70 
2. AN ENUMERATION OF SPECIES OF RECENT SHELLS, RECEIVED 
sy W. J. Hamiiton, Esa., rrom BorNEO, IN NOVEMBER 
1850, wirn DescRIPTIONS OF THE NEW Species. By W. 
METCALFE. 
1. Hextrx Brooker, Adams and Reeve, Zoology of the Voyage of 
the Samarang, Mollusca, p. 60. pl. 15. fig. 4 a, 6. 
2. Hexix virrata, Adams and Reeve, Zool. of the Samarang, 
Mollusea, p. 60. pl. 15. fig. 7 a, 4, ¢. 
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. Heirx ScHUMACHERIANA, Pfeiffer. 
4. HeLix RESPLENDENS, Philippi in Zeitschr. f. Malak. 1846, 
p. 192. 
y 5. Hewix nasuta, nobis. AH. testd subdiscoided, sinistrorsd, 
carinatd, angusté perforatd, tenuissimd, lineis incrementi et 
spiralibus confertis subtilissimée decussatd, pellucidd, hyalind ; 
lined angustd pallide brunned ad carinam ornatd; spird sub- 
conicd ; anfractibus 54 planulatis, ultimo acutissime carinato, 
subtus nitescente ; apertura subrhomboided, ad angulum exte- 
riorem valde productd et coarctatd; peristomate simplici, tenut, 
margine superiore via reflewo, basali anticé reflexiore, umbilt- 
cum subtegente. 
Long. 1,45; lat. 135; alt. , une. 
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, Mollusca, pl. 15. fig. 2 a, 6), but the projection at the extre- 
mity of the aperture is much more acute, and the shell is of a more 
gelatinous texture: it differs also in being sinistral. 
v 6. Hexix eiutrnosa, nobis. A. testd orbiculato-converd, an- 
gusté perforatd, tenui, nitidissimd, diaphand, pallidé brunned, 
carinatd ; supra carinam fused, infraque lined angustd flaves- 
cente, ornatd; spird conoided, obtusd; anfractibus 5 parum 
convexis ; ad carinam supra infraque lined impressd circulari, 
striisque numerosissimis transversis notatd ; peristomate sim- 
plict, acuto, margine columellari viz reflexo. 
Long. 14,; lat. 1; alt. =& une. 
A bright shell, resembling a thin film of glue, with a keel of a 
darker shade ; slightly indented above and below the keel, the in- 
