LIST OF PLATES Nl 
To face 
page 
PLATE 29. THE ANATOMY AND DEVELOPMENT OF PYROSOMA. 
Figs. 1-30 . 384 
PLATE 30. THE ANATOMY AND DEVELOPMENT OF PYROSOMA. 
Figs. I-19 . 384 
PLATE 31. THE STRUCTURE OF THE MOUTH AND PHARYNX OF THE 
SCORPION. 
Figs. 1-6 398 
PLATE 32. A NEW SPECIES OF MACRAUCHENIA. 
Figs. 1-4—Fragments of Head and Jaw of .Vacrauchenia Boliviensits . 416 
PLATE 33. GLYPTOLZMUS KINNAIRDI. 
Figs. 1-4—Specimens from the Old Red Sandstone of Dura Den 466 
PLATE 34. GLYPTOL@MUS KINNAIRDI. 
Figs. 1-5— Specimens from the Old Red Sandstone of Dura Den 466 
PLATE 35. PHANEROPLEURON ANDERSONI. 
Figs. 1-7—Specimens from the Old Red Sandstone of Dura Den 470 
PLATE 36. THE BRAIN OF ATELES PANISCUS. 
Figs. 1-7—Dissection of Brain of A/eles paniscius 508 
PLATE 37. CARBONIFEROUS LABYRINTHODONTS. 
Figs. 1-4—Specimens of Loromma Allmanni, and Pholidogaster pisci- 
formis . 534 
PLATE 38. DIPROTODON. 
Figs. 1-6—Teeth of Diprotodon, Queensland S44 
PLATE 39. ARCTOCEBUS CALABARENSIs. 
Drawing by Wolf of the animal as seen when living 
594 
