LIMN M A, 



Species 7G. (Mus. ? Copied.) 



LlMN.HA DELICATA. Liiii. ttftd sti,l>fii.'"'fonm, subpd- 

 lucidd, corned, pallide roseo-lacted, spirdliter sub- 

 fasciatd ; spird elevatd, suhscalatd ; anfractibus 

 (jiMtuor, couvexis, subangulatis, anfractu ultimo 

 breidusculo, post columellam excavato ; aperitird 

 subquadratd, postice suhamjulatd, columeUd toHiid, 

 subrecurvd. 



The delicate Limx.e.\. Shell suM'asif'onn, siil.iiclliu'i(l, 

 horny, pale rose-milky, spindly slightly luindid, 

 spire elevated, slightly ladder-like ; whorls four, 

 convex, rather angular, last whorl rather sliort, 

 excavated behind the columella ; aperture siil>- 

 qiiadrate, posteriorly slightly angular; columella 

 tortuous, somewhat curved backwards. 



Say. Acad. Nat. Sci. 



Limnma Jilograna, Menke ? 



Hob. N. America. 



There is a delicacy about this shell, and a tendency 



to cross-banding in the colouring, tliat ini]iresses the 



eye with au appearance of distinctness from the n<>arest 



species. 



Species 77. (Fig. a, b, Mus. J5rit.) 



L1MN.EA BULI.MOIDES. Lini. testa jiarvd, ovdto-.uihpi/ra- 

 midatd, pallide corned, semipellucidd ; spird apcr- 

 turam longitudine aiquanti, anfractibus ttibus, 

 penvltimo suhinjlato ; apertwd pyriformi ; colu- 

 meUd tenui, rectiilsculd. 



The liULi.Mi's-LiKE LiMN^EA. Shell small, ovately sub- 

 pyramidal, pale horn, semipellucid ; spire equal- 

 ling the aperture in length, whorls three, the last 

 but one rather inflated; ai)erture pyriform ; 

 columella thin, rather straight. 



Lea. Kiister's Conchylien Cabinet. 



Hub. N. America. 



Species 78. (Fig. a, b, Mus. Brit.) 

 LlMN^A HU.\IILIS. Lim. testd pared, />i/rijhrmi, pal 

 dissimi corned, poslici' fulvesciiili ; spini aprrtiin 



longitudin, a./iia,,/;. aniwinald. a„/nivliJi,i.^ tiihiis 

 rotundis: aiijrarl,, ullii,,,, /»-.</ cohnm llam iimhili- 

 cato ; apertiird pared, uratd ; roliiiiiflld rr<-tiii.<ciild. 

 lahio externa ce(/ua/iter arcuato. 



The lowly Li.mn.ka. Shell small, pyrilovni, vrry pair 

 horn, posteriorly brownish ; spire ecpialling the 

 aperture in length, acuminated, whorls three, 

 rounded ; last whorl uinbilicated behind the 

 coluiuella ; aperture small, ovate; columella 

 rather straight, outer lip equally arched. 



Say. Haldeman's Monograph.';, pi. 4. 



LimncPM parra. Lea. 



Hub. New York. 



The body wliorl is shorter and more ventricosu in 



proportion to the spire than in Limncea innbilicata, 



and the whorl is more acuminated. 



Sjiecies 7'J. (Mus. ? Copitd.) 



Lijix.Ea E.\I>.\.N'sa. Li/n. tc.ttd suhfusifonni, pallidi 

 corned, subinjlatd; spird elevatd, anjractihiif quimjiif, 

 oblongo - injlatis, ])enultimo ventricosa ; anfnirtii 

 ultimo orato, siiprd, aperturam elevato, tiii/iidiii.vciilu; 

 aperturd auriformi, laid, infra atifractinit ultiiiium 

 anticii productd, columdld tortud, rectirrd ; labia 

 externo tenui, raldi expanso ; plied ralimuilai-i 

 crassd, va/iild. 

 The E.XPANDED Li.mnjsa. Shell subfusiform, pale horn, 

 subinflated ; spire elevated, whorls five, oblong- 

 inflated, the i)enultimate ventricose ; last whorl 

 ovate, raised above the aperture, rather tumid ; 

 aperture auriform, wide, produced in front below 

 the last -ivhorl, columella tortuous, recurved ; 

 outer lip thin, much expanded; columellar fold 

 thick, strong. 

 Haldeman. Monograph of Freshwater Shells of Xortli 



America. 

 Hab. North America. 



The two specimens figured in Haldeman's Monograph 

 differ somewhat in proportions, but .-igree inthe expanded 

 aperture and the backward curve of tlie anterior part. 



