60 THE KEPTILES OF EGYPT. 
PTYODACTYLUS. 
Ptyodactylus, Gray, Ann. Phil, (new ser.) x. 1825, p. 198. 
Digits free, with transverse plates on the proximal portion of their under surfaces ; 
distal extremity of each digit dilated into a fan-like expansion, with a small median 
fissure at its free end, from which a fine sulcus traverses the under surface of the 
expansion, dividing it into two lateral halves, each of which is covered with from 
7 to 12 divergent lamella; ; a small retractile claw in the median fissure. Body either 
wholly covered with small granules, or with intermixed enlarged tubercles ; abdominal 
scales small, smooth, and nearly imbricate. Pupil vertical. Neither praeanal nor 
femoral pores. 
Linnaeus, in his preface to Frederick Hasselquist's ' Iter Palaestinum,' which appeared 
in 1757, mentions that he had been deputed by the Queen of Sweden to arrange and 
publish the manuscripts of his distinguished pupil, who had died at Smyrna, 9th February, 
1752, in the thirtieth year of his age. Linnseus, as Hasselquist's editor, states that he 
had carefully digested the work in the best way he could, had arranged every thing 
under its proper title, and had altered the technical names and manner of writing them 
without changing the author's meaning. He further says that the synonyms of the 
different species enumerated in the ' Iter Palaestinurn ' would be found in the tenth 
edition of his ' Systema Naturae.' 
In the second part of Hasselquist's posthumous work, a gecko is described under the 
name of Lacerta gecko, a term which Linnaeus had previously given l to the Asiatic 
gecko, G. verticillatus, Laur. It afterwards appeared in the ' Systema Naturae ' 2 . 
Schneider evidently regarded it as a distinct species, as he speaks of it as Hasselquist's 
gecko ; but he did not designate it Stellio hasselquistii, as has been stated by Cuvier 
and repeated by Dumeril and Bibron and other authors. The author who first called 
it L. hasselquistii was Donndorff. 
Hasselquist's gecko was described by Is. Geoffroy St.-Hilaire as Le Gecko lobe, and 
there are two figures of it in the great French work on Egypt. In the first set of 
Keptilian plates it is represented on pi. 5. fig. 5, and in the Supplementary plates on 
pi. 1. fig. 2. Audouin, who dealt with the latter plates, considered that the lizard 
there represented was a variety of the lizard figured on pi. 5. 
In view of the existence of two types of nostril in these Egyptian geckos, the one 
merely swollen and the other tubular, it is unfortunate that it cannot be said with any 
certainty whether these figures represent both or only one of them. The essentially 
tubular nostril is formed by the first labial and three nasals, and exceptionally by three 
1 Mus. Adolph. Frid. 1754. p. 4G. 2 12th ed. i. 17G6, p. 365. 
