CYLICIINA. 317 



by it is a furrow running up into the umbilicus. Alt. O'll in,, 

 diani. 0*05. Mouth breadth at same place, 0*009 inch {Wats.). 



Wednesday Island, off Cape York, 8 fms., and near Cape Yorlcy 

 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 Watsou. PI. 30, %s. 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. 0056. Mouth breadth at 

 same place 0"013. 



West of Caj^e York, K. Australia, G fms. 



C. subreticulata Wats., Chall. Gastr. p. 668, pi. 50, f. 3. 



This species is very like Cylichna reticulata, but diffei-s from it in 

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

 broader and more 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.). 



