(33) 
OJSr BANA 0BNATI88IMA, Socage, AND B. BTJDDI, Blgr. 
By a. A. BouLBNGER, LL.D., D.Sc, F.E.S. 
{Published by permission of the Trustees of the British Museum.) 
Thanks to the kindness of Miss M. Wilman I have been able to examine 
the frog from Southern Rhodesia, which has recently been referred, with 
some doubt, to Bana ruddi by Hewitt and Power,* and which, from the 
notes of these authors, I suspected would prove to belong to a different 
species — a suspicion now confirmed by this examination, the specimen being 
referable to B. ornatissima. 
It may be useful to give comparative descriptions of the two frogs in 
order to avoid future confusion, and also to present, in synoptic form, the 
distinctive characters of the eight species which make up the very natural 
subgenus, restricted to Africa, named Hildehrandtia by Nieden (type : B. 
ornata, Peters), and which have never been properly contrasted before. 
Subgenus Hildebrandtia, Nieden, 
Vomerine teeth in small groups or short series touching the anterior 
corners of the choanae. Pingers and toes not dilated at the tips ; outer 
metatarsals bound together. Nasals narrow and widely separated from each 
other and from the frontoparietals ; ethmoid largely exposed above ; zygo- 
matic process of squamosal very short. Clavicles very slender, curved, 
widely separated from each other on the median line ; omosternal style not 
forked at the base. Terminal phalanges obtuse. 
Stout burrowing forms with strong, compressed inner metatarsal tubercle. 
Males with external vocal sacs. 
Synopsis of the Species. 
I. No dorso-lateral fold ; head 1 J times as broad as long ; snout broadly 
rounded ; tympanum larger than eye ; tibio-tarsal articulation reaching 
tympanum ; tibia 2f times in length of head and body ; toes barely \ 
webbed . . . . B. macrotympanum, Blgr., 1912 (Gallaland). 
II. A more or less distinct dorso-lateral glandular fold ; head not or 
but little broader than long. 
* 'Trans. E. Soc. S. Afr./ iii, 1913, p. 168. 
3 
