510 RICHARD SWAXN LULL ON 



Corvipes lacertoideus E. Hitchcock. 



Coriiipes lacertoideus K. Hitchcock, '58, p- '*H, pi- 1^, %• 3; pi. 47. fig-. 1 ; pi. oo, 

 fig. 7. 



Specific characters. Pes: divarication of digits II and III, 40°; of III and IV, 35°; 

 of 11 and IV, 75°. Length of digit II, .033 m.; of 111, .043 m.; of IV. .033 m. Length 

 of heel, .023 m.; of the foot, .066 m. Length of step, .043 to .068 in. 



Manns: divarication of digits 1 and V, 160°. Length of digit I, .OK) m.; of II, .010 

 m.; of 111, .019 m.; of IV, .020 m.; of V, .015 m.; of the hand, .033 m. 



Type specimen, no. \^, of the Hitchcock cabinet, on sandstone, from Turner's Falls, 

 Massachusetts. 



Family EUBRONTIDAE. 



Family characters. Large bipedal forms, more or less rovmded claws, digits broad 

 with distinct phalangeal pads. Foot functionally, possibly structurally tridactyl as the 

 hallux claw never impresses. No caudal trace. 



Genus Eubrontes E. Hitchcock. 



Enhrontes E. Hitchcock. '45b. p. 23. 

 Brontozomn E. Hitchcock, '47, p. 50. 



Generic characters are those of the family. This genus is distinguished from Anchi- 

 sauripus by the greater size, generally broader digits, and blunter claws, and by the 

 absence of the hallux. A possible exception to the last point is seen in specimen 

 no. ~, of E. gigunteiis, from Northampton, Massachusetts, which is so deep that it will 

 hold a gallon of water. This shows what seems to be the impression of a hallux claw in 

 the same position to the rear as in the genus Anchisauripus, but the claw instead of being 

 a prehensile one is more of the character of the anterior claws. 



E. (jirjanteus is the type species. 



Eubrontes giganteus E. Hitchcock. 



Eubrontes giganteus E. Hitchcock, '45b, p. 23. 



Brontozoum gigantenm E. Hitchcock, '47, p. 57 ; '58, p- 64, pi. 33, fig. 1-3 ; pi. 41, 

 fig. 1 ; pi. 53, fig. 7 ; pi. 57, fig. 1. 



Recharacterized by C. H. Hitchcock, in E. Hitchcock, '65, p. 23, pi. 10, fig. 1. 



Specific characters. Divarication of digits II and 111, 18°; of HI and IV, 20°. 



