136 Mr. G. A . Boulenger on new 



is worn by trituration during life. The coronal surface 

 is remarkably smooth, even more so than in the English 

 Upper Cretaceous species, A. levi's (unless it be in part due 

 to wear), only a few short, rounded, radiating ridges being 

 observed upon the sides. The indistinctness of the markings, 

 considered in connexion with proportions already noted, sepa- 

 rates the tooth from those of all other species yet known ; 

 and the name of Acrodics nitidus will recall its most promi- 

 nent peculiarity. 



Other remains from the Upper Cretaceous beds are still too 

 imperfect for certain determination. One fragment appears 

 to be a portion of the cranial roof of a large Arapa{ma-\\k& 

 fish ; but this and the accompanying fossils must be left for 

 interpretation by further discoveries, which, it is to be hoped, 

 may soon result from continued search. 



XV. — On new or little-known South- African Reptiles. 

 By G. A. Boulenger. 



During a recent visit to Europe Mr. L. Peringuey, Assistant 

 Director of the South-African Museum, Cape Town, sub- 

 mitted to me various interesting Reptiles, which form the 

 subject of the following notes. They were obtained partly 

 by Mr. Peringuey himself in Namaqualand and Damaraland, 

 between the mouth of the Orange River and Walfisch Bay, 

 partly by M. Juste De Coster at Delagoa Bay. 



Duplicates of some of the new or rare species, viz. Homopus 

 signatuSj CEdura africana, Pachydactylus fasciatus^ Uliop- 

 tropus afer^ Mahuia Peringuey i^ TypMoi^s Schlegelii, and 

 Romalosoma variegatum, have been presented to the British 

 Museum by the Trustees of the South- African Museum. 



Homopus signatuSy Walb. 



Two specimens were obtained by Mr. Peringuey at O'Kiep, 

 Namaqualand (2500 feet), and aflbrd the first information as 

 to the animal of this tortoise, known for a century from the 

 shell only. The young specimens referred by Gray to H. 

 signatus belong to H. areolatus. It is surprising to find that 

 the number of claws in the fore foot is five instead of four, 

 the characteristic number in Homopus ; the tortoise is none 



