1902.] NATURAL SCIENCES OF PHILADELPHIA. 185' 



Lygosoma pellopleurum (Hallow.). 



Nos. 5,739, 5,740, 5,741. 



The largest measures 100 mm. Color: rather pale-brown, with 

 a narrow^ indistinct, dark vertebral line beginning on the neck, 

 and a wider lateral stripe beginning at the eye. 

 Eumeces marginatus (Hallow.). 



Eiyht specimens. 



No. 5,737 has two postmentals, and the third supraocular is 

 longitudinally divided. 



Ophidia. 

 Dinodon semicarinatus (Cope). 



Nos. 5,724, 5,725. 



The scales in the black crossbands are- mostly marked on their 

 centres with the pale ground color. 



The small basal keels and apical pits are barely distinguishable. 

 Lache&is flavoviridis (Hallow.). 



Eleven specimens; the largest measures 1,710 mm. (tail 272). 



BATRAOHIA. 



ECAUDATA. 

 Rana gracilis W^ieg. 



Seven specimens, the largest measuring but 48 mm. 



Rhacopliorus viridis (Hallow.). 



Folypetades viridis Hallow., Proc. Acad. Nat. Sci. Pliila., 1860, 

 p. 500. 



Nos. 5,718, 5,719, 5,720 are unquestionably to be referred to 

 this species, and as Hallowell's description is very meagre, I give 

 the full characters. 



Vomerine teeth in two slightly oblique series, beginning at the 

 inner anterior edge of the choanse. Head rather large; snout 

 short and blunt ; canthus distinct and rounded ; loreal region 

 slightly concave; nostril near the end of the snout; interorbital 

 space nearly twice the width of upper eyelid; tympanum two-thirds 

 the horizontal diameter of the eye. Fingers half, and toes two- 

 thirds webbed ; finger disks neai'ly as large as the tympanum, those 

 of the toes smaller; subarticular tubercles rather small; inner 

 metatarsal tubercle elongated; outer absent. Tibio-tarsal joint 

 reaches to the snout in the largest specimen and just beyond the eye 

 in the smallest. The skin on the back is smooth, on the belly and 



