154 Annals of the Carnegie Museum. 



Family IGUANIDiE. 

 Genus Sceloporus Wiegmann. 



23. Sceloporus undulafus (Boie). Pine-tree lizard. 



This species is rare and hard to find in this locality. Two speci- 

 mens are in the collection of the Museum from Moon Township, one 

 from Dravosburg, and two from Wilmerding. One was collected 

 near Wilkinsburg in August, 1897. This lizard is hard to see when 

 flattened on a fence-rail, and also hard to catch on account of its 

 marvelous activity. The dorsal scales of this lizard are keeled. 



Family SCINCIDiE. 

 Genus Eumeces Wiegmann. 



24. Eiiincces fasciafiis (Linuneus). Blue-tailed lizard. 



Two specimens of this species were taken in a woods near Wilkins- 

 burg, August 17, 1899, and October 3, 1899. These are the only 

 records of this species for Allegheny County at hand. The dorsal 

 scales of this lizard are smooth. 



Order Chelonia. 

 Key to Local Families of Chelonia. 



A. Skin leather-like ; not laid off into definite areas by horn-like epidermal plates. 



T} iotiychidce. 

 A A. -Skin horn-like ; laid off into definite areas by epidermal plates. 



Marginals, twenty-fom- ; plastron of nine bones ; tail long. Chelydridce. 



Marginals, twenty-four ; plastron of eight bones ; tail short. Kinosternida. 



Marginals, twenty-five ; plastron of nine bones ; tail moderate. Testitdinidce. 



Family TRIONYCHID^. 



Key to Local Genera of Trionychid.e. 



Nostril with no papilla projecting into the lumen from the septum. Ainyda. 



Nostril with a papilla projecting into the lumen from the septum. AspiJonedes. 



Genus AMYDA Agassiz. 



25. Amy da miitica (Le Sueur). Spinele.ss soft-shelled turtle. 



A specimen of this species was taken at Neville Island, May 27, 

 1899. It must be very rare here. 



Genus ASPIDONECTES Wagler. 



26. Aspidonectes spinifer (Le Sueur). Spiny soft -shelled turtle. 



