notatd ; peristomate sim- 

 plici, acuto, margine columellari vix reflexo. 



Long. 1 J^ ; lat. 1 ; alt. -^-^ imc. 



A bright shell, resembling a thin film of glue, with a keel of a 

 darker shade ; slightly indented above and below the k^el, the in- 



