284 ANGTJID^. 



3. DIPLOGLOSSUS. 



Diploglossus, Wiegm. Herp. Mex. p. 36 ; Dum. Sf Bib): v. p. 585 ; 



Grmj, Cat. Liz. p. 119; Bocourt, Miss. Sc. Mex., Rept. p. 375. 

 Celestus, Gray, Ann. N. H. ii. 1839, p. 288, and Cat. Liz. p. 1 17 ; 



Cupe, Proc. Ac. Philad. 18G8, p. 123. 

 Microlepis, Gray, II. cv. pp. 334 & 116. 

 Camilla, Gray, Cat. Liz. p. 118. 

 Oneyda, Gray, I. c. p. 119. 

 Siderolamprus, Cope, Proc. Ac. Philad. 18G0, 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. monotropis, p. 285. 



40 to 44 scales round the middle of the 



body ; dorsal scales without a median 



keel 3. fasciatus, p. 287. 



54 scales round the middle of the body . 4. millepximtatus, p. 288. 



B. Frontal anteriorly in contact with a single shield. 



37 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 

 prsefrontal. 



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. rur/osus, p. 288. 



