42 SMITH : MARINE SHELLS FROM TORT ALFERD. 



descendens, ventrali fere parallelus : latus anticum angiiste rotiindatum, posti- 

 cum latins, ohlique curvatiim ; iiml ones parvi, acuti; lunula angiista, excavata; 

 pagina interna alba, radiatim fortiter sulcata, supra marginem dorsalem rufo 

 tincta. 



Longit. 7.5 millim., alt. 4.5, diam. 3. 



The hinge is normal, consisting of a single cardinal tooth in the right 

 valve and two in the left, with two laterals in each valve, whereof the anterior 

 in the right and the posterior in the left are a little stouter than the others. 



Hoehstetteria velaini, n.sp. 

 PI. iii, fig. 24. 



Testa parva, obliqna, tenuis, allia, lineis pellucidis in medio radiata, inaequi- 

 lateralis, nitida, convexa, increnienti lineis striata, supra latus posticum lira 

 tenui, ab nmbone uscjue ad marginem producta, instn eta ; latus anticum 

 obliquum, parum arcuatum. posticum leviter incurvattim ; uml)ones promin- 

 entes, incurvati ; linea cardinis crassa, fere recta, transversim striata, in medio 

 fossa ligamenti triangulari sculpta ; pagina interna marginil)us ventrali et 

 postico cren^latis. 



Longit. 3.5 millim., alt. 4, diam. 2.5. 



The slender lira on the posterior side runs down a shallow depression in 

 the valves, which causes the faint sinuation in the outline. Named after 

 the author of the genus. 



Hoehstetteria limoides, n.sp. 

 PI. iii, fig. 25. 



Testa minima, ovato-subpiriformis, alba, fere aequilateralis, radiatim tenuis- 

 sime costulata ; latus anticum oMique truncatum, leviter excavatum, posticum 

 curvatum ; uml>ones prominentes ; linea cardinis crassa, transversim striata, 

 in medio fossa ligamenti angusta o' 'licjua interruj ta, ad extremitatem posticam 

 infra dentibus lateralihus duobus tul erculiformilius instructa ; pagina interna 

 leviter radiatim sulcata, ad marginem tenuissime denticulata. 

 Longit. 2.6 millim., alt. 3.3, diam. 2. 

 As regards form and the radiating costae, this species has the appearance 

 externally of a minute Lima. 



Modiola tenerpima, n.sp. 

 PI. iii, fig. 26. 



Testa parva, oblonga tenuis, antice angustata, postice paulo dilatata, pallida, 

 purpureo tincta, maculata et lineata, lineis incrementi tenuissimis sculpta, 

 antice infra umhones sulcis 2 — 3 radiantibus ornata ; margo dorsi rectjs, 

 pulcherrime minute denticulatus, ventralis levissime incurvatus; pagina interna 

 margaritacea, lineis rufo-purpureis subundulatis variegata. 

 Longit. 13 millim., alt. 7, diam. 4.5. 



