1915.] NATURAL SCIENCES OF PHILADELPHIA. 133 



The specimens were remarkably uniform in both comparative 

 and in actual measurements, the differences being chiefly in general 

 body and tail lengths, rather than in variation in size of limbs or in 

 distances between fixed points. 



In the discussion of the plates and scales of this species it should 

 be noted that Cope's description^^ is most unsatisfactory, the ter- 

 minology being confused, if not actually inaccurate. 



The description given by G. A. Boulenger in his Cat. Lizards Brit. 

 Mus., 1887, Vol. Ill, p. 263, proved the most useful and accurate. 



In the Okefinokee specimens the dorsal plates of the head are 

 absolutely uniform and may be described as follows: 



E-ostral short; internasal pentagonal; nostrils piercing nasals; 

 no supranasals; frontal in contact anteriorly with internasal, and 

 two prefrontals widely separated posteriorly from interparietal by 

 two broad frontoparietals; interparietal kite-shaped, much longer 

 than wide; parietals 2; supraorbitals 4; superciliaries 7; superior 

 labials 7. 



Little data were obtainable regarding the life history of Lygosoma 

 laterals. No eggs were found. 



13. Plestiodon quinquelineatus Linn. Fig. 4. 



Common throughout the higher portions of the swamp and on 

 the islands. Seemed to be particularly fond of deserted buildings 

 and chimneys where any such structures occurred, and often found 

 aloHg fences. The larger forms were called by the local names of 

 "red-headed scorpion" and "red-headed lizard," while the smaller 

 striped forms seemed to have no common local name, being probably 

 confused by the natives with Cnemidophorus sexlineatus Linn. 

 Plestiodon quinquelineatus was seldom seen on the ground or on the 

 trees, but was often found stretched out in the sun on dead logs, 

 stumps or fallen timber. 



Although this was one of the most common of the lizards noticed 

 in the Okefinokee, comparatively few specimens were collected on 

 account of the fact that their habits made it a difficult matter to 

 secure them, since they clashed into crevices and holes or darted 

 along the fences or into the brush on the least provocation. They 

 were abundant in the deserted log buildings on Billy's Island and 

 were seen in large numbers in and around the old, abandoned house 

 on Mixon's Hammock, where they scurried over the ruined floor and 

 over the decayed timbers of the walls, only to dart into the cracks 



18 Rept. U. S. Nat. Museum, 1898, p. 622. 



