BEITISH AND FINNISH SPECIES OF ACRYDIUM. 241 



Cabera pusaria and O. exanthemaria in Deilinia. 



Ennomos, Tr., for Eugonia, Hiibn. 



Hygrochroa syringaria for Pericallia syringaria. 



Gonodontis hidentata for Odontopera bidentata. 



Opisthograplis luteolata for Rumia luteolata. 



Semiothisa, Hiibn., for Macaria, Curt. 



Hatia wauaria and H. hrunneata in Thamnonoma. 



Scodiona fagai'ia, Thnbg., for S. beJgaria, Hb. 



Perconia strigillaria for Aspilates strigillaria. 



Sarrothripus revayana for. S. undulana. 



Phraginatobia fuiiginosa for Spilosoma fidiginnsa. 



Parasemia plantaginis for Nemeophila plantaginis. 



Diacrisia sanio for Nemeophila russula. 



Callimorpha quadripunctaria, Poda., for C. hera, Linn. 



Emydia striata and E. cribi'um in Coscinia. 



Hipocrita jacobcetB for Euchelia jacobacB. 



Miitochrista miniata for Calligenia miniata. 



Endrosa irrorella for Setina irrorella. 



Cybosia mesomella for Setina mesomella. 



Coinacla senex for Nudaria senex. 



(Enestis quadra for Gnophria quadra. 



Pelosia muscerda for Lithosia muscerda. 



Zygana purpuralis, Btiiniiich, for Z. pilosellcB, Esp. 



Z.jHipendulce var. hippocrepidis, Steph., renamed tutti, Rbl. 



PSYGHID^. 



Pachytelia villosella for Psyche villosella. 

 Stei'rhopterix hirsutella for Psyche hirsutella. 

 Fuinea casta, Pall., for F. inter medieUa, Brd. 

 Bacotia sepium for Fumea sepium. 



Hepialid^. 

 Hepialus fusconebulosa, De Geer, for H. velleda, Hb. 



ON THE BRITISH AND FINNISH SPECIES OF THE 

 ORTHOPTEROUS GENUS ACRYDIUM, Geoffroy, Kirby 

 {=TETRIX, Latr.). 



By G. W. Kirkaldy, F.E.S. 



In Finland there are four species of Acrydium {=Tetrix= 

 Tettix), of which two are British. As one very probably, and 

 one possibly, of the other two may occur in Britain, and as 

 the genus has been treated comparatively briefly in the latest 

 notices,* a remme of a paper on the Finnish species by J. Sahl- 

 BERG* may be of interest to British entomologists. 



The larvae, beyond their softer texture, have all their appen- 



* J. Sahlberg, 1893, " Om de finska arterna af orthopterslagtet Tettix, 

 Charp.," in ' Ofverstryck ur Sallsk. pro Fauna Fennica Medd.' pp. 43-8 ; 

 M. Burr, 1897, ' Britit^h Orthoptera,' pp. 46-7 ; Burr, 1898, Entom. p. 127 ; 

 W. J. Lucas, 1901, Entom. p. 166, pi. iii, 



