from New Guinea and the Solomon Islands. 419 



Helix [Acavus) coraliolabris. (PI. XV. fig. 4.) 



Testa elevate conica, imperforata, alba, labris intus purpureo-fuscis 

 ad marginem saturate riifis instructa ; aiafractus 5|, convexiusculi, 

 oblique rugose et cont'ertim striati, inerementique lineis flexuosis 

 Bculpti, ultimus in medio obtuse angulatus, inferne vix convexus, 

 antice breviter descendeus, pone medium labri leviter compla- 

 natus ; apertura oblique irregulariter subquadrangularis, intus 

 alba ; peristoma paulo iucrassatum et expausum, breviter reflexum, 

 margine exteriore paulo supra medium obtuse angulato ; columella 

 late dilatata appressa, complanata, margine aperturam versus 

 lilacea, superne callo nigro-fusco labro juncta. 



Diam. max. 32 millim., min. 25, alt. 34. 

 H(ib. Russell Island, New Guinea. 



This species is so well defined by the remarkable contrast 

 of the colour of the peristome with the white tint of the rest 

 of the shell that it will readily be recognized. The edge of 

 the aperture is thickened and bright coral-red, and this, both 

 within and without, is rather deeply bordered, especially 

 within, with purple-brown. 



Helix [Acavus) brumeriensis, Forbes. 



This species was originally described from a unique speci- 

 men (now in the British Museum) collected by Macgillivray 

 at Brumer Island. The figures both in the ' Voyage of the 

 Rattlesnake ' and in Reeve's ' Conchologia Iconica ' show it 

 to be a small specimen in comparison with others now received 

 from Mr. Brazier, which were collected on trees and bushes 

 at Millport Harbour, near Amazon Bay, British New Guinea. 

 The largest of these has a greatest diameter of 38 millim., 

 and is 33 in height, whilst the type is only 28 in width and 

 24 high. 



All of Mr. Brazier's specimens are also more conically 

 elevated, have a more broadly dilated black columellar margin 

 to the peristome, and the callus connecting the extremities is 

 also more developed and jet-black. Several of them show 

 indications over the entire surface of a peculiar cross-hatching 

 of short lines of a pale dirty yellowish tint. The aperture in 

 some specimens is tinted with very pale rose, in others it is 

 white. 



Another series of three specimens from " an island east of 

 New Guinea " illustrates three different stages of growth. 

 The youngest example, consisting of four whorls, is almost 

 entirely of a light corneous tint, except towards the lip, wiiere 

 it becomes more opake white ; it is also very thin and 

 narrowly umbilicated. The oldest and mature specimen is 



