On new South- A men can Batrachians. 427 



the tliird at the base of the caudal ; a fourth black spot 

 above the anterior rays of the anal. 



Total length 30 mm. 



Allied to B. trispilomimus, Blgr., from the Ogowe and 

 Lower Congo. 



Andersonia pellegrini. 



Depth of body 9 times in total length, length of head 

 6 times. Head li times as long as broad ; snout obtusely 

 pointed, as long as postocular part of head, 3 times as long 

 as diameter of eye, which is | interorbital width. Maxillary 

 barbel twice as long as inner mandibular, and f length of 

 head. Median occipital process 3^ times as long as broad, 

 narrower than and 1^ times the length of the laterals. 

 Dorsal I 6, twice as distant from end of snout as from caudal, 

 first ray as long as head. Anal 9. Pectoral f length of 

 head. Caudal peduncle a little more than \ of the total 

 length. 24 dorsal and 21 ventral scutes, the last 9 on 

 caudal peduncle. Greyish above, with four rather indistinct 

 dark bars across the back ; dorsal blackish in the distal 

 third. 



Total length 42 mm. 



Closely allied to A. Ivptura, Blgr. Distinguished by the 

 smaller eye and the different proportions ot the occipital 

 processes. 



Named in honour of tlie distinguished author of the 

 ' Poissons du Bassin du Tchad.' 



XLI. — Descriptions of new South- American Batrachians. 

 By G. A. Boulengek, F.R.S. 



(Published by permission of the Trustees of the British Museum.) 



Phyllobates Hngsburyi. 



Head slightly longer than broad. Snout rounded-sub- 

 truncate, projecting beyond the mouth, as long as the orbit ; 

 loreal region vertical ; nostril nearer the tip of the snout than 

 the eye; interorbital space broader than the upper eyelid; 

 tympanum very distinct, half the diameter of the eye, 3 to 4 

 limes its distance from the latter. Fingers moderate, first 

 and second equal, or first slightly the longer ; disks rather 



31* 



