346 THE TRANSFORMATIONS OF THE ANIMAL WORLD 



Lamellibranchs persistent 

 forms, 163 



shells of, Bernard and Jack- 

 son on, 261 



Lamnidce, 170 

 Lecanitce, 260 

 Ledas, persistent forms of 



Lamellibranch, 163 

 Lemurs, 39 



Darwin on, 41 



Haeckel on, 54 



Lepidocyclinae (Foraminifera), 



195 



Lepidosiren, 41, 55 

 Lepidosteus (Ganoid-fish), 170 

 Lepterpeton, 294 

 Leptocerata, 215 

 Leptodon, 313 

 Leptolepidce, 241 

 Lepus isabettinus, 126 



Mediterraneus, 1 26 



timidus, 126, 135 



vavidbilis, 135 

 Libellules, 50 



Life, beginnings of on the 

 globe, 318 



dawn of, unknown, 77, 336 

 Limbs, transformation of, 207, 



209-10 

 Limneas, 271 

 Limulus (allied to Trilobites), 



321 



larva of, 256 



Decheni, 197 



polyphesmus, 197 



priscus, 197 



Walchi, 197 



LingultB, almost unchanged 

 from earliest Geological 

 times, 93, 162, 166, 194, 

 326 



Lingula anatina (recent), 163 



Lewisi (Silurian), 163 

 Links (connecting), Archae- 



opteryx, between Birds and 

 Reptiles, 74, 113, 249 



between Cystidea and Blas- 

 toiids, 74 



Links (connecting), between 

 Reptiles and Amphibians, 



IJ 3 



between Ungulates andPro- 

 boscidians, 182 



Linnaean species, 137 



Littorina, 273 



Lizards, 171 



Lophiodontidce, 200-3, 225, 278 



Lophiodon Isselense, 201 



Lautricense, 201, 236 



Leptorhyncum, 201-2 



Medium, 201 



Occitanicum, 201 



Remense, 201 



Rh inocerodes, 20 1 



Subpyrenaicum, 201, 202 



Tapiroides, 201 



Thomasi, 202 

 Loxomma, 198 

 Lycosa (spider), 164 

 Lytocerata (Ammonites), 159 



MACHAIRODUS (sabre-toothed 

 tiger), 210, 225, 313, 316 



Macroscaphitce, the, 215 



Macr other ium, 153 



Mfsrithenum, 183 



Makis (a Lemur), 56 



Malacostraca, 326 



Mammals, absence of tran- 

 sitional forms, 136 



ancestry (possible) of, 305 



Cuvier on extinct forms, 7 



first appearance in Geo- 

 logical time (Trias.), 171, 

 249, 252, 304 



Gaudry on evolution of, 99 



Haeckel on origin of, 5 2 



isolated position of, 113 



no links known between 

 lower and higher forms, 307 



Monotreme, Lamarck on, 31 



Patagonia supposed by 

 Ameghino to be centre of 

 their origin, 315 



Placental, 250 



Reptilian origin unprovable, 

 277 



