GEOMETRA. 209 



This genus, with its stout body and dentated wings, repre- 

 sents a somewhat different group of the family to which it 

 belongs than the other species which are here noticed. 



It is curious that neither of the types assigned to Geometra 

 by Leach are admissible; for Plagodis dolabraria was not 

 described by Linnaeus till 1767; and Eutrapela lunaria, 

 Denis & Schiffermiiller, was not a Linnean species ; but 

 Stephens, while excluding P. dolabraria, employed Geometra 

 to include E. lunaria, and various allied species, including 

 G. alniaria, a Linnean species of 1758, which therefore 

 becomes the type. The French Entomologists selected the 

 green Geometra papilionaria, Linn., as the type of Geometra ; 

 but three generic names had already been assigned to this 

 species : Terpne and Holothalassis of Hiibner, and HipparchuS 

 of Leach, the first of which will stand. 



THE CANARY-SHOULDERED THORN. GEOMETRA ALNIARIA. 



Geometra alniaria, Linnaeus, Syst. Nat. (ed. x.) i. p. 519, 



no. 131 (1758); id. Faun. Suec. p. 32, no. 1230 (1761); 



nee Den. 6 Schiff. 

 Geometra canaria, Hiibner, Beitr. Schmett. ii. (4), p. 99, pi. 4, fig. 



Y (i. 2) (1790); Esper, Schmett. v. p. 100, Taf. 19, figs. 2, 3 



(1795 ? ); Stephens, 111. Brit Ent. Haust. iii. p. 165 (1831). 

 Geometra tiliaria^ Borkhausen, Eur. Schmett. v. p. 87 (1794); 



Hiibner, Eur. Schmett. v. fig. 23 (1797?); Stephens, 111. 



Brit. Ent. Haust. iii. p. 164 (1831). 

 Ennomos tiliaria } Treitschke, Schmett. Eur. vi. (2), p. 295 



(1827); Buckler, Larvae of Brit. Lepid. vii. p. 4, pi. 108, 



figs. 4, 4 a (1897). 

 Eugonia alniaria, Kirby, Eur. Butterflies and Moths, p. 299 



(1881). 



This species is found throughout Temperate Europe. 

 16 p 



