DIAGNOSIS OF A NP:W SPECIES OF IGUANOID LIZARD 

 FROM GREEN CAY. BAHAMA ISLANDS. 



By Leoniiak]) Stejneger, 



Curator, Dirmon of JicptUes and Batrudtuinn. 



Three species of Leiocephalm have thus far been recorded from the 

 Bahamas, viz: L. .^chn'ihersii., loxogrammus, and carhiatus. The first 

 two belong- to a group of the genus different from the one which 

 includes the species here described. Whether the L. carinatus 

 credited to the Bahamas is identical with the Cuban species or 

 whether it agrees better with our new form I am unable to say, for 

 lack of authentic material. A few specimens in the National Museum 

 (No. 4846), colle(;ted ])y Dr. Bryant in the Bahamas, seem to be true 

 L. carinatiiii. however. 



LEIOCEPHALUS VIRESCENS, new species. 



Diagnosiis. — Ventral scales smooth; outer parietals twice as large as 

 irmer; head shields nearly smooth: three pairs of prefrontals; lifth 

 toe, without claw, not more than half the length of head from tip of 

 snout to posterior edge of parietals. 



Type.—l^o. 26758, U.S.N.M. 



Ilabitat. — Green Cay, Bahamas. 



This new Lemcejyhahis^ which was collected April 12, 1886. by the 

 parties of the United States Fish Commission steamer Albatross, 

 visiting Green Cay. ])elongs to the group of species typified by the 

 Cuban Z. carinatus. It differs materially from that species, however, 

 in the shortness of its fifth toe, which is shorter than, or at most 

 equals, half the length of the shielded part of the head, measured from 

 the tip of the snout to the posterior border of the parietals. All 

 the scales of the body are, moreover, larger and much more pointed. 

 The caudal crest is particularly high and well developed. The colora- 

 tion also seems to differ somewhat as, in addition to the dusky dorsal 

 cross bars, there is a light dorso-latcral line from the supraoculars to 

 the base of the tail, and a similar but broader one from the temples 

 to the groin, with a broad dusky band between them. 



T\velve additional specimens testify to the constancy of the characters 

 displayed by the type. 



Proceedings U. S. National Museum, Vol. XXIII— No. 1219. 



471 



