26 i [April, 



ON CEETAIN BEITISH EEMIPTERA-nOMOPTERA. 



BT J0H:N^ SCOTT. 



Revision of the genus AcocephAlus, and descriptions of two species not hitherto 

 recorded as British. 



In the ' Entomologist's Monthly Magazine ' for 1865—1866, the 

 Rev. T. A. Marshall gives descriptions of the British species of 

 Acocephnlus as known to him, but the synonymy of some of them 

 requires transferring, and I simply proceed to show the changes 

 necessary. 



(Sub.) Family lASSINA, Stal. 

 Genus ACOGEFHALUS, Germ. 



1. A. rusticus, Fab., as described by Marshall is correct. It is ex- 



tremely variable in colour and size, so that innumerable varieties 

 have been described as species. Fieber cites 18 ; and probably 

 does not exhaust the list. 



2. A. hifasciatus, Lin. The references and description in this case 



are also correct. Fieber mentions five varieties of this insect which 

 have been described as species. 



3. A. aJhifi'ons, Lin. Marshall refers alhiger. Germ., to this spe- 



cies, but Fieber gives it as a variety of his pohjstolus, a description 

 of which will follow. 



4. A.rivuJaris,Gevvii. Yieher refers hisfrioniciis, Fall., to this species, 



and not to histrionicus, Fab., as stated by Marshall. 



5. A. Jiisfrionicus, Fab. AYith the above alteration, Marshall's de- 



scrijitiou and i-eferences are correct. 



6. A. arenicola, Marshall. Fieber, to whom I submitted one of Mar- 



shall's examples, returned it to me as only a var. of albifi'ons : 

 and with this opinion I confess I must agree. 



7. A. agrestis, Fab. Removed from this genus by Flor (followed by 



Fieber) to his genus Sfroiigglocqjhaltfs. There can be no doubt 

 about the correctness of the removal, as the most cursory glance at 

 the shape of the head will at once determine. The head in 

 Acocephalus is generally pointed, shovel-shaped and hollow on the 

 upper surface ; while that of S. agresfls is convex. 



Acocephalus intebeuptus, Fieb. 



NiGRiTUS, Kirschb. var. 



Dark pitchy-brown, not shining. 

 Head : pitchy-brown, deeply concave, with a central and two elevated side lines, 

 posterior margin yellow, anterior margin above finely spotted with yellow, be- 



