112 LIST OF CONTRIBUTORS. 



Lepsius, Richard. Results of a journey into Ethiopia. P '45, 193 

 Lesley, Jos. P. On a haeniatitic geode. P '56, 299 



On crystallized lead. P '57, 173 



Of reserve drainage of uplands bordering the Ohio. P '58, 8 



On supposed fissures of crust. P '58, 9 



— — On supposed volcanic agencies. P '58, 9 



■ On conglomerate from Blossburg Mountain. P '58, 11 



• On lignite from Louisiana. m P '58, 14 



On chemical geology. P '60, 96 



On a boulder of gniess from Orange Co., N. Y. P '60, 97 



— On the geology of the White Mountains. P '60, 363 



On specimens of petroleum rock. P '64, 258 



Lesquereux, Leo. On fossil plants from the southwest. P 



'68, 148 

 LeSueur, Charles A. Description of six new species of the genus 

 Firola, observed by Messrs. LeSueur and Peron in the Mediter- 

 ranean Sea in the months of March and April, 1809. J i, 3 



Characters of a new genus, and descriptions of three new 



species upon which it is formed; discovered in the Atlantic 

 Ocean, in the months of March and April, 1816 latitude 22° 9'. 

 J i, 37. 



Description of three new species of the genus Raja. J i, 41 



A short description of five (supposed) new species of the 



genus Muraana, discovered by Mr. LeSueur in the year 1816. 

 J i, 81. 



— Description of two new species of the genus Cadus. J i, 83 



— Description of a new species of the genus Cyprinus. J i, 85 

 ■ An account of an American species of tortoise, not noticed 



in the systems. .1 i, 86 



— A new genus of fishes, of the order Abdominales, proposed 

 under the name of the Catostomus ; and the characters of this 

 genus, with those of its species. J i, 88, 102 



— Descriptions of four new species and two varieties of the 

 genus Hydrargira. .i i. 126 



— Observations on several species of the genus Actinia; illus- 



trated by figures, .i i, 149, 169 



— Descriptions of several new species of North American fishes. 



J i, 222 



- Observations on a new genus of fossil shells. J i, 310 

 — Descriptions of several new species of North American fishes. 

 j i, 359 



