72 SUB-FAMILY LOPHYEINA. 



more than one median cellule, and may even have 

 none. The tarsi too bear no patellae, and both wings 

 may have appendicular cellules, while as often as not, 

 the accessory nervure in the hind wings may be absent. 

 Pterygophorus also belongs to a distinct sub-family, 

 which differs both from the Lophyrina and Perreyina 

 in the lanceolate cellule being obsolete. The accessory 

 nervure in the hind wings is also absent ; the latter 

 have only one middle cellule, and the anterior are 

 appendiculated. 



Whether Gladomacra and Polyclonus (both from the 

 Australian region) should form a separate sub-family, 

 or only a sub- tribe, of the Lophyrina, is a point which 

 I cannot determine in the meantime ; but both differ 

 from the Lophyrina proper in the posterior wings being 

 appendiculated, and in their having no middle cellules, 

 the transverse and recurrent nervures being absent, 

 such being also the case with the accessory. The 

 antennae are long, straight, the rami being also per- 

 fectly straight and single, not curled as in Lophyrus 

 and Monoctenus, while the legs have no patella ; the two 

 genera I have named cannot be placed in the Pterygo- 

 phorina, which differ from them in the front wings being 

 appendiculated, in having no lanceolate cellule, the 

 patellae distinct, the antennae in $ short and curved, &c. 



Lophyrus is confined mainly to the Palaearctic and 

 Nearctic regions, there being twenty-one European 

 species, and fifteen North American ; a species is also 

 known from Cuba and another from India. There are 

 only two genera : 



Lophyrus, with an open lanceolate cellule with an 

 oblique cross nervure, the calcaria membranous at the 

 apex, and the antennae with a double row of pectina- 

 tions in the $ ; and 



Monoctenus, Dbm., with the lanceolate cellule con- 

 stricted in the middle, the calcaria not membranous, 

 and the antennae in the <J , with but a single row of 

 pectinations. It differs from Lophyrus also in having 

 the fore lobes of the metanotum well developed. 



