ADDENDA AND CORRIGENDA. 507 
each side, extending entirely across in front of the anal scuta. Six 
anal scuta; two small ones on the middle line, one of which is 
marginal ; one large one on each side of these, also marginal; and 
a small one on the external side of these, also marginal. Colour 
brown, dark above, pale below, darkest on the sides (specimen not 
in the best condition); side of head with some yellow spots ; lips 
and throat white, the former with a dark brown spot on some of 
the labials, 
millim, 
From end of snout to vent........ 32 
From end of snout to ear-opening.. 7:5 
Fore limb .............cccaeee 10°5 
Hand Vim: seis iciec ead a cee 14:5 
Pebas, Upper Amazon. 
Page 417. 
rase Scolecosaurus pallidiceps. 
Sixth line of generic diagnosis of Oophias, erase “ clawless,” 
The Synopsis of the species of the genus Cophias is to be replaced 
by the following :— 
I. Digits clawed. 
Fore limb tetradactyle, hind limb didactyle; 28 
scales round the middle of the body.......... 1, heteropus. 
Both pairs of limbs tridactyle; 26 scales round the 
HOGY. tates rac eis pootsg wae nade a a names 2. tridavtylus. 
Fore limb tridactyle, hind limb didactyle ; 34 scales . 
round the body ...... cc... cess ee ee eeee vee 3. boetigeri. 
II. Fore limb with three or four clawless tubercular digits; hind 
limb undivided. 
Scales quadrangular, juxtaposed ...........0.. 4. flavescens. 
Scales hexagonal, overlapping .............00. 5. dorbignyi. 
Erase the footnote. 
Page 418. Add a species :— 
1. Cophias heteropus *. 
Chalcides heteropus, Licht. Nomencl. Rept. Mus. Berol. p. 17. 
Brachypus pallidiceps, Cope, Proc. Ac. Philad. 1862, p. 856. 
Fore limb with four, hind limb with three clawed digital tubercles, 
Frontonasal hexagonal, a little longer than broad; frontal large, 
posterior angle truncate and in contact with an elongate inter- 
parietal ; two supraoculars ; nasal twice as broad as deep ; loreal 
shorter but. deeper than the latter ; two infraorbitals, anterior longest 
and in contact with the third, fourth, and fifth upper labials; tem- 
* Described from the type specimen. 
