294 CKOCODiMD-t:. 



ventral shield much less developed than in the other species, only 

 tlie scutes on the sternal region imbricating ; the posterior abdo- 

 minal region without any ossifications. Fingers free, outer toes 

 ■\vebl)ed at the base. Adult uniform blackish ; young olive and 

 black, the latter colour usually pi'edominating. 



The largest specimen in the Collection measures 2 m. 5 centim. 



South America cast of I he Andes, from the Amazon to the liio 

 dc la Plata. 



a, h, c, d. Ad. & hgr., IJrazil. 



stffd. 

 e-g. Yg., spir. Periiambuoo. .7. P. Smith, Esq. [P.]. 



A.Ad., skel. (incomplete). l\io Clrando do Dr. v. Iheving [C.J. 



Sul. 

 «, /.-. Ilgr., .skulls. Pio Grande do Dr. v. Ihering [C.]. 



Sul. 

 /. Ad., .stffd. Pio Paraguay. Col. Perez de Lasala [P.]. 



m-n. Yg., spir. Buenos Ayres. J. Wilks, Esq. [P.]. 



o. Yg., sitlU. ■ ■' 



p. llgr., skel. ? 



q. Hgr., skull. ? 



3. Caiman sclerops. 



Crocodilus sclerops. Schncid. Ilii^t. Anip/t. ii. p. 162(1801); Cuv. 



Ann. Mus. x. p. .'31, pis. i. & ii. (1807) ; Tiedem., 0pp., <§- Lib. Nat. 



Amph. p. GO, pi. V. (1817). 



cainuxn, Daud. Kept. ii. p. 399 (1802). 



yacare, Daud. I. c. p. 407. 



Jncaretiuga punclidatus, Spix, Lacert. Bras. p. 2, pi. ii. (182o). 

 Champsa sclerops, fTof//. Syst. Amph. pi. vii. tigs. 1 & 42 (1830); 



Natterer, Ann. Wicn. Mus. ii. p. 321, pi. x.xiii. (1840). 

 Alligator sclerops, part., (rraij, Si/n. licpt. p. 02 (1831). 

 sclerops, Dinn. ii- Bihr. iii. p. 79 (1836); Strauch, Syn. Crocod. 



pp. 21 & 76 (1866) ; Burmeidcr, ybiu. Soc. Aryeut. i.x. p. 245 



(1880). 



punctulatus, Dinn. 8^- Bihr. f. c. p. 91 ; Stravcli, I. c. pp. 24 & 79 ; 



Gihitli. Biul. C.-Am., licpt. p. 21 (1885). 

 Champsa vallifrons, Natterer, I. c. p. 322, pi. xxiv. 



punctulata, Natterer, I. e. p. 323, pi. xxv. 



Jacare sclerops, Gray, Cat. Tort. i<f-c. p. 64 (1844). 



punctulata, Grai/, I. v. p. (io, and Cat. Sh. Sept. ii. p. 26 



(1872)._ 



vallifrons, Gray, I. c. 



longisctitata. Gray, Ann. cS' May. N H. (3) x. p. 328 (1862) 



and Tr. Zool. <S'or. vi. p. 164, pi. xx.xiv. (lf^67), and Cat. Sh. Rept. 



ii. p. 2<). 



ocellata, Gray, U. cc. pp. 329, 164, pi. xxxiii., it p. 2(5. 



— multiscutata, Gray, Tr. Zooh Sue. vi. p. 164, and Cat. Sh. 



JRept. ii. p. 26*. 



* I have been unable to trace tlie type specimen of '/. miitfifO'tafu \ and T 



sh'orgly sii.«pert that, throng;!! some ovci-siplil. this !>iip])o?rd pperiep was 



foiindf'fl u]ion tlio verv cperiiiien wliii-li liiid pi-c\ioiis!y pcrvcd as the type of 

 ./. t(iiiyi-iiiit(i/(i. 



