half the size of the posterior, between which a central occipital. The posterior occipitals are fringed by some smaller marginal scutes. Two large supraoculars on each side. Seven or eight narrow upper labials, of which the penultimate is the largest. Four chin-shields on one side, five on the other. Temporal scales small, strongly keeled.
Ear very open, vertically long. Collar more distinct in front of the shoulder-joint, and nearly obsolete across the chest. Dorsal scales in eight, ventral in ten, longitudinal series. Prænal region covered by keeled scales, in size and shape scarcely differing from those preceding them. About twelve femoral pores. All the caudal scales strongly keeled.
The fore limb pressed backwards does not reach the groin; the hind limb carried forwards extends to the ear. Thigh finely granular behind.
The upper parts are brown, or, after the removal of the epidermis, green iridescent. Back anteriorly with a black longitudinal band of each side of the median line, the two bands coalescent further behind. An indistinct greenish band along each side of the neck. Lower parts whitish.
| millim. | |
| Distance of snout from vent | 45 |
| Length of tail | 110 |
| Distance of snout from ear | 12 |
| Length of fore limb | 20 |
| Length of hind limb | 30 |
Length of fourth toe (measured from its junction with the fifth) |
12 |
I have given a full description of this lizard, as the specimen found by Miss Kingsley at Lambarene secms to be only the second known to exist in collections. Its specific identity with Tackydromus Fordii of Hallowell might be questioned, as this author has described the specimen in the museum of the Philadelphia Academy as possessing only six rows of ventral scales; also the scutellation of the præanal region is differently described, However, as there is a great agreement in other respects between the two specimens, and the locality (Gaboon) as given by Hallowell points likewise to a specific identity, I adopt the name given by the latter author.
