﻿ANCYLUS.— rLATE III. 



Species 23. (Mus. Brit.) 



AncvI.US MOFICAXDI. Anc. trstd CUl'Jl'sta, CODqVCf^a, 

 cjninj.it.l frrrngined, opacd, /«/».-' snhri'sr,! ; ,h)rs;i 

 ilrrjiri, iiju're jiostice subcenlrali, hiti-ndHcr niih 



Moricand's Anctlus. Shell narrow, compressed, 

 elongated, ferruginous, opaque, pinkish inside ; 

 back sloped, apex posteriorh- subcentral, laterally 

 submarginal. 



D'Orbigny. Yoj. Amcr. Mcrid. T. V. p. 3.-.r.. 



Ancylus Baldensis. Moricand. 



Ancijlus Navicula. Spix. 



Hab. Lake Baril, Bahia. 



Species 24. (:\Ius. Brit.) 



AxfVLfS .TI.I.'iiIhKS. A„r. Irsid Jr/u-rsm, fnlrd, 

 rujiiatuii Iriniitrr sln'al,!, ,'l,,„,i,iln, piif^flrc siih- 

 coiitractd, dnrso Iciifh dt'cliri, iijiicc siihuciiiiiiiuitu, 

 subceiifrali. 



The hood- shaped Anctlus. Shell depres.sed, fulvous, 

 radiately finely striated, elongated, posteriorly 

 rather narrowed, back gently sloj)ed, apex 

 acuminated, subcentral. 



D'Orbigny. Amer. Merid. III. p. 3;:o. 



Hab. South America. 



Species 2.). (Mus. Brit.) 



AxcvLUS FILOSUS. Am;, tcstd ovatd, coiiicd, tomksimc 

 ."iriiitd. semi-pdlucidd, wfteo-fulvd, apicc postice et 

 luferaliter subceHtrali. 



The THiiEADED Anctlus. Shell ovate, conical, very 

 finely striated, semi-pellucid, rose-fulvous, apex 

 posteriorly and laterally subcentral. 



C0NE4D. Newl'reshvvaterSiiells. Haldeman's mono- 

 graph. 



ILd,. Alabama. 



Species 2r,. (Mus. Brit.) 

 Anctlus kadiatus. Ah,: fe.-<fd pared, albd, fr,int<- 

 U'-ldd, .■iiihrnin'cd, slri'!sfi?Hitis.<!iini!i radiafd, ovatd, 

 ai'tirr i^nhini'iii^ldtd, apice versus marginem post. 



h,trn,]ru, pn.hictO. 



The bated Ancylus. Shell small, white, translucid, 

 subconical, rayed with very fine stria?, ovate, 

 anteriorly rather narrowed, produced towards 

 the post-lateral margin. 



GuiLDixc. Zool. Journ. Vol. III. p. .:;36. 



IMj. St. Vincent. 



Species 27. (Mus. Brit.) 



Ancylus Havanensis. Anc. festd depressd, lonjinsculd, 

 pins'ficv subangiistatd, corned, intus subrosed ; apice 

 (ditH.<o, postice subcenirali, lateraliter submar- 

 ginaU. 



The Havana Ancylus. Shell depressed, rather long, 

 posteriorly rather narrow, homy, pinkish within ; 

 apex obtuse, posteriorly subcentral, laterally 

 snbmarginal. 



Pfeiffer. Bourg. Proc. Zool. Soc. 1853. 



Ilah. Cuba. 



Species 28. (Mus. Brit.) 

 Ancylus Beanii. Anc. testd parvd, corned, hvvigatd. 



nitrnti, de 



■■a, ovatd, latere dcxtrali recti I'lscidd ; 



diirsd ih'chrl, apiice obtiiso versus marginriii postico- 

 lati'ralcm vJeoato. 



Bean's Ancylus. Shell small, horny, smooth, shining, 

 depressed, ovate, right side rather straight ; back 

 sloped, apex obtuse, raised towards postero- 

 lateral margin. 



BouRGUiGNAT. Proc. Zool. Soc. 1853, p. 81. 



TIab. Guadaloune. 



Species 29. (:*Ius. Brit.) 



Anctlus OBLUiUUS. Anc testd parvd fusco-corned, 

 ohliqiid, pri'J'iuidd, subovatd, Iwvigatd, postice 

 paulij atteuuatd ; ajnce producto, ad marginem 

 piustico-lateralem extenso. 



The OBLIQUE Ancylus. Shell small, brownish horn, 

 oblique, deep, subovate, smooth, posteriorly a 

 little attenuated ; apex produced, extended to 

 the posterior-lateral margin. 



Bkoderip. Proc. Zool. Soc. 1832, p. 202. 



Hab. Chili. 



Species 30. (Mus. Brit.) 



Anctlus fuscus. Anc. testd aureo-fuscd, Imvigatd, 

 oblongd, intds fere albd, lateribus subeompiressis, 

 rectiiisculis ; dorso siibelevato, apice obtuso, later- 

 aliter et postice subcenirali. 



The brown Ancylus. Shell golden brown, smooth, 

 oblong, almost white within ; sides rather com- 

 pressed, rather straight ; back rather raised, 

 apex obtuse, laterally and posteriorly subcentral. 



Adams (C. B.). Bo.ston Journ. Kat. Hist. Vol. III., 

 p. 32;.. 



Hah. United States. 



