gl JAMES A 
iF L RECVO 
KHYH95 
CAT we 
[From ‘Tr Transacrrons of the Zootocrcat Socrery of Lonpon’,—Vol. xvr. Part 1., February 1901.] 
I. On_ the Development of the Skeleton of the Tuatara, Sphenodon punctatus ; 
with Remarks on the Egg, on the Hatching, and on the Hatched Youngf By 
G. B. Howes, LL.D., F.RS., and H. H. Swinnerton, B.Sc., Marshall Scholar, 
R. Coll. Set. Lond. (From the Huxley Research Laboratory.) 
Received May 21, 1900; read May 22, 1900. 
[With Plates I-VI. and 18 text-illustrations. | 
ConTENTs. Page 
MPPRIEROMUCHIOM A tafe tate tic: «Save auwld wi eieicl sats als. sholel ind ietaeioe ojanepoamn ents 1 
Dama erialirnctere sinreie s:tytrets oe accrarsveqa tus Mydialsvereis siti io svar sues otetaustoke Gaveeys ate + 
See Veb nods andulveconstLuctlonis ere vera clciole cle ieie siaisiierelsi cists’ sieve wie ele stele a 
4. Observations on the Egg, on Hatching, and on the Hatched Young .... 8 
Dem LhowAcKiall a SK GLOLOLIG Fara: sic\ « sess fas stance ie olavd aareCeie rarer lecapeeTera el zie meyer 10 
Goenoral sanduas tomlorminolocyse melas cicraieisiercisisicre celts erelelerels 10 
VertebraliColummnlg iirc onfevsioysterns acy naive sbin sececioce et, sieiecalevetecersts 11 J 
RID Sean Qe SEEIMR UD so mye) ovey scp er cxeiereseuereyseeyelo: < isieite Syeisneclereysis4ee spo a 27 te 
coAtbdominal Rabsicn (Gastralia)) selejie cele <iieies ciere eters elelelslctere «ele 34 Hl = 
Phew kullFandeVasceralArches) sci. s/s ceciele siecle «+ sieveicis eiersl eel 37 | Ts 
Cranio-faciall Membrane-Bones) ss.- aj. sses seen esecee ce acles es 51 \\ = 
Grp lhopAnpendicularaskelotony wre -rteietele) retei~| cielo esis) ate sxc ote el -letarsusiclerat els 58 \2 
Hires echoralkGurdleistss ryjcrentorsy-ys crete isrepa cree nic siercavcr-neveyeverererare 58 \ 
iin Trelhiate Cals Ase AGE eee cee tet meat 58 me 
pep lion pa Ones ear nar oveys oickoxereterei otal aich shes oieteteyeiersreints eieusisvars'ereterarere 60 NG 
The Carpus and Tarsus, with Phalanges ..............0ce00ees 60 YX 
ipmebhoy Den titionemetepeterey cio c svcls cicie ere larole os sie srsseraiaitche icicle le wise, sare 63 
3, Bimimemy ginal Chime Enins, Soosacpboocoqdco once duueobanbedoucac 67 
9. List of the more important Memoirs dealing with Sphenodon ........ 71 
ONDE xplanationtorathewblatestys cierevtenecinver: crs evericlais ses oe crenaislesere ete 75 
1. IntrRopucTIoN. 
ALL work in Reptilian Morphology during the last thirty years has increased the 
interest attaching to the creation in 1867 by Dr. Giinther of the Order Rhyncho- 
VOL. XVI.—PaRT I. No. 1.—February, 1901. B 
