On a New Species of Propappus. 45 



40 mm. ; and the spine is 15 mm. high. The vertebrae diminish in 

 size backwards, the height of the penultimate being 40 mm., and the 

 maximum width across the transverse processes 29 mm. The spines 

 are short, and directed backwards. Chevrons begin after the 3rd of 

 the series and are continued to the end. 



The dermal ossicles are comparatively large, and were very 

 plentifully scattered over the back and ribs of the animal. The 

 largest of them reached a diameter of 55 mm., which is a greater 

 size than is seen in the larger animal Propappus omocratus. They 

 have the typical shape and sculpture of the normal Propappus 

 ossicles. 



Dr. Broom has kindly examined the specimen for me, and 

 confirms my opinion that it must be regarded as a new species. 

 For it 1 propose the name Propappus parvus, sp. nov. 



