Fig. 30.— Anterior part of skull, chiefly the muzzle, the right side, natural size ; a, the same, from above^ 



of Geolabis rhynchccus Cope. Page 808. 

 Fig. 31. — The same muzzle from the right side, twice natural size. 

 Fig. 32.— Cast of the frontal and facial regions of the sknll of the Geolaiis rhynchaeus, second specimen, 



natural size, from the right side; «, from above ; b, from below. Page 808. 

 Pigs. 33-50. — Portions of five individuals of Mesodecies caniciilus Cope. Natural size (except tig. 39). 



Page 805. 

 Fig. 33. — Posterior portion of left mandibular ramus, outer side ; a, from below. 



Fig. 34.— Middle of right ramus accompanying the last figured specimen, showing the partially pro- 

 truded last premolar, from the external side ; b, from above. 

 Fig. 35. — Portion of right ramus of a second individual containing the deciduous last premolar, outer 



side ; a, inner side ; b, from above. 

 Fig. 36. — Posterior portion oif left ramus of a third individual, outer side ; b, from above. 

 Fig. 37. — Anterior portion of left ramus accompanying Fig. 36, without teeth, inner side ; b, from 



above. 

 Figs. 38-41. — Fragments of one individual. 

 Fig. 38.^Portion of right maxillary bone containing last premolar and first true molar, natural size, 



seen from below ; a, the external side. 

 Fig. 39. — The same specimen, twice natural size, from below. 



Fig. 40. — Median portion of left mandible, natural size, external view ; b, superior view. 

 Fig. 41. — Anterior middle portion of right ramus, external view; displaying permanent last premolar 



below the correspoudiug deciduous tooth ; a, inner side of the same. 

 Figs. 42-50. — Fragments of the skeleton of a fifth individual. 

 Fig. 4'2. — Postorbital portion of skull containing cast of the brain, which is exposed by the partial 



removal of the superior walls, left side ; a, superior ; b, inferior, and c, posterior views. 

 Fif. 43. — Portion of the left mandibular ramus displaying the coronoid process, outer side; a, inner 



side. The deciduous last jiremolar remains. 

 Fif. 44. — The axis and three succeeding cervical vertebra! lying attached by their inferior aspects to 



the posterior face of the atlas, seen from the left side ; a, the same, seen from the front of the atlas; 



b, the same, seen from above the axis ; c, posterior view of the mass. 

 Fie. 45. — A dorsal vertebra without the apex of the neural spine, from the left side; a, anterior, and b, 



posterior views. 

 Fig. 46. — A series of four consecutive dorsal vertebrie a little dislocated, and joined with several ribs, 



including the first, seen from the right side ; a, the same seen from the left side, and displaying the 



ribs ; b, the same seen from below ; c, anterior view. 

 Fig. 47. — Praesternum left side ; a, from above ; b, from below ; c, from the front ; d, from behind. 

 Fig. 48. — Scapula from the posterior edge ; a, the glenoid cavity. 

 Fig. 49.— Proximal half of humerus ; a, inner side ; b, proximal extremity. 

 Fig. 50. — Distal extremity of humerus, anterior aspect ; a, posterior side. 



