A. GUNTHER ON SOME RARE REPTILES 
bo 
bo 
i—) 
Iguana. Metopoceros. 
millim. millim, 
Hourthémetacarpall 9500 ete Hea oe ce nel ln ye oe pee O 
Pourthtinger: ‘first, phalanx. - ei esate Ok Bing reas ne Cae a 
Fourth finger, second phalanx. ... «2 8 -mu+. 5. yey 6 
Fourth finger, third phalanx roc. ise BOON fee a 
Fourth finger, fourth phalanx...) 66, AO on ea ns 
Witth metacarpal oc. see cs a Ge a, sak eg OO sees oisyh ral an) 
Hitthpancer iret phalanx. Ve cme ne cemern | Op wile Cccumecy au) 
Pith finger, second phalanx. 9 ys"... = sil Seer ee 
emUteeer as ts, cuopienn: Suey. «3° ce ee OCser marr. i: SOU) 
SD lie. anleas tek oy te ERM homie k Som 3 PRO oe Maney eo, an OE! 
Hirstumetatarsal .c0 me 6 ye ail Pale lope Om een pode el 
Hirst toc; first phalanx) is Sol bow oe Ae es oe 
Secondémetatarsal 2 / iy ob cnn OL, ogee wh ee 
Second toe} first sphelanxees se ee MlS ene etme 
Secondatoessecondsphalanxegge lames yeu oe l/chiaccfeeenee Ey iG 
Rhindsmetatarsalge gee eee eita =e ue (Oce e) ee ee OU) 
thindstoesstinstphalanxye (eg a). « = 14. oe 
hind toexsecond phalawx eee ne LBS fats wiry ae 
hind toe. third phalanx ves re le NOw no 8 eet es 8 
Hourthymetatarsall - cio4 = ceca en ee OULEe pen oe aaa 
Hourthtioe, first phalanx ‘si; sca S29 .sk lB) ne. ee ee ok 
Hounthitoe;second phalanx sy ee. = ello) ee 0 ee lO 
Hounthatoethindyphalanx ae seu ueeee ee er eee 
iHourth toe; fourth phalanx, 95 25. 3. 14 95 as eo 
Fifth metatarsal . «1 Wienke | vi eel eats el Ode Cie” so eli 
Bifth toe; firstiphalarixt: << cr Pe, tha Ties Pele ele 
Mitth toe, second phalanx «ince. Get L8G <a eee 0 
Hitthotoe;, third phalanx. -<¢ gieov iw eel De ce oe iy ee 
It is obvious from a consideration of these measurements that the limbs of Metopo- 
ceros are considerably shorter than those of Jguana, therefore that its habits are much 
less arboreal. Probably it lives on rocks near the sea-shore, and has assumed a black 
coloration, like other reptiles inhabiting similar localities. 
The shortening of the limbs is conspicuous in the humerus and femur, less so in the 
bones of the forearm and lower leg, but most in the distal bones of the fore and hind 
feet, which are comparatively much more shortened than the proximal. 
The largest specimen received by the Society was 44 inches long, of which the trunk 
and head measured 18 inches. 
