BRITISH AND FINNISH SPECIES OF ACRYDIUM. 241 



Cabera pusaria aud C. exanthemaria in Deilinia. 



Ennomos, Tr., for Eugonia, Hiibu. 



Hygrochroa syringaria for Pericallia syringaria. 



Gonodontis hidentata for Odontopera bidentata. 



Opisthograptis luteolata for Runiia luteolata. 



Semiothisa, Hiibn., for Macaria, Curt. 



Halia wauaria and H. brunneata in Thamnonoma. 



Scodiona fagaria, Thnbg., for S. belgaria, Hb. 



Perconia strigillaria for Aspilates strigUlaria. 



Sarrothripus revayana for. S. undulana. 



Phragmatobia fuliginosa for Spilosoma fidiginosa. 



Paraseinia plantaginis for Nemeophila plmitaginis. 



Diacrisia sanio for Nemeophila russula. 



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



Emydia striata and E. crlbrum in Coscinia. 



Hipocrita jacobaa; for Euchelia jacobacB. 



Miltochrista miniata for Calligenia miniata. 



Endrosa irrorella for Setina irrorella. 



Cybosia mesomella for Setina niesomella. 



Comacla senex for Nudaria senex. 



(Enestis quadra for Gnophria quadra. 



Pelosia muscerda for Lithosia muscerda. 



Zygcena purpuralis, Briinnicli, for Z. piloaella, Esp. 



Z .JilipendiilcB var. hippocrepidis, Stepb., renamed tntti, Rbl. 



PSYCHID^. 



Pachytelia villosella for Psyche villosella. 

 Sterrhopterix hirsutella for Psyche hirsuteUa. 

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

 Bacotia sepiwn 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= 

 Tetti.v), 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 resume 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 ortliopterslagtet Tettix, 

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

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

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



