382 Zoological Society :— 
M.P., who has done so much to make known the zoology of West- 
ern Africa, and formed such a fine collection of insects, especially of 
Coleoptera. 
M. Auguste Duméril, in the ‘Revue et Mag. de Zoologie’ for 
1851, describes and figures a Nocturnal Lizard, which had been re- 
ceived from Senegal, under the name of Stenodactylus caudicinctus 
(p. 478, t. 13). 
M. A. Duméril observes that the slender-toed Geckotians are 
easily divided into two genera,—the Gymnodactyles having slender 
toes, which are smooth on the edge and with small centrical plates 
beneath ; while the Stenodactyles have each side of the toes fringed 
with small teeth, and the lower surface granular. 
I cannot consider this an accurate account of the typical Steno- 
dactyles, or, at least, of the toes of the long-known species on which 
the genus Stenodactylus of Cuvier was established ; for in that ani- 
mal, as is well shown in Savigny’s figure in the large work on Egypt, 
the underside of the toes is furnished with a series of plates as in 
the Gymnodactyles, but instead of the plate being entire on the edge, 
as in Gymnodactylus, it is deeply dentated on the outer margin, which 
caused me, in my ‘Catalogue of Lizards in the British Museum,’ to 
form a tribe for it in the family Geckotide, under the name Steno- 
dactylina, which is thus characterized :— 
“E. Toes cylindrical, tapering, toothed on the sides, lower surface 
with denticulated cross plates”’ (1. c. p. 177). 
The Lizard from Senegal, which M. A. Dumeéril has referred to 
this genus, does not agree with this character. It, indeed, has the 
under surface of its cylindrical tapering toes covered with small 
acute scales, like the soles of its feet; and therefore I think that it 
must be formed into a distinct genus, which will form an anomalous 
group among the Night Lizards, or Geckotide, characterized by this 
peculiarity in the toes. 
The Senegal Lizard cannot be properly referred to the genus S¢e- 
nodactylus for another reason: the true Stenodactyli have the 
external appearance of the dyame, so much so that Geoffroy, on 
Savigny’s plate, calls it L’ dgame ponctué; and M. Audouin, in hig 
‘ Explanation of Savigny’s Plates,’ referred it to the genus 7’rapelus, 
under the name of 7. Savignii ; while the Senegal Lizard is a typical 
Gecko in all outward characters except the toes, so much so that 
when it was first seen it was thought to be an Hudlepharis, erro- 
neously said to come from Africa. 
I propose to call this genus 
PsILODACTYLUS, g. nl. 
Toes short, subcylindrical, tapering, covered with flat scales above, 
and, like the palms, with small rough granules beneath ; thumb like 
toes, but shorter; all clawed. Tail cylindrical, covered with flat 
scales, annularly plaited, with a series of larger scales on the edge of 
the folds; beneath covered with subequal, flat, square scales. Pre- 
anal pores in a short angular line. Head depressed, covered with 
polygonal shields ; labial shields low, broad ; upper and lower rostral 
