184 PROCEEDINGS OF THE ACADEMY OF 



Liocephalus macropu s. 



Head plates broad, smooth or keeled ; first internasal not touching rostral. 

 Six or seven supraoculars. Labials six six ; cheek plates rather small ; four 

 marginal auriculars ; postauriculars granular. Nuchal rows nineteen. Crest 

 low, equal. Tail nearly cylindrical. Posterior extremity quite or nearly 

 reaching end of muzzle. Dimensions of largest specimen : from muzzle to vent 

 2 in. 9 1. ; from vent to end of tail 4 in. 3 1. 



Above olive, often with a metallic lustre ; sometimes brownish. A trans- 

 verse interscapular and crural pale-bordered spot, which is often indistinct. 

 A blackish band extends from the orbit to the groin, mostly varied with white 

 near the axilla obsolete posteriorly. Beneath yellowish or greenish, the 

 gular region sometimes streaked with black. 



Hab. Eastern Cuba. Mr. Chas. Wright has sent specimens to the Smith- 

 sonian Institution, which has presented some to the author. 



This species is much like the L. vittatus, but differs in the greater 

 breadth and smoothness of the head-plates, especially of the supranasals and 

 frontonasals, and in the granular nature of the scales for some distance pos- 

 terior to the auricular opening; its size is less, more resembling the ravi- 

 c e p s in this respect. 



The species first named by Dr. Edw. Hallowell, as Holotropis vittatus* has 

 been apparently mistaken by Dr. J. E. Gray for the L. schreibersii (Pris- 

 tinotus schreibersii Gravenhorst). The head plates are very lanceolate, and 

 strongly keeled, the crest low and equal. It is perhaps the most abundant 

 species of the genus in Cuba, though the carinatus only is represented in 

 de la Sagra's work, where it is called Holotropis microlophus. The latter spe- 

 cies resembles yet exceeds the mac r opus in the breadth of its head-plates : 

 they further differ in being perfectly smooth. 



Liocephalus melanochlorus. 



Head scales more or less keeled, numerous ; anterior extremities of supra- 

 nasals cut off, sometimes three anterior internasals ; always four prefrontals. 

 Six supraorbitals ; interparietal lanceolate. Labials six-'-six. Two prominent 

 marginal auriculars ; postauriculars squamous. Scales of the back large, the 

 keels unusually strong ; nuchal rows eleven. Crest well developed, highest 

 on the tail. Tail compressed, the scales of the lower surface keeled. Poste- 

 rior extremity reaching the orbit. Length from muzzle to vent 3 in. 7 lin. ; 

 from vent to end of tail 7 in. 



General color light green, principally appearing above in two dorsal bands 

 and in the interspaces of a series of about ten transverse black bands ex- 

 tending between them. These become more or less confluent in old males, as 

 do also sometimes the vertical bars on the sides, which are often present. 

 Top of head brownish. Posteriorly beneath spotted with greenish white 

 scales ; gular region coarsely reticulated with black. Extremities dusky green 

 above. 



Hab. Hayti, near Jeremie. Mus. Compar. Zoology, Cambridge, Mass. 

 Dr. D. F. Weinland. 



Tretioscincus castanicterus. 



Char. gen. Scales large, those of the tail and median dorsal rows keeled. 

 Supranasals none. Internasal broad ; but two supraoculars ; interparietal 

 large. Gular region covered by the large infralabials. Inferior eyelid with a 

 transparent disc. Extremities moderately developed, digits unequal, four 

 five. A series of femoral pores medially separated. Tail cylindrical. 



Char, specif. Sixteen rows of scales on the body, of which the median 

 dorsal pair are weakly keeled posteriorly ; on the crural region the included 

 rows are all keeled ; the carina? are stronger on the tail. Two large marginal 



* Proc. Acad. Nat. Sci. Phila. 



[April, 



