11 



in favour of its publication in the Transactions; which was or- 

 dered accordingly. 



Descriptions of these New Species were published in the Proceed- 

 ings of February, 1840. 



The same committee, to whom was also referred a paper 

 entitled "Continuation of Mr. Lea's paper on New Fresh Wa- 

 ter and Land Shells," reported in favour of its publication in the 

 Transactions of the Society; and it was ordered accordingly. 



In this paper Mr. Lea describes fifty-seven new species of the ge- 

 nus Melania. He notices the existence of numerous species distri- 

 buted over a wide geographical range, from the Columbia River to 

 the St. Lawrence; there being now about 117 species included in the 

 Fauna of the United States. 



This genus having become so extended, Mr. Lea felt the necessity 

 of making minor groupes, and has therefore proposed nine sections. 

 1 The Smooth. 2 The Plicate. 3 The Carinate. 4 The Sulcate. 

 5 The Striate. 6 The Tuberculate. 7 The Granulate. 8 The 

 Cancellate. 9 The Spinose. 



Section 1. — Smooth Melanije. 



Melania Hildrethiana. Test&, fusiformi, subcrassa, lasvi, cornea ; spira 

 brevi, mucronata ; suturis valde irnpressis; anfractibus quinis, convexis; aper- 

 tura magna, ovata, inferne angulata, vel alba vel purpurea. Hab. Ohio River, 

 near Marietta. — Dr. Hildretk. 



Melania castanca. Testa clavasformi, subtenui, Isevi, tenebroso-castanea ; 

 spira elevata, prope apicem carinata; snturis parvis; anfractibus octonis, con- 

 vexiusculis ; apertura parva, elliptica, purpurea. Hab. Maury County, Tenn. 

 Mr. Dutton. 



Melania Icevigata. Testa obtuso-conica, subtenui, Isevi, nitida, luteola; spira 

 breviuscula, prope apicem carinata; suturis linearibus; anfractibus septenis, 

 subconvexis; apertura sub-grandi, elliptica; inferne angulata, albida. Hab. 

 Alabama River, at Claiborne. — Judge Tail. 



Melania Kirtlandiana. Testa acuto-conica, sub-crassa, lasvi, nitida, cornea ; 

 spira elevata, prope apicem carinata ; suturis irnpressis ; anfractibus novenis, 

 subconvexis; apertura parva, elliptica, albida. Hab. Richmond, Indiana; 

 Duck Creek, near Cincinnati; and Miami, Ohio. — T. G. Lea. Little Miami, 

 Dr. Warder. 



Melania Taitiana. Testa conoidea, subtenui, leevi, nitida, cornea ; spira de- 

 cisa, ad apicem carinata; suturis irnpressis; anfractibus subconvexis; apertura 

 parva, elliptica, inferne subangulata, albida. Hab. Alabama River, at Clai- 

 borne. — Judge Tait. 



Melania dubia. Testa conoidea, subtenui, leevi, cornea; spira subelevata ; 

 suturis linearibus ; anfractibus septenis, subconvexis ; apertura elliptica, 

 parva, inferne subangulata, albida. Hab. Tenn. — Dr. Troost. 



