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Show 1868.] DR. J. MURIE ON GEOPSITTACUS OCCIDENTALIS. 161 tiyely longer than is common to the Parrot tribe. They are clothed with small hexagonal scales, closely set together, which upon the toes, on their upper surface, are gradually altered into narrow partially transverse scutella (fig. 2). Fig. 3. Fig. 2. Fig. 2. Left foot of G. occidentalis (dorsal surface). 3. Plantar surface of right foot. (Both nat. size.) The claws are moderately strong and curved. A better idea may be formed of any differences, if they exist, between this nocturnal species and the Ground-Parrakeet by a tabular view of the limb-proportions. I have added also the measurements of specimens of two other genera, not very distantly related, and from birds nearly equivalent in general size. Comparative lengths of the tarsus, digits, and claws in four genera of Parrots. s o •3 •<s> s s J?*. &* Length of tarsus , 1st digit (inner hind toe), length to root of claw.. Length of the claw 2nd digit (inner front toe), length to root of claw Length of the claw 3rd digit (outer front toe), length to root of claw Length of the claw '. 4th digit (outer hind toe), length to root of claw Length of the claw 10 0*35 0*2 0-4 0-2 0-7 0-3 0-5 0-5 10 0*3 0-2 0-3 0-3 0-7 0-4 0-5 0-4 0*8 0*35 0*24 0-5 0-3 0-7 0-3 0-65 0*33 0-5 0-22 0-2 0-3 0*21 0-5 0-3 0-48 0-21 It will be seen from the above that Geopsittacus and Pezoporus resemble each other closely so far as the lengtb of the tarsus PROC. ZOOL. Soc-1868, No. XI. |