150 Mr. D. Sharp on 



This is very distinct by the strongly dilated terminal 

 joint of the palpi which is broadly securiform, both on the 

 maxilla and labium. The hind tarsi are long and slender, 

 with remarkably long basal joint. The eyes are rather 

 more prominent and have a greater extension on the 

 under-surface of the head than they have in C. rusticus. 

 The sculpture of the gular area is transversely rugose, the 

 impressed punctures not numerous. This insect was 

 kindly sent home by Herr Reitter with the locality " Syria." 

 In his description he mentions, Haifa, Akbes. There is also 

 a male example from Akbes in the Oberthur Collection. 



N.B. — The British Museum Collection contains a 

 specimen of this genus from the collection of Dejean. It 

 is in very bad condition, and I do not know whether it is 

 G. syriams or another species. In Dejean's collection it 

 was labelled " rusticus, Gall, mer." The locality from 

 which this specimen really came is, I consider, extremely 

 doubtful. 



Criocephalus, Mulsant. 



Oriocephalus (Dej.), Muls. Longicornes, ed. i, p. 63. 



I have already mentioned the characters that distinguish 

 this genus from the allied forms (p. 147). 



The species present a great uniformity of appearance 

 and as they are fairly numerous it is not easy to distin- 

 guish them. Particular attention should be given to the 

 form of the thorax, the length of the small setse between 

 the facets of the eyes, and the form of the third joint of 

 the tarsus. 



The genus has been subdivided by the eyes being 

 " hairy " or " bare." But this is incorrect ; all the species 

 have some setae between the ocular facets, and it is only a 

 question of longer or shorter. The same remark applies 

 to the lobing of the third joint of the tarsus, which differs 

 somewhat from species to species. The labrum apparently 

 offers a better character, but unfortunately it is not easy 

 to see without opening the mandibles and this it is some- 

 what difficult to do, as they are closed by very powerful 

 muscles, which cannot be ruptured after the insects are 

 dead and dried. 



Group A. 



Labrum without pencil of hairs in fovea on the middle 

 of its area. Eyes with long hairs between the facets. 



