MOLLTTSCA OP THE ' CHALLENGER ' EXPEDITION. 323 



5. Ctlichna eeticttlata, n. sp. 



St. 186. Sept. 8, 1874. Lat. 10° 30' S., long. 142° 18' E. 

 Wednesday Island, off Caj)e York. 8 fms. Coral-sand. 



St. 187. Sept. 9, 1874. Lat. 10° 36' S., long. 141° 55' E. 

 Near Cape York, North Australia. 6 fms. Coral-sand. 



Shell. — Small, oblong to subcylindrical, harshly reticulated, 

 white, with a narrow scarcely curved mouthy a lip produced poste- 

 riorly, an oblique perforated top, a subpatulous direct and oblique 

 pillar-lip reverted on a narrow umbilicus. Sculpture^ Longi- 

 tudinals — the whole surface is scored with strong rounded 

 furrows, which follow the lines of growth and are parted by 

 interstices about once and a half their width. Spirals — similar 

 to the longitudinals, but rather stronger and further aj)art, are 

 spiral furrows, the intersection of which with the longitudinals 

 cuts the surface into square reticulations. Colour translucent 

 white. Mouth long and narrow, widening very little in front, 

 curved a very little throughout its whole length. Outer lip 

 rises above the top, bending a little in toward the perforation ; 

 in direction it is slightly curved throughout : its edge retreats 

 somewhat above, in the middle, and in front. Top is small, 

 oblique, with a slightly expressed, narrowish, thickened, harshly 

 radiatingly scored rim, within which is a funnel-shaped perforation. 

 Inner lip : a thickish glaze crosses the well-arched body and runs 

 out on the slightly patulous, direct, oblique, prominent, and 

 narrow-edged pillar, behind which and half covered by it is a 

 furrow running up into the umbilicus. L. O'll. B. 0"05. B. of 

 mouth at same place, 0*009. 



This is a remarkable species, with very exceptional sculpture. 

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

 impossible to say if the spire be visible or not. 



6. Cylichna stjbeeticulata, n. sp. 



St. 187. Sept. 9, 1874. Lat. 10° 36' S., long. 141° 55' E. 

 Near Cape York, North Australia. 6 fms. Coral-sand. 



Shell. — Small, oblong, subreticulated, white, with a narrow 

 curved 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 



