182 Miscellaneous. 



processes is a small articular facet on each side on the lower part 

 of the rim of the posterior funnel. These may have been related 

 to rudimental cervical ribs. The neural arch is broken off. 



The dorsal vertebrae have their sides somewhat contracted : in 

 one specimen the inferior face is rounded ; in another (which I sup- 

 pose to belong to a different part of the column) it is longitudinally 

 acute. In this and another dorsal, where the parts are exposed, 

 the floor of the neural canal is interrupted by a deep fissure, which 

 has a triangular shape with the apex downward, when seen in 

 profile. This is due to the fact that the opposite halves of the 

 centrum are united by the circumferences of the articular cups, which 

 have in profile an \^ shape. The diapophysis does not project far 

 beyond the base of the neural arch, and is compressed. 



The caudals are elongate, and resemble, in the forms of the centrum 

 and neural arch, those of Lcelaps. The neural spines are not pre- 

 served, but, if present, were directed well backwards, bearing the 

 posterior zygapophyses, since the arch stands only on the anterior 

 three fifths of the centrum. Chevron-facets are not distinct ; but 

 two emarginations on the rim of the posterior face of one of the 

 vertebrae indicates their existence ; in other centra even these notches 

 are wanting. The tail was evidently tapering. There is no indica- 

 tion of the transverse fissures seen in Sphenodon and many Lacertilia, 

 nor are there any diapophyses on the caudal vertebrae preserved. 



Two vertebrae accompanying the above are similar in general cha- 

 racters, and appear to belong to the sacrum. If truly such, they 

 indicate a structure different from that seen in Lacertilia and Croco- 

 dilia, and present some resemblance, perhaps only superficial, to the 

 Dinosauria. The centrum is much compressed ; and the articular 

 extremities present a wide plane border below the notochordal per- 

 foration. The corresponding part of the centrum presents no indi- 

 cation of diapophyses. Neural arch lost. 



Some heads of ribs of appropriate size are compressed, and ex- 

 hibit a small tuberosity, which is perhaps a rudimental capitulum. 

 They are much more lizard-like than those of Cricotus. 



The phalanges are of more slender form than those of Cricotus, 

 and more like those of lizards, although less slender than usual 

 among that order. The shafts are sometimes little, sometimes much 

 depressed. The distal condyle of one of the latter is not emarginate. 

 An ungual phalange is subcouic, flat below, and with a shallow 

 groove above one of its lateral borders. 



A coracoid bone supports the greater part of the glenoid facet, 

 and exhibits also a facet for the scapula ; these are flat, and not ex- 

 cavated. Its form is that of an irregular right-angled triangle, the 

 base anterior and the outer angle truncated by the glenoid facets ; 

 its inner margin is thickened and truncated as though it had been 

 articulated with a mesosternal or opposite coracoid bone. This may 

 not be a correct interpretation of its appearance ; for if so, the 

 arrangement would differ equally from that of Sphenodon, Lacertilia, 

 and Salamanders, and resemble that of the Sauropterygia. And it 

 is not to be denied that there are other points of resemblance to the 

 coracoid of that order. There is an anterior marginal facet as though 



