I.K.t IS 



bordered with white on (lie right .-id", :is though the pigment liad been 

 withheld :i short time :md then poured OUt copiously. Sometimes all 

 of these markings .-in- sub-obsolete, as in the chestnut- colored speci- 

 men shown in lig. 10 of plate 34. Then- is almost always more m- 

 less green in the cuticle on the latter part of tin- la>t whorl, though 

 yellowish-chestnut occasionally replaces it. 



Besides the pattern of coloring described above, more heavily 

 striped shells occur (pi. 33, fig. G), in which the occasional stripes of 

 the ordinary form are emphasized ami multiplied, arc either straight 

 or xig/.ag, and the shell is usually quite large. Fig. 7 of pi. 177 of 

 the Conchologia Systematic^, and fig. IGHoof the Conchologia Iconica 

 represent these richly colored specimens, and Dr. Hidalgo, in his 

 excellent volume on the mollusks of the Spanish Expedition, has de- 

 scribed similar individuals from Xapo, Ecuador, collected by Sr. 

 Marline/. As in the ordinary form, there is more or less green on 

 the latter half of the last whorl. 



Fig. of plate 34 represents a rather small specimen, in which a 

 reddish band, more or less obscured in places by the overlying cuti- 

 cle, revolves above the periphery and just below the articulated dot- 

 band of the spire ; the earlier whorls have broad, angular, brown 

 stripes ; the first half whorl is reddish brown, the succeeding 1-?? 

 whorls similar with a white crown. The last whorl is distinctly 

 though obtusely singular in front, and is >'.reaked with bright green 

 cuticle, peculiarly spotted in places with white. This shell may be 

 referable to the form Im-nixi'mitm. but that seems to be only a wesikly 

 marked variety of L. rt'i/nlis. 



A young shell (pi. 3o, fig. 19) has sin articulated or dotted hand at 

 the rather acutely keeled periphery, another above the middle of the 

 upper surface, and some light and dark streaks below the >uture ; 

 ju-t below the periphery there is a continuous dark chestnut band, 

 and two more, separated by a cream-colon d space with faint purplish 

 streaks, are upon the base. The peripheral angle is hardly acute 

 enough in the figure. I )'( Jrhigny's pi. I'M, tig. ?>, shmv> a similsir 

 shell. 



Dextral form, (pi. :5i;,/, lig>. 1's, -J'.i ; pi. U3, fig. 3). Similar to 

 the ordinary sinistral type, of which it probably is a lucre form rather 

 than a race. The specimens figured on pi. '.',\'HI are nearly denuded 

 of cuticle, \\hat remains showing the brownish or yello\\ i.-h-green 

 tint of the >inistral form. 



