ADDENDA AND CORRIGENDA. 639 
Add :— Page 208. Coronella regalis. 
Erase ‘* Diadophis arnyi” from the synonymy. 
Page 211. Add a genus :— 
89a. DREPANODON. 
Cleelia (non Fitz.), Jan, Elenco sist. Ofid. p. 92 (1863). 
Drepanodon, Peracca, Boll. Mus. Torin. xi, 1896, no, 231, p. 3. 
7 to 10 small maxillary teeth increasing in length, followed, 
after an interspace, by two large, compressed teeth; mandibular 
teeth subequal. Head distinct from neck; eye moderate, with 
vertically elliptic pupil. Body cylindrical ; scales smooth, with or 
without apical pits, in J5 (or 17) rows; ventrals rounded. Tail 
moderate ; subcaudals in two rows. 
South America. 
1. Drepanodon anomalus. 
Cleelia anomala, Jan, l. c., and Icon. Gén. 35, pl. i. fig. 4 (1870). 
Oxyrhopus anomalus, Boettg. Zool. Anz. 1891, p. 347. 
Drepanodon anomalus, Peracca, l. c. p. 8. 
stigmaticus, Peracca, l. ¢. p. 5. 
Rostral broader than deep, just visible from above; internasals 
half as long as the prefrontals ; frontal slightly longer than broad, 
as long as its distance from the end of the snout, as long as or 
slightly shorter than the parietals; loreal very small or absent ; 
one pre- and two postoculars ; temporals 1+2 or 242; six upper 
labials, third and fourth entering the eye; three or four lower 
labials in contact with the anterior chin-shields; posterior chin- 
shields as long as or shorter than the anterior. Scales in 15 rows. 
Ventrals 150-169; anal entire; subcaudals 67-77. Yellowish 
above, each scale with a black terminal dot; upper surface of head 
and nape black, with a whitish collar; uniform yellowish white 
beneath. 
Upper Amazon. 
2. Drepanodon ? flavitorques. 
Liophis flavitorques, Cope, Proc. Ac. Philad. 1868, p. 307. 
Rostral projecting and well visible from above; frontal very 
broad, with a long produced posterior angle; loreal deeper than 
long ; one pre- and two postoculars ; temporals 1+2; seven upper 
labials, third and fourth entering the eye; chin-shields short. 
Scales in 17 rows. Ventrals 188; anal divided; subcaudals 105. 
Uniform dark brown above, with a broad yellow half-collar crossing 
the posterior half of the. parietal shields and two rows of scales ; 
below dirty yellowish. 
Total length 440 millim. ; tail 140. 
Magdelen River, Colombia. 
