284 ANGUIDE. 
3. DIPLOGLOSSUS. 
Diploglossus, Wiegm. Herp. Mex. p. 86; Dum. § Bibr. v. p. 585; 
Gray, Cat. Lis. p. 119; Bocourt, Miss. Se. Mex., Rept. p. 375. 
Celestus, Gray, Ann. N. H. ii, 1839, p. 288, and Cat, Liz. p. 117; 
Cope, Proc. Ac, Philad. 1868, p. 128. 
Microlepis, Gray, WU. cc. pp. 334 & 116. 
Camilia, Gray, Cat. Inz. p. 118. 
Oneyda, Gray, J. c. p. 119, 
Siderolamprus, Cope, Proc. Ac. Philad. 1860, p. 368. 
No lateral fold. Scales roundish-rhomboidal, arranged quincun- 
cially on the back, forming more or less regular vertical series on the 
flanks. Limbs well developed, pentadactyle. Teeth with conical 
or subspherical crowns. Palate toothless. 
Tropical America. 
Synopsis of the Species. 
I. Digits terminating in a large compressed sheath, into which 
the claw may be entirely or nearly entirely retracted. 
A. Frontal anteriorly in contact with two or three shields. 
37 to 39 scales round the middle of the 
body; dorsal scales with an obtuse 
median keel 1... ..... 0. cece 1. monotropis, p. 285. 
40 to 44 scales round the middle of the 
body ; dorsal scales without a median 
Reel. cinco ss vos nis Sos 3. fasciatus, p. 287. 
54 scales round the middle of the body. 4. mallepunctatus, p. 288. 
B. Frontal anteriorly in contact with a single shield. 
87 scales round the middle of the body. 2. bilobatus, p. 286. 
II. No large ungueal sheath ; frontal anteriorly in contact with 
a single shield. 
A. Fore limb as least as long as the skull. 
1. Two pairs of shields between the rostral and the azygos 
prefrontal. 
a. Frontal not twice as long as broad. 
a. Interparietal as large as parietals; caudal scales 
strongly keeled, the keels forming continuous 
lines. 
36 scales round the body............ 5. rugosus, p. 288. 
