100 



jS. Toes free '). Two dermal ridges across 

 the palate. 



f. Tips of fingers and toes dilated. 



Tongue narrow 14. Choerophryne p. 1 36. 



ff. Tips of fingers and toes dilated. 



Tongue large 15. Hylophorbus p. 137. 



ttf. Tips of fingers and toes not dilated. 



Tongue large 16. Aphaniophryne p. 145. 



7. Toes webbed at the base. One dermal 



ridge across the palate 17. Cophixahis p. 146. 



c. Palate unarmed. Tympanum hidden. 



«. Upper eyelids involved in a flap of skin. 18. Poviatops p. 147. 

 /3. Upper eyelid normal. 



f. Each palatine bone forming a pro- 

 minent ridge across the palate. 



Habit stout 19. Kaloula p. 147. 



ft- No such ridges. Habit slender . . 20. Microhyla p. 152. 



I. Liophryne Blgr. 



(BouLENGER, Ann. Mag. Nat. Hist., (6) XIX, 1897, p. il). 



Pupil horizontal. Tongue nicked and extensively free behind. 

 Two oblique series of vomerine teeth behind the level of the 

 choanae. Two transverse dermal ridges across the palate, in 

 front of the pharynx, the posterior one strongly denticulate. 

 Tympanum distinct. Fingers and toes free, the tips slightly 

 swollen or with small disks. Outer metatarsals united. 



Clavicles present '^), very slender ; no omosternum ; sternum 

 small. 



Distribution: New Guinea. 



Synopsis of the Species. 



A. Heel reaching the eye i. Z. rhododactyla p. 100. 



B. Heel reaching the shoulder. 



I. Tympanum 2/^ or ^/^ diameter of eye 2. Z. brevipes p. loi. 



n. Tympanum about '/g diameter of eye 3. Z. kampeni p. loi. 



I. Liophryne rhododactyla Blgr. 



Liophryne rhododactyla Boulenger, Ann. Mag. Nat. Hist., (6) XIX, 1897, p. 1 1, 

 pi. H, fig. 2. 



1) Webbed in Hylophorbus (?) neiihaussi. 



2) „Praecoracoid present, ossified" (Boulenger). 



