L I V A 



Species S. (Fie;.-?, h. d, Mus. Stoere ; Fig. i-. 

 Mus. Cmuing.) 



Oijv.v iiiiSANS. Oliv. testa, elnngato-cyl'mdra-ced, suhan- 

 ffiista, spirit nunc acmninato-cxsertd, nunc brevi, phis 

 minus callosd, plicis columellaribiia iiiliTdii„i snljemni- 

 dis ; alhdvel carneolo-uVid, a/r/i/if: /i/miri/mx /tiirpureo- 

 olivaceis, viridi luteoqiw nebulaiia, uculc nndatis, plus 

 minus iifasciatim reticulatis, nitide pictd, nonnnuquam 

 luteo-fusco nut nigrieante omnino indutd, anfmctuum 

 margine spirali fusco pimclalo, nilii,iii-lld puUidi ear- 

 mold, api'rturce fauce cirriili"i,-i'iili--iill,ii . 



The iridescent Olive. Shell elonuately cvlimlrical, 

 rather narrow, spire sometimes aeumiuately exserted, 

 sometimes short and more or less eallous, eolumellar 

 plaits not unfrequently rather faint; white or oarnelion- 

 white, neatly painted with purple-olive linear streaks, 

 clouded with green and yellow, sharply waved, and 

 more or less reticulately two-banded, sometimes alto- 

 gether covered with yellow-brown or blaekisii, spiral 

 edge of the whorls brown-dotted, columella pale 

 carnelion, interior of the aperture bluish-white. 



Lamarck, Anim. sans vert. (Deshayes' edit.) vol. x. p. IJlO. 



llah. Mauritius. 



This appears to be a very well defined >peeies, allied to 

 0. tremulinu, but uniformly of smaller size and narrower. 

 The spire, mostly exserted, is sometimes short, buried 

 uearly to the apex, as in Fig. n, by a callous depo.-iit of 

 enamel. The painting is distributed in a scattered in- 

 terrupted zigzag style, rarely or never blotched, though 

 mostly aggregated in bands about the middle and posterior 

 portion of the shell. In Fig. b and c the streaks are dark 

 olive, clouded, iris-like, with bhie-grcen aiul yellow upon 

 a warm carnelion ground, in Fig. u the shell is pure 



white, and the painting simple blue-purple. In Fig. d the 

 pattern is entirely overlaid with a uniform yellow-brown 

 coat, which in some specimens is nearer black. 



jpecies 



(Fig. a, c, Mus. Steere ; Fig. 6, 

 Mus. Cuming.) 

 Omva TEXI'ILIXA. OVw. U'sld oMongo-cijUndruced, Uiti- 

 iisnihi, crrism, spird breoiitsciild, anfracta uUimo in 

 v((lhmlii(i' lid e.rtn'milatem podicam npi'rhiric prodnrto, 

 pliris culuiiielliiribiis forliuscuUs ; canimlu-ulbd, pilnr- 

 tis li/ifixi/iii- piniclorum nigris, angt'/,ifii-rrfir/</ij/is, 

 iiiterditiii subpromiscuis, cinereo-nebidalia, plui niinu.t 

 saturate bifasciatis, undique pictd, columelldd apertiine 

 fauce vinlde carneolis. 

 TuE fine-textile Olive. Shell oblong-cylindrical, 

 rather broad, thick, spire rather short, last whorl 

 produced into a callosity at the posterior end of the 

 apertm-e, eolumellar plaits rather strong ; carnelioii- 

 white, painted throughout with black dots and lines 

 of dots, angidarly reticulated, sometimes rather pro- 

 miscuous, ash-clouded, more or less darkly aggregated 

 into two bands, columella and interior of the aper- 

 ture bright carnelion. 

 Lamarck, Anim. sans vert. (Deshayes' eilit.) vol. x. p. BOG. 

 Hub. Islands of Tieao and Mindanao, Philippines (sandy 

 mud in deep water) ; Cuming. 

 There is perhaps less variety in this species than in any 

 other of the genus, the pattern consisting always of an 

 angular ash-clouded net-work of dark dots, sometimes 

 very regular and close-set, but more frequently promis- 

 cuous and confused in its arrangement. The shell is 

 generally of large size, thick, and rather broad, the last 

 whorl rising upon the spire into a callosity. 



August, LS50. 



