AC.EXITIDES. 39 



basallv black: hind legs darker fulvous, with coxai and tarsi 

 yellower; hind coxte broadly black internally at the base and 

 externally at the apex, their trochanters broadly black above 

 and tbe femora black above at the base. Wiiuj.^ clear hyaline ; 

 stigma iufuscate, nervures darker, and tegulae flavous. 



Length 11-12 millim. 



Assam : Khasi Hills {Eothneii). 



Tijpe in the Oxford Museum, labelled hrunnekornis by its 

 author. 



Tribe AC.ENITIDES. 



This tribe consists of several aberrant genera, of \\\\\c\i Aconihiis 

 and Colhjrla appear sufficiently closely related. Of the rest, 

 Coleoceiitras is intermediate between the Pimplix.i: and the 

 Ophionid genus Anomalon; Q^dematopsis might with more pro- 

 priety be placed in the Tryphonix.i;, near 21i;/inaris; and the 

 exclusively Indian Tanera was thought by its author to appertniu 

 to the LissoxoTiDES. If relegated to the Pimplix.i;, which would 

 seem their most natural position in our artificial classification, all 

 fall into the present tribe on account of their elongate hypo- 

 pygium, which entirely conceals the base of the terebra, and in 

 many cases extends to or even beyond the abdominal apex. The 

 first three genera are stout insects, with elongate and incrassate 

 hind legs, and short, snbclaviform antenna3 ; the last two are 

 much more slender, with elongate and filiform antennae, which 

 often exceed the body in length, and with the legs normal and 

 slender. As already remarked, it is exceedingly probable that 

 the distinction between this group and the last is less than has 

 hitherto been supposed ; and some of Cameron's species included 

 therein should, quite possibly, be placed in the present tribe, 

 since he himself was uncertain concerning their position. Xo 

 hosts of the Indian species have yet been noted. 



TahJe of Genera. 



1 (G) Hiud legs stout or elongate ; an- 



teniue about half length of body. 



2 (5) Areolet Avanting ; metathoracic 



spiracles elongate. 



3 (4) Head transverse; hind tibiie stout; 



hypopygium acuniiuiite A(".T3NITt:s, Latr., p. 40. 



4 (3) Head subeubical ; tibi;e uuriiiul ; 



hypopygium subtruncate Collyria, Schiod., p. 45. 



5 (2) Areolet triangular ; metathoracic [p. 47. 



spiracles oval Coleockntrus, Grav., 



6 (1) Hind legs uorniiil; antennae about 



as long as body. 



7 (14) Areolet entirely wanting. 



