﻿P L A N A X I S. 



Species 20. (ilus. Hanlej-.) 



AIS I'LANlCOSTATrS. I'hl. /rs/./ t riH-lnfnnni, ,1111,111,1, 



„i:,h;,fi,,,;l,,,;,h:i-,„;,},- t,-„„;h:,- n„i„f,; ;,„i,,i,i, 



in,,,.< .<,: 



,1,1 > 



,ii;„, 



guste ani/iiliitis: an/m;! j,,;,, 



infni m,',li,n„ .,/«,-»,-;xs/,„r' „„,j„l,dn ■ „,„',iHr,l 

 y„l.fri,j,„„;, ,;,h,„,,ll,! I„fr j,I,n„,f,!, ,;tlj„ i„,Mi,;, 

 ii„i.rnu„, l,tl,,:. ,„l „„n;ji„,'„, /,•»»/, ,■,;'„ „l„t„, 

 sHin'nie Jr^inv-Hi, iiitils liii.f ,h,utifunaihii.< st'iitcuij! 

 nnnixfo, ciiiiali postico angusto elonciato. 



The n.AT-RiBBED Planaxis. Shell trochus-shapcd, 

 large, soUd, brown, covered with a finely wrinkled 

 epidermis, girt with flat, broad ribs ; interstices 

 deep ; spire conical, whorls seven, narrowly an- 

 gular at the suture; suture deep; last large, 

 very obscurely angular below the middle ; aper- 

 ture subtrigonal, columella broadly flattened, 

 posterior callus very large, outer lip thin, crenu- 

 latedat the margin, depressed above, strengthened 

 within with seven tooth-like ridges ; posterior 

 canal narrow, elongated. 



Sowh-RiiY. Append. Tank. Cal. p. 13, 182.5. 



F!,iil,ixU rawili,-n.hxt,i. Duval. 



Pl,ni,u-i.<! '•irciiiiila. Lessen. 



Htih. Galapagos Island and Panama. 



Species '27. (iMus. Hanley.) 



PLANAXr.'^ TENUIS. I'l,'. /'>7./' /.'„/-/, ,h,„,j,lt,l . jwl,'/,!, 



s,',„:,„ihiri,i',, „ih;,},;. i;„.,\- ,-„h,-;^ j,., ,„■;■< ,i;.<i,n,. 



,;,„,;:.,;ns,-„li,, ,,,n-alit,r l.-rit,-r s,il,,it;s. „lti,i,0 

 ^h„,,,„h,. ;„lW, ,;,i;,lr s„l.;,l,, ,-t ,:,■„!, -n;:,^,,: a,„',-- 

 t„r.! I,,;,-;,' „,„/„..[,!, h,l„v t,:,,,,/, ,:,i]],, ,;,,i„li,pie 

 p.,sti,:i. u„ni.: 

 The thin Planaxis. Shell thin, elongated, polished, 

 semipellncid, whitish, girt with few distant 

 red lines : spire elongated : whorls eight, rather 



convex, spirally lightly grooved, last elongated, 

 strongly grooved and ventricose below the middle, 

 aperture short, narrow, outer lip thin, no posterior 

 callus or canal. 

 Smith. Proc. Zool. Soc. LS72. p. 45. 

 .l[„b. ? 



28. (Mus. Brifc.) 



Pr.AXAX 



rs INEPTUS. Pla.testd fared, fjalUilks 

 uni .^„fi,ram rvhro llneatil ^.nntHtci 



■'"}"'" "'I 



.<l,ir,! ,h,i,,jal,;, ,:i,i/,;„-lil,i(.<:s,'i.ln,is, ,;,„r,:,;', 



,ilti,„„ ,;:i,tr;,;,so. „„;li,, hili.iifnt,, ■ „j„'rt„,; 



!<al„;,tu„d,i. 



The unimportant Planaxis. Shell small, vei 

 fulvous, with a red line above the suture, s 

 grooved ; sjjire elongated, whorls seven, 

 convex ; last ventricose, with two lines 

 middle ; aperture short, rather rounded 



Gould. (Lwjjt,,.) Proc. Boston. Soc. Nat. Hist 



Huh. Kikaia Bay. 



l,;,t,; : 



■y pair 

 pirally 

 rather 

 in the 



Species 29. (Fig. „, h, Mus. Brit.) 

 Planaxis zonatus. Fla. f,:<t,l i„u;;l ju.lif,!, .<,,Ji,h!, 



„JI,;,ld. ,„i„;, .„t„,;-,,„ ,t „„,!,■„ ;„f,-..,,.,' ,_n,f,;n- 

 hU H]ti,„i ln„d r,d,r,i ,-iu,:td ; „„j);„:i;h„s s,j,tv,.ls, 

 idtiiii,! suhvcntrieoso; cqieiiard lata, hrevi; hihi;> 

 jiroff marr/inem incrassato, di-uticidato. 



The banded Plan.^xis. Shell small, polished, solid, 

 whitish, girt with a red line above the suture and 

 in the middle and below the middle of the last 

 whorl ; whorls seven, last rather ventricose ; aper- 

 ture broad, short ; outer lip thickened near the 

 margin, denticulated. 



A. AcAMS. Proc. Zool. Soc. 18-")1, p. 271. 



H,dj. Calapan, Philippines. 



Species oO. (Fio-. 



;AXI:< SaVIH.VYI. 11,1. 



tnx'hiforiiti, iufra „i, 



<t. h, Mus. Hanley.) 

 '«•/,; „t,irind, cmssii. b 

 j;,,m sahan.jnlai,1, , 



