5. xEciEs. 327 



teuding iu a nearly straight lino to tlie nares, with a slight thickening 

 opposite the front of the orbit ; a low, narrow postorbital ridge ; 

 no trace of tympanum. Digits of hands and feet enclosed in the 

 skin, leaving the longest median digit projecting; inner digits of 

 hands and feet rudimentary ; no metatarsal tubercles ; no tarsal fold. 

 Hind limbs short. Skin with minute tubercles ; parotoids very 

 small, subrotund. General colour black, above a little lighter, with 

 a few darker spots on each side ; sometimes a brown median dorsal 

 band. 



Costa Rica. 



5. NECTES. 



Pseudobufo, Tschudi, Batr. p. 87. 

 Nectes, Cope, Nat. Hist. Rev. 18G5, p. 103. 



Pupil horizontal. Tongue elliptical, entire and free behind. 

 Palate smooth. Nostrils directed upwards. Tympanum distinct. 

 Fingers free ; toes webbed, the tips not dilated. Outer metatarsals 

 united. No omosternum ; sternum a cartilaginous plate, ossified 

 along the centre. Diapophyses of sacral vertebra rather strongly 

 dilated. Terminal phalanges simj)le. 



Java. 



1. Nectes suhasper. 



Pseudobufo subasper, Tschudi, I. c. 

 Nectes subasper, Cojye, I. c. 



Lateral view of head. Upper view of head. 



Head rather small ; snout prominent, obliquely truncate ; loreal 

 regions nearly vertical : nostrils small, tear-shaped, close together 

 near the end of the snout, directed upwards ; upper eyelid rather 

 narrow ; interorbital space broad ; tympanum perfectly distinct, 

 three fourths the diameter of the eye. Fingers slender, pointed, 

 first shorter than second ; toes rather long, pointed, united to the 

 tips by a very broad membrane ; no subarticular tubercles ; two 

 very indistinct, flat metatarsal tubercles ; a rather indistinct fold 

 along the inner edge of the tarsus. The hind limb being carried 

 forwards along the body, the tarso-metatarsal articulation reaches 



