2 KUYNCHOCEPHALIA. 



ram.]. HATTERIID^. 



llatteiiidio, Cope, Proc. Ac. I'liilwl 18G4. 

 llattcriida?, Gii/tt/ter, Phil. Irans. clvii. 18G7. 

 Sphenodoutida), Co/^e, Proc. Amer. Assoc, xix. 1870, p. 235. 

 lihynchocoplialidse, Iloff^inanu, Broinis Klasscn u. Ordii. d. Tliicrr. 



1883. 

 Splieuodoutidoe, Hiixley, Q. Journ. Geol. Sue. xliii. 1887, p. 692. 



Vertebrae aniphicoolous, the centra conically excavated; inter- 

 ccntra present between the dorsal vertebra) ; ribs with uncinate 

 ])rocesses. Clavicles and interckivicle present. Limbs ambulatory ; 

 digits with not more than five phalanges ; humerus with an 

 eutepicondylar and an ectepicondylar foramen. Premaxillaries 

 distinct, beak-like, toothed, separating the nasal openings ; parietals 

 distinct; a parietal foramen; vomers distinct, in contact with the 

 pterj-goids; a large columella (epiptcrygoid). Dentition acrodont. 



1. SPHENODON. 



iSplienodon, (''rai/, Zool. Misc. p. 13 (1831), and Cat. Sh. lie t. ii, 



p. 30 (1872). 

 Hatteria, Grai/, Zool. Misc. p. 72 (lf<42), and Cat. Li::, p. 249 (i845) ; 



Gilntli. Phil. Tr. clvii. p. 59o (1807). 

 Rhynchocephalus, Given, Tr. Geol. Soc. vii. p. 83 (1845). 



A single scries of teeth on the outer border of the palatine, 

 parallel Avith the maxillary, separated from the latter by a groove 

 in which the edge of the mandible is received. One or two teeth 

 occasiorially present on the vomers. Body slightly compressed ; 

 tail long, strongly eomj)ressed. Limbs well developed ; digits short, 

 all clawed, webbed at the base. No ear-opening. Eye large, with 

 vertical jjupil. Scales of upper parts small, granular, intermixed 

 with small tubercles; a nuclial, dorsal, and a low caudal crest; 

 ventral scales large, squarish, arranged in transverse series*. 



New Zealand. 



1 . Spheuodou punctatus t. 



Spheuodon, Gray, I. c. 



Hatteria piinctala, Graij, II. cc, and Zouh Ereh. and Terr. pi. xx. 



(1845) : Giinth. /. c. pis. xxvi.-xxviii. 

 lihynchocephalus, Otcen, I. c. ])L vi. figs. 5-7. 



* Tlic siiuiLirity of the intoguiuuuts of Sphcnodon niul of a Clicloiiian (e. g. 

 Ckelijdru) is very striking, cspeeiallv if tLoy be couipai-cd with those of an 

 Aganioid Lacci-tilian. 



t On variwis jjoints of anatuiiiy, rf. : Peters, Moii. Uc-rl. Ak. 1874, p. 40 ; 

 Albrecht, 13ul]. Mus. Belg. ii. p. 18r>, pi. viii. (1883); Eayer, 8itzungsb. Ak. 

 Wicn, xc. p. 237, pi. — (1884); Dollo, Zool. Anz. 1884, p. 5-18; Fiirbringer, 

 Morphol. Jahrb. xi. p. 484 (1885); Earn-, Am. Nat. 1885, p. 1112, and 1880, 

 pp. 733, 1)70, and Zool. Anz. 188(5, p. (185, 



