^^iwl" ] I'lCtX-KEDINOS (»1 run NATM.NAh MlStlM. 317 



83 Tiltoaidci saiiguiuoleuta 1>iic1ua. 



OiM' imiiiatiiH' tVt'sh spt'cimt'ii. 

 Maiita. 



84 Trltonidea gemmata Cpr. 



()ii«* fii'Hli example of ordinary a<lult mzv, 

 Maiita. 



85 Tiitonidea pagodus Kvo. 



Ill tilts instaiici' iny (k'toniiiiiatioii retjts upoii a badly worn beai-li 

 sptH'iriitMi »»t what appears to be a very ilonj^'ateil heavy example ol' 

 the ab«)ve specieM. 



riiis lonn <loe.s uot=/ufii/(ttmiii llloe, as stated in Trxon's mono;;raph. 

 \ol. Ill, i». Jiij. 



Payta. 



86 Tiitonidea elegaus <«ruy. 



Tritonidfn inti'init K«*««ve. 



Two beaeh shells in bad eoniliiion. 

 I'ayta. 



87 Engiiia pulcbia liot«vt«. 



r- Kmijina Urtvinna C H. A<l. 



( )ne beach spe<'imen. 

 Panama. 



88 Engina carboiiaria ivi'ove. 



( )ne example. 

 Mant.i. 



The siii;,'le specimen lolU'cted by Dr. .Tones is an nniisnally solid 

 example of this npi'cies, wlii«h exhibits very considerable variation. 

 Ill some instances it is short, stumpy, and robnst : in others, more or 

 Ii ss elonjiati'd. Throu;;li inadvertence the late lb. (arpcnter, in 

 ni.ikin;; np the sets ol Ma/.atlan ami ramima shell.s tor the Smith 

 siMiian Instiintion, etc., some of which were distribnted years a^'o, 

 alieU'd Knifimi or SiMtniin /vrnniiiwum ^'larbtnKiriutH," and this has le«l 

 to ronsiderable confusion; and the distribution by others in the course 

 »t exchanges of the commoner /emiyincum as carhoiKirium has ex- 

 ti inli'd the error in many c(»llections. 



89 N.ian.i vcrsicoloi < M. A<1. 



Nnmcmus examples, 

 Payta: Panama. 



I>r. .lones's slu-lls exhibif fhr wi-ll known ami um.ii Kaiue \. inability 

 of this .species. 



90 Na«Ba complauata l'.>\\i- 

 Two examples. 

 l\inam.i. 



