Zoological Society. 67 



pure white ; wing-covers with rufous yellow margins, which form two 

 small bands ; lower parts white, on the sides tinted with brownish 

 rufous, and with broad black shaft-spots ; the middle of the throat, 

 belly and under tail-covers white ; tail black-brown, viith olive 

 margins. 



Head, 40 ; gape, 22 ; height of the bill, 7 ; breadth, 12 ; wing, 72 ; 

 tail, 55 ; tarsus, 18 ; middle toe, 15 mm. long. 



Lord Derby's collection. Brit. Mus. 



February 25, 1851.— R. H. Solly, Esq., F.R.S., in the Chair. 



An Enumeration of species of recent Shells, from Borneo, 

 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 previously 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 predominating, 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, sinistrorsd, 

 carinatd, anguste perforatd, temiissimd, lineis incrementi et 

 spiralibus confertis subtilissime decussatd, pellucidd, hyalind ; 

 tilled angustd pallide brunned ad carinam ornatd; spird sub- 

 conicd; anfractibiis 5^ planulatis, tdtimo aciitissime carinato, 

 siibtus niteseente ; aperturd subrhomboided, ad angulum exte- 

 riorem valde product d et coarctatd; peristomate simplici, tenui, 

 margine superiore vix rejlexo, basalt antice rejlexiore, umbili- 

 cmn subtegente. 



Long, l/o ; lat. l-jL ; alt. ^ unc. 



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

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

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

 rang, Molhisca, 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 

 gelatinous texture : it difl'ers also in being sinistral. 



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

 guste perforata, tenui, nitidissimd, diaphand, jialHde brimned, 

 carinatd; supra carinam fused, infraque lined angustd flares- 

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

 convexis ; ad carinam supra infraque lined impressd circulari, 



5* 



