HEI'TILIA. 



67 



No. 243. CroCOdilUS Clavirostris, Morton. 



Skull. This is one of the first Crocodilians with cup ancTball vertebra that 

 made their appearance. This specimen was found in the Lower Cretaceous beds 

 of New Jersey, and is in the Museum of the Academy of Natural Sciences at 

 Philadelphia. Size, 25 x 13. Price, $7.50. 



No. 249. Crocodileimns robustus. 



Skeleton, on slab. Original from the 

 Lithographic Limestone (Upper Oolite) in 

 the Department of Ain, France, and now in 

 the Museum of Natural History at Lyons. 



Size, 18x10. Price, $4.50. 



No. 250. Alligatorium Meyeri. 



Skeleton, on slab. From the same locality and Museum as the preceding. 



Size, 12 x 9. Price, $2.00. 



No. 251. Alligatorellus Beaumontii. 



Skeleton, on slab. (Impression and relief.) From the same locality and 



Museum as above 



Size, 9x9. Price, $2.00. 



No. 252. Teleosaiirus Chapmanni, Konig. 



Skeleton, on slab. This species has a square-shaped cranium, a narrow, 

 depressed snout, sub-circular orbits directed upwards and outwards, sharp, slen- 

 der teeth, of which 140 have been counted, 64 biconcave vertebra, 16 pairs of 

 ribs, and dermal scutes arranged as in the Gavial, both in longitudinal and trans- 

 verse series. This fine specimen, from the Whitby Lias, England, is in the Brit- 

 ish Museum. Size, 6 ft. 1 in. x 3 ft, 9 in. Price, $18.00. 



