258 SPHAERODACTYLUS. 
Greatest width of head 4 mm. 
Fore limb 6.5 mm. 
Hind limb 8 mm. 
Remarks:— A small and very widely varying species. It is found both 
within and without human abodes, about equally common in both situations. 
Represented in M. C. Z. by large series from all parts of its range. 
25. SPHAERODACTYLUS ANTHRACINUS Cope. 
Plate 7, fig. 3; Plate 21, fig. 1-4. 
Sphaerodactylus anthracinus Cope, Proc. Acad. nat. sci. Phil., 1861, p. 500. 
Sphaerodactylus asper Garman, Bull. Essex inst., 1888, 20, p. 113.1 
Type-locality:— The original description stated that the type came from 
Mexico. This has been copied by Boulenger and others. It seemed at once 
highly improbable that a sphaerodacty] of this style should occur upon the main- 
land. The type-specimen was, therefore, carefully examined and found to be 
absolutely identical with examples from Andros Island in the Bahamas. It has 
not been rediscovered in Mexico and the locality is certainly erroneous. 
Type:— Academy Natural Sciences Philadelphia. 7,558. 
Distribution:— Only definitely known from Middle Bight, Andros Island, 
Bahamas. 
Diagnosis:— Very large, having large, imbricate keeled dorsals beginning 
far forward on the neck, even enlarged on the postaural regions; about six of 
largest equal to distance from tip of snout to middle of eye. A middorsal zone 
of fine granules, five supralabials to below centre of eye, median head-scales not 
enlarged, much smaller than scales of snout. Head very narrow and flat. 
Description:— M. C. Z. 6,222. 
The larger Coryps of asper Garman. Snout long and narrow and depressed; 
eye distinctly nearer ear than tip of snout; rostral large with a median groove; 
nostril between rostral, first supralabial, a large squarish supranasal and two 
small scales; the supranasals of each side separated by two small scales, or often 
one large one; fifth supralabial, a small one, below centre of the eye; superciliary 
spine well developed; head above and on sides covered with tiny granular scales, 
distinctly enlarged on the snout; scales of neck much enlarged passing directly 
into the very large, heavily keeled, tectiform dorsals of which six of the largest 
1 Types: — M. C. Z. 6,222 Bahamas: Andros Island. C. J. Maynard. 2 Cotypes. 
