524 SUCCINEA §. 5. 



drantes 3 longitudiuis adaequans; coluuiella arcuata, perspicue 

 plicata. — Long. /2, diam. '/4 poll. (G.) 



Succinea rusticana Gould 1846. Exped. shells p. 31. 

 Habitat Oregon. 



36. S. aperta Lea. t^^-^^A^^^' 



T. subrotunda, tenuis, flavescens, laevis; spira brevissima ; 

 anfr. 2, ultimus grandissimus; apertura latissima. — Diam. 0.4, 

 long. 0,5 poll. (L.) — Long. 13, diam. 9V2 mill. Ap. 11% mill. 

 longa, medio 8 '/2 lata. (ex ic.) 



Succinea aperta Lea obs. IL p. 101. t. 23. f. 107. 

 Habitat ad fluvium Columbia-River. 



Obs. Persimilis S. depressae Rang Nr. 66. 



37. S. campestris Say./^','C/A//,/iji'i ^'^yX^ - • 

 /••" y.', ^!^. ^///, ^T^^. • 

 T. ovata, perfragilis, pallide flava, lineis opacis albis et vi- 



treis irregulariter alternantibus; anfr. 3 vix obliqui. — Long. vix 



y^, lat. 720 polL (Say.) — ColL Nr. 8? 



Succinea campestris Say in Journ. acad. Philad. I. P. 1. p. 28L 



— — Beck ind. p. 98. N. 3. 



— — GowWreport p. 195. f. 126. *) 



— — Pfr. Symb. IL p. 56. 



Helix campestris (Cochlohydra) Fer. pr. 12. Hist. t. 11. f. 12. 

 Habitat in America boreali: Massachusetts. 



Obs. «Affinis S. ovali Say; differt testa magis robusla; minus elongata, 

 crassiore, minus fragili, sutura multo minus obliqua.» (Say.) — «Anfractus re- 

 gulariter inflati; apertura magis ovalis, quam in S. ovali, superne et inferne 

 fere regulariter rotundata. » ( Gould. ) 



.38. S. ovalis Sa;^-^'^':'^^:''^'^ 

 T. subovata, pallide flava, diaphana, pertenuis et fragihs; 

 anfr. fere 3 obhqui, ultimus amplissimus; spira parvula, promi- 

 nuia, obtusiuscula; apertura longitudinahter subovahs, lata; colu- 

 meUa valde angustata , ita ut a basi testae fere in apicem pei^- 

 spicere possis; cahus columellae fere nullus. (Say.) — Long. %o, 

 laL y^.), long. apert. '/20 poll. Divei^g. 561 (Gould.) — Coll. Nr. 9^C 

 Succinea ovalis Say in Nichols. Encycl. 



— — Say in Philad. journ. I. p. 1S. 



— — Desh. Enc. meth. IL p. 20. N. 2. 



— — Beck ind. p. 98. N. 1. 



*)T. ovata, tenuis, diaphana, pallide llava; anfr. 3 haud valde obliqui 

 perconvexi , ultimus amplissimus, turgidus; sutura profunda; a pertura subova 

 lis. — Long. % , lat. % poll. Diverg. 80 — 90". (Gould I. c. ) 



