THE HERPETOLOGY OF HISPANIOLA 25 



have no close allies now existing on this island. Those that can be 

 readily grouped together are glandulifer, darlingtoni, and glandu- 

 liferoides, all possessing a heavy gland in the groin, with other glands 

 on posterior femur and elsewhere. Such glands are not known in 

 any other West Indian members of the genus. The only two forms 

 with notched toes,flavescens and poolei, also obviously belong together, 

 while jugans and ventrilineatus, from mountaintops at the opposite 

 ends of the same range, may almost rank as subspecies because of 

 their very close resemblance, in spite of the reduction of vomerine 

 teeth in ventrilineatus and its slightly different ventral pattern. The 

 largest species on the island, inoptatus, does not seem to have a close 

 relative there, although its vomerine teeth are similar to those of 

 ruthae and schmidti. These and some of the remaining species can 

 be arbitrarily separated into one group having the belly skin smooth, 

 while the others have granular skin at least posteriorly. 



There are undoubtedly still other forms of this varied and in- 

 teresting genus to be discovered on Hispaniola, the biological explora- 

 tion of which is still very far from being complete. 



KEY TO ELEUTHERODACTYLUS OF HISPANIOLA 



a 1 . A spinelike tubercle on upper eyelid inoptatus (p. 27) 



a 2 . No spinelike tubercle on upper eyelid. 



ft 1 . Snout shovel-shaped ruthae (p. 31) 



b 2 . Snout normal in shape. 



c 1 . Digits swollen at tips but not distinctly enlarged. 



d 1 . Vomerine teeth strongly developed; belly with large light 



and dark spots jugans (p. 33) 



d 2 . Vomerine teeth weak; belly with fine light and dark 



spots ventrilineatus (p. 35) 



c 2 . Tips of digits enlarged into definite disks. 

 d l . Toes and fingers conspicuously notched. 



e 1 . Vomerine teeth heavy; tympanum two-thirds eye 



diameter flavescens (p. 37) 



e 2 . Vomerine teeth weak; tympanum one-half eye diam- 

 eter poolei (p. 39) 



d 2 . Toes and fingers rounded at tips. 



e 1 . Heavy glands in groin, on posterior femur, and near 

 forearm in adult. 



/'. Adpressed heel reaching tip of snout glandulifer (p. 42) 



p. Adpressed heel not reaching beyond eye. 



g x . Disk of third finger covering more than half 



tympanum darlingtoni (p. 43) 



g*. Disk of third finger covering less than half 



tympanum glanduliferoides (p. 45) 



22G849— 41 3 



