( S4C ) IX. Third Paper on the Tetriginae (Orihoptera) in the Oxford University Museum. By J. L. Hancock, M.D., F.E.S. [Rciid Marcli 2iul, 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 coinplete 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 : Xcrophyllum, Trachy-tettix, and Pantelia. Later Karschj-(1890) added species of Acmophyllum, Trypophyllum, Hippodcs, Hypsaeus, and still later PiezoteUix,X 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, Medinophyllmn, 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. L(mdon, p. 217, 1907. TRANS. ENT. SOC. LOND. 1910. — PART III. (NOV.)
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