22 ON SOME NEW MARINE SHELLS, 



fathoms in sandy mud. JSfassa Jacfomiana Kiener, is often 

 pellucid but much larger than this shell. JVassa rufocincta Adams, 

 does not appear to me to differ from N. compacta. N. fasciata 

 Lam, is the largest on the southern coast, and is uncommon in 

 all Tropical Australia, except the west. It is very conspicuously 

 granular. N. pauper at a Lam, is a little smaller but a stouter 

 and more squat shell with whorls obsoletely granular. 



Clancultts tjndatoides, PI. 4, figs. 7, 7a. 



C. t. turbinato-conoidca, parva, solidiuscula, opaca, rufo-rosea, 

 indistincte purpurea maculata; anfr. 5^, planatis, rapide crescentibus, 

 infra marginatis, 6 serie granulorum cingulatis ; sutura coronata, late 

 canaliculata ; granulis infra parvulis, supcrne gradatim major ilus ; 

 peripherics tesselata,2 major ibus, cingulis granulorum marginatis ; basi 

 planata, 8 lineis spiralibus, granulosis, rotundatis, roseis omata ; 

 apertura rhomboidea, labro incrassato, intus lirato; columella obtuse 

 bituberculato ; umbilico angusto, albo. Alt. et diam. 10. mil. 



Shell turbinately conoid, rather small, somewhat solid, opaque, 

 reddish rose with indistinct purple spots; whorls 5£, flat, increasing 

 rapidly, margined below, girdled with six series of rounded 

 granules of which the lowest line is the smallest and increasing 

 gradually in size to the suture, which is coronate and broadly 

 canaliculate. The base is flattened, ornamented with 8 spiral 

 lines of rounded rose colored granules. Aperture rhomboid, with 

 a thickened labrum, which is lirate inside ; columella with two 

 obtuse, blunt tubercles above and below and intermediate small 

 obsolete teeth. Umbilicus narrow, white, with a rather conspicu- 

 ous white margin. 



In shape and appearance this shell is a little like C. undatus 

 Lam., but is saialler and the whorls flat. The following is a 

 synopsis of the Port Jackson Clanculi. A. Large, more than 

 20 mil. high, C. maugeri. Less than 20 mil. : B. Shell thin and 

 acutely conical, whorls and base flat, C. omalompJialus. Shell solid 

 whorls rounded, stained a vivid green, C. clangoides. Whorls less 

 rounded, small, pale brown, C. gibbosus. 



