164 ME. E. m'lachlan on the neueopteba of 



If microcephala could be maintained as distinct, it is probable 

 that the whole (oi* nearly so) of the Madeiran and Canarian 

 examples should be referred thereto. In twelve examples before 

 me (five from Madeira, seven from the Canaries) the whole of these 

 present the slight darkening of the basal nerv ales indicated above. 

 In all of them, excepting two from Madeira and one from Teneriffe, 

 the dividing nervule of the third cubital cellule is interstitiate 

 with the nervule above it ; in only two of them — from Madeira 

 and Teneriffe respectively — are the blackish lines on the sides of 

 the face absent, in each case correlated with the normal third 

 cubital cellule of vulgaris ; in one — from Madeira — the lines on 

 the face are present, and the third cubital cellule is normal. 

 These conditions occurred together at the same place and under 

 the same circumstances, indiscriminately. I think this is suffi- 

 cient to prove that microcephala has no specific existence : the 

 form thus termed appears to be decidedly more frequent in the 

 south. 



In Northern and Central Europe the examples found in winter 

 or early spring are usually more or less suffused or spotted with 

 reddish : this condition does not appear to exist in the islands, 

 and is acquired during hibernation. 



Brulle's types of ^. alhus and H.perla both belong here ; of the 

 latter, wings only exist. 



Tour examples taken by Eaton at Mazagan in Marocco, on the 

 7th Januaiy, are typical vulgaris. 



This insect probably occurs in all the Atlantic islands. I have 

 it from St. Helena. But the eggs, larvae, or jDupse are exceedingly 

 likely to be introduced with plants ; hence it is possible it may not 

 be strictly endemic. 



ChRTSOPA rOETUNATA, U. Sp, 



Green, with a slight bluish tinge. 



AntenncB moderately slender, dusky testaceous, darker toward 

 the tips ; basal joint very bulbose, yellowish, with an irregular 

 blackish-brown longitudinal line above, and (sometimes) a blackish- 

 brown dot at its apex internally. Face with a biarcuate blackish- 

 brown transverse line below the antenna?, dilated on either side ; 

 clypeus broadly margined with blackish brown in its middle ; a 

 blackish-brown line on each cheek below the eyes, and a smaller 

 one on each side of the clypeus. Crown of head with a narrow 

 deeply biarcuate line above the antennae, outlining the deep cavi- 

 ties in which the basal joints are inserted, forming an angle 



