griffin: ophidia from south America in carnegie museum 



215 



CotTNTs AND Measurements. 



(No. 347.) 



Anal 1/1 



Scale-rows 19 



Gastrosteges 146 



Urosteges 48/48 



Upper labials 8(4.5) 



Preoculars 1 



Postoculars 2 



Temporals J2, 3 



12,2 



Total length in mm 193 



Length of tail in mm 33 



Genus Thamnodynastes Wagler. 



74. Thamnodynastes nattereri (Mikan). 



Coluber nattereri Mikan, Delect. Faun. Flor. Bras., 1820, Plate. 

 Thamnodynastes nattereri Boulenger, Cat. Snakes, III, 1896, p. 116. 



C. M. No. 48, d^, Provincia del Sara, Bolivia, Jose Steinbach coll., Dec, 1912. 

 C. M. No. 339, cf , Santarem, Brazil, J. D. Haseman coll., December 7, 1909. 

 C. M. No. 361, 9 , Rio Doce, J. D. Haseman coll., May 20, 1908. 



No. 339 was captured in the water of a swamp between the Rio Tapajos and 

 the Amazon. All except the two outer rows of scales are strongly keeled. It 

 conforms to the characters of T. nattereri except that there are seventeen instead 

 of nineteen rows of scales. No. 361 was captured in a mill-race. 



Counts and Measurements. 



Anal 



Scale-rows. . . 

 Gastrosteges . 

 Urosteges . . . . 

 Upper labials . 



Preoculars 



Postoculars 



Temporals 



Total length in mm. . . 

 Length of tail in mm. 



(No. 48.) 



(No. 339.) 



(No. 361.) 



