C4 ON THE TOADS OF THE GEXUS NECTOPHRYNE. [Jan. 16, 



of the body. A dark streak from the end of the snout passing 

 below the canthus rostralis, through the eye, and above the tym- 

 panum to the commissure of the mouth. Loreal region brown ; 

 a light spot below the eye between yellowish-brown parts of the 

 upper lip. Limbs brownish in colour, with darker markings 

 arranged in indistinct large cross bars. Sides of the body below 

 the dnrk lateral band lighter than the back, more or less speckled 

 with dai-k brown. Sometimes a yellowish-brown vertebral stripe 

 extending along the middle of the back, from snout to vent. 

 Beneath entii'ely white or with a few small dark spots on the 

 throat and belly. 



Hah. Ukami, German East Africa. 2 specimens. 



Dimensions. — From snout to vent, 27 mm. ; hind limb, 38 ; 

 fore limb, 20 ; length of head, 9 ; breadth of head, 9-5. 



Named after my colleague. Dr. Tornier of Berlin, who has 

 added much to our knowledge of the herpetological fauna of 

 German East Africa. 



The figured specimen of this new species is preserved in the 

 herpetological collection of the Basle Museum, the other has been 

 presented to the British Museinn. 



If we now consider the geographical distribution of the genus, 

 we notice that most of the species described ai-e from Southern 

 Asia. Borneo is particularly rich, Not less than six species 

 have been found on this island, and one of them has been found 

 also in the Natuna Archipelago (Sirhassen) and Singapore. New 

 discoveries will most likely further extend the geographical dis- 

 tribution of the other species. But we cannot omit to state the 

 fact that up to this date no Nectopliryne has been discovered, so 

 far as we know, in the other great islands of the Sunda Archipelago. 



The genus Nectophryne has representatives also in West Africa. 

 The faunal similarity of that distiict with the south-east of Asia 

 has often been noticed (see Wallace). West Africa possesses two 

 species, and the new species described above shows that the genus 

 is also represented in the eastern part of the African continent. 



I conchide with a synoptic table for the determination of the 

 known species of Nectophryne, not taking into consideration 

 doubtful species, as e. g. Nectophryne sundana (Ptrs.) (Boulenger, 

 Cat. Batr. Sal. p. 281). I have not been able to examine the only 

 existing specimen of this species, which is preserved in the Berlin 

 Museum and comes from Borneo. 



Key for the deterrnincction of the Species. 



I. Fingers strongly webbed, verj' sligbtly dilated at the end, the 



inner quite rudinientarj'. 



a. 8iibarticular tubercles present, similar to small lamelliB ... N. afra. 



b. Subarticular tubercles absent N. niisera. 



II. Fingers partially webbed, more or less dilated at the end, 

 the inner well developed. 



A. TiI)io-tarsal articulation not reaching the end of the snout. 



a. Toes only half- webbed -A", loniieri. 



