490 



Leptoxis fnsca 127 



Lepyrouia augulifera : 348 



Lesquereux, Leo, a review of the fossil flora of North America, by 233 



cited 41 



Bew species of fossil plants from the Cretaceous formation of 



the Dakota group 391 



on some new species of plants from the Ligni4:ic formations 363 



Leucochila arizonensis 128 



hordeacea '. 128 



Lencosticte atrata 69 



list of specimens of 71 



australis 79 



list of specimens of 81 



genus 66 



bibliography of 53 



biography of 63 



geographical distribution of 61 



history of 51 



monograph of, by Robert Ridgway 51 



Tephrocotis 71 



list of specimens of 72 



(Tephrocotis, Swainsou, var. ?) Griseiuucha, Brandt 77 



list of specimens 



of 78 



Tephrocotis, variety Littoralis 74 



list of specimens of 76 



Liburnia vittatifrous 351 



Ligniticbeds 216,217,219,233 



flora 243 



formation 376, 377 



new species from 363 



group, conclusions regarding it in Eastern Colorado 401 



of Eastern Colorado and portions of Wyoming, on the, by F. V. 



Hayden 401 



Ligyrocoris coustrictus 309 



sylvestris 308 



Limax campestris 131 



castaneus 131 



montanus 130 



Lime Creek :.. 162 



Limnfeidse 138 



LimngeiufB 138 



Limnea Biuneyi 139 



catascopium 139 



desidiosa 138 



emargiuata 139 



ferruginea 139 



humiiis 139 



Nuttalliana 138 



palustiis 138 



stagnalis 138 



sumassi - 138 



Limnonorus rufoscutellatus 335 



List of authorities on Mollusca 140 



photographs illustrating the ruins in Southwestern Colorado and Utah. . 38 



Lithadothrips (nov. gen.) 221 



vetusta 222 



Little Giant lode 161 



Twinkle location 158 



Lizard's Head 190,197 



Lode, Aspin • 161 



Big Casino 162 



Comstock 159 



Crystal ^ 161 



Excelsior - •.-. 161 



Green Mountain 160 



Highland Mary 156,159 



Mammoth 157 



McGregor 161 



