XTLONOMUS. 77 



narrower ; annellus smooth and subobsolete ; flagellar joints cylin- 

 drical, gradually decreasing in length and apically hardly nodulose. 

 Thorax cylindrical, much longer than high ; notauli distinct and 

 elongate ; epomiae and epicnemia distinct ; metanotal areae and 

 apophyses well defined ; spiracles oblong or linear. Scutellum 

 more or less convex, triangular and apically obtuse. Abdomen 

 subsessile, somewhat deplanate discally, finely punctate and rarely 

 shining ; of d" elongate, sublinear or a little dilated towards the 

 apex, narrower and usually twice as long as the thorax ; of $ 

 shorter and as broad as the thorax, oblong or oblong-ovate. 

 Basal segment longer than broad, scabriculous, usually with 

 distinct longitudinal carinse, parallel-sided or (in $ ) apically 

 dilated, sometimes laterally impressed, with the spiracles slightly 

 behind the centre ; eighth segment exserted in $ . Terebra 

 emitted before the apex, not or only slightly longer than the 

 abdomen. Legs normal or subelongate ; anterior tibiae, especially 

 in $ , incrassate and constricted at the base ; tarsal claws small 

 and simple. Wings somewhat narrow ; areolet entirely wanting ; 

 lower wings with the radial abscissa shorter than the recurrent 

 nervure. 



Range. Europe, Malay Archipelago, Japan, North America. 



Cyunoxorides and Spiloxoi'ides, Cam. (Jour. Str. Br. Boy. As. 

 Soc. 1903, pp. 141 et 143) may be useful here as subgenera. 



This genus differs from Xorides in the rugulose petiole and 

 broader basal segment, as well as in its internally parallel eyes, 

 which in the latter are subconvergent towards the apex ; its 

 relationship with Banclius and Arotes is remarked upon by Graven- 

 horst. The species are few in number in Europe, though more 

 numerous in America/and Smith has described several from the 

 Malay Archipelago and Japan ; they are well known to prey 

 beneficially on larvae of Longicorn Coleoptera, which are often so 

 destructive to forest and other trees. 



Table of Species. 



1 (4) Body mainly, and antennae apically, 



black. 



2 (3) Thorax black ; irons punctate ; ner- 



vellus central tartarus, sp. n., p. 78. 



3 (2) Thorax apically pale ; irons glabrous : 



nervellus below centre abaddon, sp. n., p. 79. 



4 (1) Body strongly metallic and irides- 



cent ; antennae often apically white. 



5 (8) Antennae broadly white at or before 



apices ; body not black. 



6 (7) Second recurrent nervure not con- 



tinuous with submarginal '. . . elizabethce, Bing., p. 80. 



7 (6) Second recurrent nervure continuous 



with submarginal anmtlicornis, Cam., p. 80. 



8 (5) Antennae narrowly white centrally ; 



body brilliant blue c&rulescens, sp. n., p. 81. 



