1906.] DIAPTOSAUKIAN REPTILE. 595 



sufficiently well displayed or preserved to permit of a satisfactory 

 examination. The cervical vertebne are about seven in number, 

 and from the position of the shoulder-girdle we may infer that 

 Howesia had a neck of about the same length as the skull. The 

 axis has a large spine almost of mammalian type. Of the other 

 cervical vertebras, only the zygapophyses are displayed. There 

 are no dorsal or lumbar vertebrae preserved. There appear to 

 have been two sacral vertebrae, as in Erythrosuchits. Twelve 

 caudal vertebrae are preserved, but not well displayed. The first 

 of these is probably the 3rd caudal. It has well-developed 

 transverse processes and spine. Across the transverse processes 

 it measures 26 mm., and the total height of the vertebra as 

 preserved is 24 mm. There is probably not much of the spine 

 missing. The body is much constricted, as in Phytosaurs, Pelyco- 

 saurs, and most primitive reptiles, and appears to be amphiplatyan 

 or amphicoelian. It is certainly not distinctly notochordal. A 

 well-developed intercentrum lies between this vertebra and the 

 next. The second preserved vei'tebra (probably 4th) has a small 

 chevron, and the succeeding vertebrae have very long double- 

 headed chevrons. In the case of the supposed 5th caudal, the 

 chevron as preserved is 24 mm. long, and in the 6th it is probably 

 even longer. Except in being slightly smaller, the posterior 

 caudals are very similar to the anterior ; they have the same 

 slender trans vei"se processes and similar long chevrons. 



Shoulder-girdle . 



Though the shoulder- girdle is rather badly preserved, sufficient 

 remains to show all the principal features. The scapula is com- 

 paratively short and moderately flat. Its greatest length is 

 29 mm. The upper end is 16 mm. wide, and has evidently 

 supported a large cartilaginous suprascapula. The postei-ior 

 border curves gently and unifoi'mly to the glenoid cavity. The 

 anterior border is badly preserved, there being only indications 

 of the cast. In fig. 10 (PL XL.) a view is given of the shoulder- 

 girdle as preserved, and in fig. 11a restoration of the whole girdle. 

 The lower end of the scapula is probably 14 mm. wide, and there 

 is no evidence of any notch. The coracoid is very imperfect, 

 but the whole of the anterior half and the glenoid portion are 

 preserved. It has evidently been a large flat rounded bone. 

 There is no coracoid foi-amen seen in the specimen so far as 

 preserved. Perhaps the foramen was in the cartilage at the 

 anterior and upper corner of the bone. There is no precoracoid. 

 The interclavicle is a slender T-shaped bone, but only a part of 

 the upper end is preserved. The clavicles are long, fairly sti'aight 

 bones which meet each other above the interclavicle. The length 

 of the one which is fully preserved is 23 mm. 



Humerus. 



The humerus is in bad preservation, the vipper half being 

 represented only by a much weathered impression. The length 



