PREOCCUPIED GENERIC NAMES. 143 



G. iaiiierlana, Burr (Mongolia); Ct. obs^cura, Walker {= tpatiosa, 

 Brunner) (Korea and China) ; (r. viicado (lecte mikado), Burr (Japan); 

 6r. bKeri/eri, Haan { = »ii(tsohito, Burr) (Japan). 



After a few remarks on the geographical distribution, there follows 

 a synoptical table of these ten species known from the Eurasian 

 continent, first in Russian and then in Latin. The article is closed 

 by a list of works referred to. As a brief synopsis of a most 

 interesting genus, it is a useful contribution to our knowledge of the 

 Decticidae. 



Dysstroma concinnata, Steph., a valid species. 



By LOUIS B. PBOUT, F.E.S. 

 In my recent investigations of the genus (I know our editor will 

 not allow me to say "subgenus") Di/sstroma, }iiih. = Pub/phasia, Steph., 

 I have discovered that the so-called " Arran tnmrata " fulfils all the 

 requirements of a valid species. By the kind help of ^Ir. W. Smith, 

 of Paisley, in supplying me with material and notes, and of Mr. F. N. 

 Pierce, in examining the genitalia, I have been able to get some light 

 on the Arran forms, and, although details may be reserved until the 

 publication of a paper which I have recently read before the City of 

 London Entomological Society, it seems desirable to put on record at 

 once that, whereas typical 7). truncata and typical D. imnianata from 

 Arran agree entirely in their genitalia with those from other parts, 

 four D. concinnata (constant /«?<')• sc) show a difference of structure, the 

 spines on the ngdoeagus being intermediate between those of the other 

 allies, or nearer to those of D. inniianata. Of course it has long been 

 known that the race is quite constant, and, therefore, certainlj' breeds 

 true. The synonymy of the species is as follows : — Poli/pliasia con- 

 cinnata, Steph. [Cat. Brit. Ins., ii., p. 134, noni. niid.]. 111. Haiist., iii., 

 p. 229. Electra boreata, Curt. [Guide, col. 163, noin. nud.] , Brit. Ent., 

 xiii., fol. 603. Polyphasia russata var. concinnata , Westw., Brit. Moths, 

 ii., p. 38. [('idaria] russata var. consolidata, Gregs., Youwj Nat., vi., 

 p. 254 [nom. nvd. /). 



Preoccupied Generic Names. 



By J. W. TUTT, F.E.S. 

 It is said that only those who do nothing make no mistakes. 

 It appears to me that one has only to do a little to make a good many. 

 In The Xatural Histori/ of British Butterflies, vols, i and ii, it has been 

 necessary to create many new generic names. Among these, three are 

 preoccupied, and have to be renamed. They are as follows : — 



(1) Leechia, Nat. Hist. Brit. Butts., ii., p. 142 (type thalia), is preoccupied, 

 .sv'f Leech lA, South, Trans. Ent. Soc. Lond., 1901, p. 400. Leechia, Tutt (type 

 thalia), is, therefore, renamed Strymonidia (type thalia), see Nat. Hist. Brit. 

 Butts., ii., p. 48b. 



(2) Edwakdsia, Nat. Hist. Brit. Butts., ii., p. 142 (type w-album), is pre- 

 occupied, see EinvARDSiA, Quatrefages (1842). Edwarbsia, Tutt (type w-albu/n) is, 

 therefore, renamed Chattenkenia (type lo-album), see Nat. Hist. Brit. Butts., 

 ii., p. 483. 



(3) Langia, Nat. Hist. Brit. Butts., i., p. 314 (type telicanus) is preoccupied, 

 see Lancia, Moore, Proc. Zool. Soc. Lond., 1872, p. 567. Langia, Tutt (type 

 telica)nis) is, therefore, renamed EAYWARniA (type telicanus), see Nat. Hiit. Brit. 

 Butts., ii., p. 484. 



