Rev. A. Matthews on new CorylophiJje. 1 15 



A. vitreus differs from all the other species in its perfectly 

 ovate form, brightly polished surface, and in colour and 

 sculpture. 



Found in China by Mr. Bowriug. 



Aphanocephalus dissimilisj sp. nov. 



Long. 1-10 mm. Subovatus, validissime convexus, nitidus, profunda 

 punetatus, seneo-piceus ; capite prominenti, magno, lato, indis- 

 tincte punctato ; pronoto sat brevi, transverso, antice excavato, 

 punctis umbilicatis sat confertim impresso, lateribus rotundatis et 

 marginatis, angulis posterioribus sat obtusis ; elytris capite atque 

 pronoto parum latioribus, duplo lougioribus, ad media latissimis, 

 profuiidissime punctatis, lateribus late marginatis, apice valde 

 obtuso ; pedibus longis, gracilibus, Lnete flavis ; antennis longis, 

 flavescentibus. 



Differs from all the other species in the greater prominence 

 of its head and in the size, form, and sculpture of its body. 



Many specimens of this insect were found in China by 

 Mr. Bowring. 



Aphanocephalus WoUastoni^ l^J^'j was also found in China 

 by Mr. Bowring. 



The species of this genus, which appear to be abundant 

 in the countries of the extreme east of Asia, differ so widely 

 from the true Corylophidas that they evidently belong to an 

 entirely distinct family. Tn superficial appearance they bear 

 some resemblance to the Corylophidse ; but, except in the 

 large size of the second joint of their palpi, they differ from 

 them in every anatomical character. 



Their antennse are formed on an entirely different plan, 

 and have an apparently solid club, and when at rest or with- 

 drawn for concealment are not folded back upon themselves, as 

 in all the genera of Corylophidse, but are extended in a straight 

 line underneath the prothorax. 



Instead of the unilobed maxilla of the Corylophida3, Aphano- 

 cephalus exhibits a maxilla with three distinct lobes, like the 

 Trichopterygidse, although the outer lobe is not a true lobe, 

 but an integral prolongation of the stipes. Again, in the 

 enormous size of the mesosternal epimera Aphanocephalus 

 resembles the Trichopterygidfe ; but in the shape and posi- 

 tion of the coxal cavities it is equally unlike that family or 

 the Corylophidse. The tarsi of Aphanocephalus are merely 

 three-jointed, without any trace of a short penultimate joint, 

 and its wings are narrow and elongate, and strengthened 

 throughout with strong nervures, unlike the broad, rounded, 

 and almost nerveless wings of the Corylophidse. 



8* 



