Bittrachians from South Camcronn. 



o-2i 



tlcscrvos to bo made the type of a distinct genus, for which I 

 |iro|)o.se the name of SooGLOSSUS ; that I ovcrlookol the 

 ahsence of teeth in A. JJoeff(jeri, lil.i^r., and .1. lencomystax, 

 Jil^r., which must be referred to Cucosternum, BIgr., and 

 Cardioglossn^ MV^r., respectively; and that, to my great 

 surprise, the specimens of -4. fl//-ica/iMS (^Iletero'jlossa africana^ 

 Hallow., A. f/dhonensis, }t\ocq., A. verrucosus, W^erner) col- 

 lected by ^Ir. Hates have shown the males to be provided 

 with a powerful dentition in the lower jaw. This tact, to- 

 gether with the presence of a deep groove between the outer 

 metatarsals, whicli in the typical Art/irolej)lis are completely 

 bound together, justifies the estal)li.shment of a new genus, 

 DlMOKiMlOGNATHL'S, for J/etero(/Iossa africana, the generic 

 name projioscd by llallowidl being preoccupied. 



Fijr. 2. 



Upper and lower jaws and pectoral pirdle of Dinwrphoffnathus africana, (^ . 



The mandibular dentition of Dimorphognaihus africana 

 consists of a very large fang in front, followed by ten or 

 eleven smaller sharp acrodont teeth, of unequal size. 

 'Jhis discovery further enijjhasizes the artificial nature of the 

 dentition as a family ciiaracter in the Tailless Batrachians ■*. 

 The fact that the extraordinarily lengthened and serrated 

 third finger of the male occurs both in Arthroleptis and 

 CarJioglossa shows these two genera to be closely allied. 

 C'ardioglossa is simj)ly a tootliless Arthroleptis, just as 

 JJendrohates may be described as a toothless Phyllobates. 



I may add that the maxillary teeth of J ) imorphognathus 

 africana are longer than in most frogs, and that the praj- 

 coracoids (clavicles) are remarkably slender ; the bony style 

 of the omosteruum is forked at the base. 



Cardioglossa elegans. 

 '^^' allied to C. leucomgsta.r, but fingers and toes more 



•^ore distinctly dilated at the end, and inner 



these 'Annals,' (H) i. 1668, p. 186, and (7) xii. 



