256 SPHAERODACTYLUS. 



above with rather elongate keeled granules those of anterior part of snout much 

 enlarged; scales of back, rather large, elongate, rather pointed and weakly- 

 keeled, imbricate only about six equalling distance of tip of snout to centre 

 of eye; mental large followed posteriorly by a number of enlarged scales of about 

 equal size; suture of second and third infralabials below centre of the eye; 

 ventral scales broader than long, very sUghtly imbricating and perfectly smooth; 

 scales of limbs elongate, pointed, Uttle enlarged and weakly keeled. 



Colour: — Gray uniform and with tiny flecks of darker; the head and neck 

 with narrow lines of darker. These lines may be broken up into series of dots 

 which in some cases appear irregular. Belly pale unspotted; throat with many 

 fine dots. A pair of small white dots on the nuchal region generally present. 



Dimensions: — Tip of snout to vent 23 mm. 



Vent to tip of tail 18 mm. 



Greatest width of head 4 mm. 



Tip of snout to ear 5 . 5 mm. 



Fore leg 6 mm. 



Hind leg 8 mm. 



Remarks: — Mr. Nelson captured all the type-series on Little Swan Island. 

 The two Swan Islands are very near each other, only a narrow channel about four 

 hundred yards wide separating them. Little Swan Island is perhaps three 

 fourths of a mile long and a half mile wide. It is made up entirely of eroded 

 aeolian limestone, the depressions in the weathered rock often bounded by 

 knife-blade septa are filled with the decaying leaves of the dense scrub which 

 covers the whole island. In this vegetable detritus the little sphaero dactyls 

 were found abundantly. Big Swan Island is larger, perhaps two miles long by a 

 mile wide, and is now permanently inhabited by the wireless operators of the 

 United Fruit Company and some Cayman Islanders who work in the extensive 

 cocoanut groves. There is still some heavy virgin scrub on Big Swan of the same 

 character as that found on the lesser island. 



24. SPHAERODACTYLUS N0TATU3 Baird. 



Plate 3, fig. 3; Plate 20, fig. 5-8. 



Sphoerodadylus notatus Baird, Proc. Acad. nat. sci. Phil., 18.58, p. 254. 



Type-locality: — Key West, Fla. 



Types: — U. S. N. M. 3,215. W. H. B. Thomas; two specimens catalogued 

 by S. F. Baird are apparently lost. 



