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X. A Monograph of the genus Acrida, Stal ( = Truxalis, 

 Fabr.), with Notes of some allied genera, and 

 descriptions of new species. By MALCOLM BuRR, 

 B.A., F.L.S., F.Z.S, etc. 



[Read March 5th, 1902.] 



The following revision of the genus Acrida, Stitl, better 

 known as Truxcdis, Fabr. (usually, and incorrectly, spelt 

 Tryxalis), with the notes on certain allied genera, was 

 written nearly eighteen months ago, when it was my 

 intention to so revi.se the whole of the family Truxalid^. I 

 do not, however, at present see my way to completing the 

 work, and so publish now the results of a study of the genus 

 Acrida, Still, which badly needed recasting, together with 

 descriptions of a few new species of other genera, and a 

 revision of the genus Gelastorrhinus, Br., which was pre- 

 viously ranged not in the TruxalidiB, but in the Acri(^iidie ; 

 these were at tlie time taken in the stride in due course 

 when studying the genera in order. I have, moreover, 

 refrained from including notes upon the American genera, 

 which have been well done by McNeill, Scudder, Brunner 

 and others, especially as the latter author has been, and 

 is still, occupied with these genera. Some of the African 

 genera given in the synoptical table, are not otherwise 

 referred to, for there is nothing as yet to add to the 

 original descriptions of Karsch. 



1 have received help and assistance from various corre- 

 spondents, but am especially grateful to Herr Hofrath 

 Dr. C. Brunner von Wattenwyl, upon whose suggestion 

 and kindly invitation, I originally went to Vienna to work 

 at the TriLxalidce of his extremely rich collection. All 

 the wealth of this finest of collections of Orthoptera were 

 placed freely at my disposal, and much help and advice 

 I received from this most experienced and distinguished 

 entomologist. 



Literature. 



The following is a list of the chief works quoted. 

 Smaller papers which are referred to, but not included 

 in this list, may be found in the list of works quoted by 



TRANS. ENT. SOC, LOND. 1902. — PART IL (JUNE) 



