LIST OF CONTRIBUTORS. 95 



LeConte, John L. Continued. 



The geology of New Mexico. P '75, 267 



Report on insects introduced by means of the International 



Exposition. P 76, 267 



On Rocky Mountain locusts. P '77, 129 



Fragnienta entomologica. J I, 71 



An attempt to classify the longicorn Coleoptera of the part 



of America north of Mexico. J I, 311 ; II, 5, 99, 139 



— Synopsis of the species of Ptero&tichus Bon. and allied genera, 

 inhabiting temperate North America. J II, 225 



— ■ Synopsis of the Melolonthidas of the United States. J III, 225 



— Catalogue of Coleoptera of the regions adjacent to the bound- 



ary line between the "United States and Mexico. J IV, 9 

 Leeds, A. R. Exhibition of crystalline staffelite. P '70, 122 



On an interesting geological phenomenon near Philadelphia. 



P '70, 134 



On a fulgurite. P '74, 145 



On elevation of temperature in a lead mine. P '74, 145 



Leffman, Henry. Variations in leaves of Ailanthus glandulosa. 



P '74, 160 

 Leib, George C. Description of a new species of Fuligula. J viii, 



170 



Description of the nest and eggs of the Fulica americana and 



Anas discors. J viii, 203 ; P '41. 124 



Construction of the nictitating membrane of the eye. P '41, 2 



On Paras leucotis, a rectification. P '42, 140 



Leidy, Joseph. Notes taken on a visit to White Pond in Warren 

 County, New Jersey. P '45, 279 



On the vertebra, of a fossil Zeuglodon of Alabama. P '45. 292 



On the larva? of Aphides. P '46, 66 



Remarks upon the anatomy of the abdominal viscera of the 



sloth, Bradypus tridactylus Linnaeus. P '46, 72 



— — On the anatomy of Spectrum femoratum Say. P '46, 80 



Description of a new genus and species of Entozoa. P '46, 100 



On the mechanism which closes the membraneous wings 



of the genus Locusta. P '46, 104 



Remarks on Entozoa. P '46, 107 



On hairworms. P '46, 108 



On the situation of the olfactory sense in the terrestrial tribe 



of the gasteropodous Mollusca. P '46, 136 



On the fecundity of Cryptogamia. P '47. 195 



