472 GNATS OR MOSQUITOES — CHAPTER XIII 



NoTK. — Must not be confused with C. indliiics, Meigen, whicli has 

 the proboscis and basal bajids on the abdomen yellow. To mark the 

 distinction, the name Melanorhinus was given in the first edition, but 

 in now, according to Macquart's name, a merely nominal status, this 

 hardly remains necessary. — G. M. G. 



Genus XV. DEINOKERIDES, Theobald 



(IMonog. II, p. 215). 



As no males have come to hand it is doubtful if this genus 

 should be included in the Culicma or the ^■Edomina. Its dis- 

 tinguishing character is the structure of the antennae, which 

 have the second joint of extraordinary length and clothed with 

 scales. The only gnats which have antennae at all similar are 

 the Megarhince and certain species of the genus Anopheles, but 

 in none of these is the second joint so disproportionately long as 

 in Deinokerides, and in these it is dilated, instead of tapering 

 uniformly. The remaining twelve joints are also much longer 

 than usual and are clothed with bristles nearly as stout as those 

 of the rather ill-developed verticils. 



Mr. Theobald defines his new genus as follows : — 



" Head clothed with curved thin scales on the vertex and with long 

 orked upright scales, which are timbriated at the apex as well as forked. 

 Thorax with flat curved spindle-shaped scales. Abdomen covered with 

 flat scales. Palpi of $ , three-jointed ; antennce ivitli the second joint 

 very long, as long as the three folloiving joints ; much longer than the 

 proboscis. Tarsal claws of $ , equal and simple." 



1. DEINOKERIDES CANCER, Theobald (Monog. II, p. 216). 



Thorax blackish, brown towards the scutellum, with scattered 

 bronzy-black scales. Abdomen blackish-brown, with deep umber- 

 brown scales ; venter paler. Legs brown, with bronj^y reflections ; 

 coxae pallid ; femora yellowish at the base and underneath ; 

 ungues of the female equal and simple. 



$ . — Head blackish-brown, witli gi-eyish flat curved scales, somewhat 

 creamy-coloured towards the front, with scattered brown forked upright 

 scales ; antennae bright brown, basal joint yellowish, base of the second 

 joint the same, fourteen-jointed, second joint very long ; palpi covered 

 with chocolate-brown scales ; clypeus bright chestnut-brown ; proboscis 

 blacldsh-brown, darkened and expanding towards the tip, paler at the 

 base. Pleurie chestnut-brown. Wings with clavate scales on II. Hal- 



