458 REPORT OP NATIONAL MUSEUM, 1898. 



The American species of PliyUodmtylus dift'ei- as follows : 



I. Tubercles larger and more nniuerons, keeled: 



Abdominal scales in 30 transverse and 17 longitudinal rows; two postmentals 

 and four scales behind them P. ventralis O'Shaugbnessy. 



Longitudinal series uninterrupted; abdominal scales in 30 transverse and 21 

 longitudinal rows; 3 postmentals and 6 scales in the row behind them. 



P.jnlieni Cope.' 



Longitudinal series interrupted by scales; abdominal scales in 40 transverse and 

 25 longitudinal rows P. tuhercnlofius Wiegmanii. 



II. Tubercles fewer, smaller, and not keeled. 



Tubercles in rows; abdominal scales in 56 rows; 3 postmental scuta; disks 



larger P- (jf^ hipagomsis Peters. 



Tubercles in rows; abdominal scuta in 56 rows; 4 postmentals; disks very 



small P- inicrophyUiis Cope. 



Tubercles not in rows very distinct; mental large; 1 postmental; disks large; 



cross-banded P. mgrofasciatus Cope. 



Tubercles not in rows, more obscure; abdominal scuta in 50 rows; two or three 



postmentals; disks larger; cross- banded P. incuqualis Cope. 



III. Tubercles wanting. 



Dorsal scales in 36 rows; larger than those of muzzle, which are but little larger 



than those of occiput; 5 cross-bands between axilla and groin.. P. uuctiis Cope. 



Dorsal scales one-fourth as large as those of belly, minute; reddish-brown, 



darker speckled - /'. Icei Cope. 



Of the above species but two, the P. tuberciilosus and the P. unctm, 

 are found within the limits of the uearctic realm, and these only in its 

 extreme southwestern regions. Besides them, Boulenger records five 

 species from Africa and Madagascar, five from Australia and adjacent 

 islands, and one from the islands of the Mediterranean Sea west of 

 Italy. P. galapagomsis and P. leei are natives of the Galapagos 

 Islands, and P. microphyllus, nu/rofasciatux aud incequaUs are from 

 western Peru. P. juliem is from Aruba, aud P. ventralis from Nica 

 ragua (Boulenger). 



PHYLLODACTYLUS TUBERCULOSUS Wiegmann. 



Phyllodactyltis tuherculosns Wiegmann, Nova Acta Acad. Leop. -Carol., XVII, 

 1835, p. 241, pi. XXIII, fig. 2. — Dumkril and Bibkon, Erp. G6n., 1836, III, p. 

 396.— Gray, Cat. Liz. Coll. Brit. Mus., 1845, p. 150.— Aug. Dumekil, Cat. 

 M6th, Coll. Kept. M. P., 1851, p. 40; Arch. Mus,, 1856, YIII, p. 465.— Baihd, 

 U. S. Mex. Bound. Sur., 1859, p. 12, pi. xxiii, fig. 1-8.— Bocourt, Miss. Sci. au 

 Mex. Rept., 1873, p. 43, pi. x, fig. 3.— O'Shaughnessy, Ann. Mag. Nat. Hist. 

 (4), XVI, 1875, p. 262.— Boulenger, Cat. Liz. Brit. Mus., 1885, 1, p. 79. 



Phyllodactylus tnhcrculaUts Gray, Cat. Liz. Brit. Mus., 1845, p. 150. 



Discodactylus iuberculosiis Fitzinger, Syst. Rept., 1843, p. 96. 



Phyllodactylus xantii Coi'E, Proc. Acad. Nat. Sci. Pliila., 1863, p. 102. 



Back with ten or twelve series of Ifirge trihedral tubercles among 

 the smaller granulation. A large mental plate, acutely angled behind. 

 Hind leg contained nearly two and one-half times in head and body, 

 reaching forward halfway to the eye. Hind foot about as long as the 

 tibia; contained seven times iu the head and body. Head to ear con- 

 tained three and one-fifth times iu head and body. 



' P. Martini Van Lidth de Jeude, Notes Ley den Mus., IX, p. 130. 



