CYLICHNA. 317 



by it is a furrow running up into the umbilicus. Alt. Oil in., 

 din.ni. 0*05. Mouth breadth at same place, 0*009 inch (Wats.). 



Wnlnesday Island, off Cape York, 8 fms., and near Cape York, 

 N. Australia, 6 fms. 



C. reticulata WATS., Chall. Rep. Gastr. p. 667, pi. 50, f. 2. 



This is a remarkable species, with very exceptional sculpture. 

 The apical pore is so choked with impacted sand that it is impossi- 

 ble to say whether the spire be visible or not (Wats.). 



C. SUBRETICULATA Watson. PI. 30, figs. 8, 9. 



Shell small, oblong, subreticulated, white, with a narrow covered 

 mouth, a lip slightly produced posteriorly, an oblique perforated 

 top, a short patulous subtwisted pillar, round whose base is a slight 

 fold, and whose edge is appressed. Sculpture : Longitudinals 

 there are irregular and not strong lines of growth. Spirals there 

 are coarse, but feeble, rather remote furrows which cover the whole 

 surface. Colour translucent white. Mouth curved, a little broader 

 above and below than in the middle. Outer lip rises very little 

 above the top, bending out, a very little yet at once, from the api- 

 cal pore ; it is strongly curved throughout. Top is small, slightly 

 oblique, with a scarcely definite, feebly scored rim, within which is 

 a funnel-shaped perforation. Inner lip : a thin glaze, with an ir- 

 regular edge, spreads across the body, which is well rounded ; 

 round the top of the oblique pillar is a feeble furrow and fold ; the 

 lip edge is appressed, and has behind it a very slight depression, 

 but no umbilicus. Alt. 0'106 in., diam. 0'056. Mouth breadth at 

 same place 0*013. 



West of Cape York, N. Australia, 6 fms. 



C. subretieulata WATS., Chall. Gastr. p. 668, pi. 50, f. 3. 



This species is very like Cylichna reticulata, but differs from it in 

 that the shell is broader in proportion to length ; the mouth is 

 broader and rc>,re curved ; the strongly reticulated sculpture is ab- 

 sent, what there is being much feebler and less regular, this is espe- 

 cially the case with the longitudinal furrows ; the outer lip rises 

 less high behind and does not lean in at all to the perforation ; the 

 edge of the top is less oblique ; the pillar lip has a fold at its base, 

 and the lip edge is reflected and appressed, and has no umbilicus 

 behind it ( Wats.). 



