( 346 ) 



IX. Third Paper on the Tetriginae (Orthoptera) in the 

 Oxford University Museum. By J. L. Hancock, 

 M.D., F.E.S. 



[Read March 2nd, 1910.] 



Plate XLIX. 



The present studies are mainly founded on a series of 

 forty-seven specimens of Tetriginae (Orthoptera) recently 

 acquired by the Oxford University Museum. I am indebted 

 to Professor E. B. Poulton and Mr. R. Shelford for the 

 privilege of examining them. They have enabled me to add 

 supplemental data to my two former papers published in 

 the Transactions of the Entomological Society of London. 

 These studies are made still more complete by the 

 inclusion of notes founded on material in my private 

 collection. 



The section Cladonotae is represented by ten known 

 genera in Africa ; the following diagnostic table based on 

 their distinctive characters may prove useful in separating 

 them. Bolivar* recognised in his " Essai " (1887) species 

 belonging to three genera, namely : Xerophyllum, Trachy- 

 tettix, and Pantelia. Later Karschf (1890) added species 

 of Acmophyllum, Trypophyllum, Hippodes, Hypsaeus, and 

 still later Piezotettix,% making eight genera recognised up 

 to that time. I have recently added another genus, Clado- 

 ramus,§ and in the present paper supplemented a new one, 

 Medinophylhim, bringing the whole number up to ten now 

 known and differentiated in the table herewith presented. 

 In each genus the type is given. The genus Hypsaeus 

 and Piezotettix also occur in the Oriental region, while the 

 other eight genera are confined to Africa. 



* Ann. Soc. Entom. Belg. xxxi, 1887. 

 t Entomol. Nachricht. 1890. 

 X Berl. Entom. Zeit,, xxvi, p. 196. 

 § Trans. Entom. Soc. London, p. 217, 1907. 

 TRANS. ENT. SOC. LOND. 1910. — PART III. (NOV.) 



