* 5 . Liolaemus azureus (Mull.).

Tropidocephalus azureus, F. Muller, Verh. nat. Ges. Basel, vii. 1882, p. 161, pl.

This species is closely allied to L. pectinatus (D. & B.), which it resembles strikingly in coloration, It is, however, easily distinguished by the longer digits, the nearly equal length of the third and fourth fingers, and the strongly keeled ventral scales. The species was originally described from Uruguay, whence the Natural-History Museum has also received a specimen, hitherto confounded with L. pectinatus . A fine specimen from near the coast was sent by Dr. v. Ihering.