IlKMAIN'S IN TIIK COAL-l'OIiMATlOX OF NOVA SCOTIA. <»39 



Lpii;,'th of iniindiblo l"'> cPiitiinetrp. 



H'lmir l";'> M 



,, lmmoniH(;) l"-^ 



„ vcrtchni JVT) niilliinetios. 



lil I ofiitiinotre. 



Tlipro are live tcotli in -2 iiiilliiiictros. 



Under tlio inicM'osL-opo tlui hone hIiowh elongiitcd cells and a soinewliat fibroua 

 Btnictinv, iind there is much cartila-'o asHociated with it. The teeth are composed of 

 radiatint,' tnhes (if ivniy of reiuarisiilile coarseness, and with distinct lateral canaliculi ; 

 hut the coarse tnhes do not reach tlic surfice to which only their terminal canaliculi 

 extend, and there appears to he a thin superficial layer of dense ami hrilliaut enamel 

 bavinif externally a microscopic vertical striation. 



The al)ove characters are taken from two speci.nens ajiproaching each other m 

 dimensions. A third specimen was of much smalk size, and had longer and more 

 slender palatal teeth. It was originally set apart as a second species, under the name 

 ^S. ,iriilldciitiait,n ; hut as the bones secured are few, and it may po.ssibly be a young 

 individual of the present species, I have thought it best to leave it undescribed in the 

 meantime. 



C. ILjl'i'iiiiou Dnirsiiiii, Owen- (riate 41, figs. C>2 to 85). 



[OwKN, Journal of Cicojogicid Socii'ty, vol. xviii.. p. -241 . Dawsox, ' Air-breathers 

 of the Coal Period," p. .la. ' Acadian Geology,' p. ;3S().] 



The specimen on which Owkk founded this genus and species was obtained by mo 

 in 18(il. Unfortunatelv it consisted of only a few fragments of bone, the principal <.f 

 which was a mandible, with some of the t.vth remaining, and a fragment of a, maxilla 

 The trees subse.piently examined have atloidcd bones belonging to four additional 

 individuals, and enable the loilnwing (h siiiptinii to be given. 



P.ones .,f skull sliohtlv striated, but not s.ulptured as in Ih-mJnn-pcton. Lower jaw 

 with distinct ascending ramus <,r con.iu.i.l [..ocess, a feature not known in any other of 

 these amphibia, but observed by ('(.PK in his genus BrarlH/chcfrs, which may be allied 

 to Ihjhrpvtui,, but is known only by the jaws and teeth. Teeth, twelve m each ramus 

 of the mandible, bluntly c.nical, slightly striated at the apex. Pulp-cavit.es large and 

 lonrritudinally striate.l at the si.les, though the teeth are not folded. Maxilla turn.si.ed 

 with similar teeth, one of which near the fn.nt is larger than_ the others. Pak.tal teeth 

 numerous, small and conical, with a few large teeth at the sides. 



Verteb,-a. short, cvlindrical, well ossilic.l, with well developed zygapophyses_ and 

 neural spines; ribs' strong and much curved, with well developed division ot the 

 proximal ends ; pelvis imperfect, but api-arently large, with broad ilmm. 



Ihunerus naif the length of the mandible ; radius half as long as humerus ; lemur 



MDCccnxxxir. ^ ^* 



