ADELOQNATill. 2U 



have distinct mandibular appendages. Their obvious affinities 

 would make it absurd to place these insects in a different family 

 or even subfamily, and we can only recognise that in this 

 particular case the scar has, at most, no more than a generic 

 value. 



The subfamilies mentioned in the key that do not come within 

 our limits are placed in square brackets. The Leptopix^ are 

 mainly Soutli American, the remainder occurring mostly in 

 Australia; the Mickocerin.^ are purely African; while' the 

 Braciiv'cerin'.^ are predominatingly African, though well repre- 

 sented in the Mediterranean subreofion. 



Keif to the SuhfamiUes. 



1 (10) Antenuoj elbowed; tarsi spongy 



beneath, the third joint bilo- 

 bate. 



2 (9) JNJaodibles pincer-like and obtuse, 



with a scar that forms a support 

 for a deciduous appendage 

 (fi-s. 4, o). 



3 (6) Scrobes of the rostrum forming a 



sublinear furrow and curving 

 downwards in front of the eye, 

 generallv lateral in position 

 (fig. 1, d). 



4 (5) Protborax without a lobe on the 



anterior niargiu below the eye. Brachydf.iun.i.;, p. ."iO. 



5 (4) Protborax with ocular lobes .... [Leptopi>;.t;1. 



6 (3) Scrobes never at the same time 



sublinear and curving down- 

 wards, directed towards the eye 

 and generally subdorsal in 

 position, often much dilated 

 and verv shallow behind (fig. 

 l.h). 



7 (8) Protborax without an ocuhir lobe 



or vibrissie ou the anterior 



margin ......._ OTiouuHYxcuiNiE, p. 1^04. 



8 (7) Protborax with either an ocular 



lobe or vibrisste or both Eukmkin.^?. 



9 (2) Mandibles comparatively slender 



and pointed, without a de- 

 ciduous appendage or a scar . . Tanyurhyxchix^-:. 



10 (1) Auteunne not elbowed; the tarsi 



not spongy beneath, but setose, 

 the third joint not bilobate. 



11 (12) Tibiaj transversely truncate at the 



apex for the reception of the 



tai'si [MicnoCKRiN.T^;"!. 



12 (11) Tibiaj obliquely trimcate at the 



apex [Brachyckrin.?:". 



