fiU HIMA. 



whorl, the other near the canal at the base, whorls rather flattened, 



ribbed to the base in front and not more than half-way down 

 behind, raised into blunt nodules at the sutures, aperture semi- 

 Innate, colinnelhi thickened but not spreading, tubercular, outer 

 lip very thick, with a, thin edge near the aperture ; throat with 

 rather strong and somewhat distant ridges, canal very short, 

 stained on each side of the base with brown. This may be only 

 a variety of that interminable shell. X. inrruxxnta. Mull., but I 

 have not seen any varieties that are likely to connect them. 

 The above is Marraf's description : no figure, dimensions or 



locality. 



X. AUIA. Say. 



Shell white. L. -4."). lat. :> incli. 



Hoit.f/iern U<m*t of E. Florida, West Lulir.x. 



The sculpture of this species is said to be similar to that of 

 N. incraxxald , with which Say compares it. It has not been 

 identified by later investigators, rnfignred. 



N. TKNKLLA, HoCVC. 1*1. 15, figs. L>C,S. ~11\\. 



Semitransparent orange, tinned with rose towards the apex, 

 transversely grooved. Longitudinally llexnonsly ribbed, aperture 



small, columella callous, lip thickly varicose, varix white. 



Length, ."> incli. 



Caxcuen />"//, I'm-fii'/"!. 



Possibly a variety of X. ?'/?r/v/xxtf/r/. var. />//////*. which it 

 a])j)ears to connect with'tlie next species. 



N. Covhuwiisi*. Thorpe, apj)ears to be an unpublished species. 

 although alluded to by Mr. Marrat : s|)ecimens under that name 

 received from Mr. Sylvanns llanley. are l>efore me they do not 

 (litter essentially from the li'inv of X. h'-nrllu. lieeve. The 

 description of X. (ir<n>nlt. Marrat ( fiir. -JTH ). from \V. Africa, 

 agrees very well with A", h-nrllu. 

 N. DKSHAYKSII. Drouet. IM. If), iig. r>i;.. 



Violaceous, with brown n-volving lines. Lenjilh. 1 ."> mill. 



, 

 See remark under preceding species. 



N. VEKSICOLOK, (\ \\. Ad. IM. If), tigs. 270-:>7:>. L>7f). 



Yellowish brown, lower ])art of body-whorl and sutures 



usually chestnut-colored. Length. 13 mill. 



Panama to 



