ATTUIA. ins. ! 



cles were extended radially from tin- head, somewhat like those 

 of a sea anemone; but each pair had its definite and different 

 direction, which was constantly maintained: thus one pair of 

 tentacle^ was held pointing directly downwards, two other pairs, 

 situate just before and hehind the eyes, were held projecting 

 obliqui-Iy out wards and forwards, and backwards respectively, as 

 if to protect the organs of ^i^ht."' 



N. STKNOMI'IIAI.I s. Sowb. IM. ( .li>. fliT- f)0!. 



Shell like N. /'o////>////'>. but very narrowly nmbilicated. 



Knttf.rn ArcJiipe.l, KJO. 



I scarcely think this deserves to he separated from A', /'nm- 

 i>iliii.<<: the .very narrow umbilicus is exposed simply because the 

 callous deposit has not spread sullicient ly to cover it ; tin 

 no excava 1 ion around the umbilical region, as in the following 

 species. 



N. M M'ltoMlMlAI, US. Sowb. PL ( . ( .l. li<r. .Ml). 



Umbilical region excavated, but with rounde*! margin; umbili- 

 cus wide, rxposiuo- the whorls. 



.\-v/- < ',ij,-iliini . 



N. IMIUUCATI s. Lis'u'r. PL ( .i ( ,). liii 1 . .">! I. 



Surface smooth to spirally striale; umbilical region wide, 

 angularly excavated, umbilicus wide, showing all ilu' whorls. 



Solomon Islands, New Irelanc. 



The stria- arc not conslanl ; I have therefore reunited with 

 this ^pecie- N. 8CrobicidatU8 of Dillwyn and (Joiild and A". jn>r- 

 /oruliia. Conrad. 



Suligonus Aturia, Hronn. 



Sutures of septa with a deep lateral lolie ; siphuncle on the 

 concave or inner side of the shell, laru'e, continuous, like a suc- 

 cession of funnels. 



Kour species. Kocene. N. AiiH'rii'ti ; /'Jurn/H- ; India. 

 A. ZICZAC, Shy. PI. tS, fiii>. ;,()-_'. ;,u:; a. Kocene. /,'y/V />//. 



mi." Discites, M<-< ,,\. 



Whorls all expose.] ; l :l st cliamber -omet imes producecl. 

 Five species. L. Silurian t'arb. 



* Mosrl\, N-.trx l.y :i Naturalist <>n tli.- Challenger, -Jin;. 



