A PRELIMINARY REVISION OF THE GENUS DOCIOSTAURUS. 407 



This species is very well characterised by numerous morphological features, and 

 is quite easy to recognise. It is not very variable in dimensions and little more so 

 in coloration, but all the morphological characters are very constant. 



Geographical Distribution. D. kraussi is distributed all over the Kirghiz Steppes 

 {north from the Caspian Sea), Turkestan, Transcaspia, Eastern Ciscaucasia and South- 

 western Siberia. In the latter country it is one of the commonest grasshoppers, 

 being sometimes very injurious to pastures and corn crops. 



A suppleme7it to the synonymy of Dociostaurus maroccanus, Thunh. 

 In the course of rearranging the collection of Locustidae in the British Museum, 

 I came across the type of Epacromia oceanica, Walker (Cat. Derm. Salt. Brit. 

 Mus., iv, p. 779, No. 26, 1870), which has been included by Kirby (Syn. Cat. 

 Orth., iii, p. 193, No. 12) in the genus Chortoicetes, but is undoubtedly con- 

 specific with D. maroccanus. The type specimen of E. oceanica bears the label 

 " Sandw. I., Beechey " ; but there are in the British Museum a few more un- 

 doubtedly palaearctic species bearing the same label, and the only explanation is 

 that these specimens have been taken during Capt. Beechey 's journey from 

 Europe, via the Canaries, to the Sandwich Islands, most probably at the Canaries 

 or at Madeira, and that they have been wrongly labelled. 



