IH) L A r, K L LA 



Sp,. 



fF 



Mils. Sou,rl,v.) 



Dol.ABELLA RUMPHII. /)„/. I,:il,i xiihl ri,i„i„! , hnTiiini'nlii 

 medio convexd, diiliiv sii/,„,i,/rl„l,i, hcri.nihi ■ callo 

 fumido, noduUprn, xp'iralilvr sid,pli,;,li,, ^„/„-r dorsKiii 

 r.i'pa.so, super ,ianju,e>< u„i„e ml ter.,unna rrjlexo et 



l;iMiMUus's])„i,AUEi.LA. Shell sul)trigou;il,r;itli,T short, 

 middle convex, subangulav in front, sniootii ; callus 

 tumid, nodulilerous, sjiirally subplieated, expanded 

 over the hack, reflected and thickened over the mar- j 

 ;i^iiis as far as the back. I 



<:i:viF,i;, Aim. du Mus. vol. v. pi. 20. f. 1. I 



Dulabella .scapula (Mils. Brit.). I 



fhn.s vernicosa (Gmelin). 

 l./ii/a.r 1,1(1 riiia (linniphius). ' 



The.perinieMs „f ||„s shrli .xinhit so,,,.- variations of 

 '•''■"■"•l''|-. I'lit none „f theui an- s„ ,nnch rloii^ated i e 

 laterally or from the apical callus l„ the trrniiiml edge or ■ 

 outer lip, as are the other species. The \rr\ \onii"-''siie- • 

 eiinen represented (Fig. h) pr<-serves the sanie 'character. ' i 



!^peeies 4. (Jlns. Paris.) 

 l'"I.AnEI,L,V liCAUD.Vl'A. Dol . iesld U'mu, oldl,i„d, oh- 

 IniHjd, phnilnscidd, hevhjattl, aii,/„std ; ,.iar,/liw mipe- 

 non l,reel,,icido et recllmenU,, ad teruminm ohlmi 

 „„,,Hh,t„ ,. radio ,nhpla„alo, spirallter tenter plicato, 

 svy/.. dorsau, paidn e.epaa.o : .aarymUjm rejle.vk a„. 



Till.; TAILLESS HOLADELLA. Shell thiu, obliipie, oblong, 

 rather Hat, smooth, narrow; upper margin rather 

 short, straight, obtusely angular at the end ; callus 

 rather flat, spindly -liuhlly pli,.aled.a lidlc expanded 

 over the back ; re(l,-efei| edgi:,s nai'rou' 



Rank, Hist. Nat. ihs Aplys. p|."o f^ ^^ 



Hah. Society Islands. 



Tin. sheU is thinner and more ol,l„,ucly elongated than 

 U,dal.ellaR„.eplnl. The annual has no caudal process. 



Species 5. (Mus. I'aris.) 

 i 'GLABELLA Ter,.:midi. hat. lesld temm.,cM, ohliauh 

 elomiala, phuumcnld^ ,,.rm. apicem altennatd, vlx 

 arenala ; manjlne mjierlori breviaacalo ; ,„ar,jh„' ni- 

 Jerinn ehanjal,,, Uviter arcaato ; call,, ptnunlato. sal,- 

 depre.ss,,, /e/„„, e.ipaieso. 

 Te.emid's Dolabella. Shell rather thin, obliquely 

 elongated, rather iiat, attenuated towards the ■,pex' 

 I not much curved ; upper margin rather shorl ; lower 



I margin elongated, slightly arched ; callus llatteiied 



I rather depressed, thin, expanded. 



j Hang, Hist. Nat. Aplys. p. 48. pi. 3. f. i__3. 

 Jlab. Society Islands. 



l^ie most lengthened of all the species, excepting Do- 

 ' Mnla elo.,a(„. If. thin, with a rather -pateliilbrm 

 ! callus. 



I Species 0. (Pig. „, /,^ ^fus. Brit.) 



' I»()Labella Guayaquilens.s. Dot. leM parrd, ieH>U 



laid, obhngd, recllmculd, marybulms tenuibia ; dorw 



dnato ; callo pareo, mnjaxlo, tumido, super maryiue., 



Iiand ccdnmk .■ epiderwide pallhU yrlsed. 



The Guayaquil Dolabella. Shell small, thin, wide. 



Prr ""l;^'!'""''' "!'"" ""■ '"'"-'"' ■ '■Pi'lennis pale grey! 

 Jlab. Gnayaipul, 



A glance at th,. ligurc of the w.nng Jkdabrlta Rueiph,, 

 will be sufficient to explain the (iifference liet»e,ii ihe lu„ 

 species, and to show that the small shells IVuni (iuavaiinil 

 are not the young of D. RumpliiL ' 



Species not idcntitic 

 Dolabella Fitvdii.is Lamarek 



