252 SPHAERODACTYLUS. 
dorsal zone of smaller scales; snout very short; head broad and swollen; three 
large supralabials. 
Description:— Typr. Snout short, rounded, steeply declivous; eye dis- 
tinctly nearer tip of snout than ear; rostral small with a median groove; nostril 
between rostral, first supralabial, a very large supranasal and one small scale; 
one small scale followed posteriorly by two separate the two supranasals; the 
third large supralabial extending well back of the centre of the eye; superciliary 
spine present but very small; head above and on sides covered with rather large 
granular scales only very slightly enlarged on the snout; scales of back very 
large, imbricate, keeled, only about four equalling the distance of tip of snout 
from centre of eye; mental medium, larger than rostral; a distinct postmental 
followed by a number of enlarged scales; gulars rather large in comparison with 
other members of the genus; ventrals rounded, imbricate, smooth, scales of 
limbs small pointed, keeled; tail missing. 
Colour: — Dark brown, with a light collar anterior to the interscapular 
region; head with faint darker longitudinal markings; slightly lighter brown 
beneath. 
Remarks:— Apparently this peculiar and very distinct species is only known 
from the type-specimen. It is strange that the recent extensive collecting in 
Jamaica has not rediscovered it. Recently, Dr. Witmer Stone writes me that 
“during the forties” several collections of reptiles from Jamaica were presented 
to the Philadelphia Academy by Dr. C. W. Pennock. Whether he collected 
them himself or secured them from someone else is not disclosed by the records. 
One of these early collections contained the type of this species. 
21. SPHABRODACTYLUS RICHARDSONII Gray. 
Plate 5, fig. 3; Plate 19, fig. 1-4. 
Sphaerodactylus richardsonii Gray, Cat. lizards Brit. mus., 1845, p. 168. 
Sphaerodactylus richardsonit Boulenger, Cat. lizards Brit. mus., 1885, 1, p. 227, pl. 18, fig. 6. 
Type-locality:—‘‘ America.”’ 
Type:— A single specimen in the British Museum. 
Distribution:— This, the largest and most striking member of the genus is 
confined to Jamaica. It has been found in many scattered localities all in the 
lowlands or on the lower hills. It is very rare. 
Diagnosis:— Very large, cross-barred; of the large keeled imbricate dorsals 
only about five equal the distance of tip of snout to centre of eye and there is no 
granular middorsal row. 
