Rev. T. Blackburn on Hawaiian Neuroptera. 417 



colouring inter se ; but it is quite possible I may be mistaken 

 in this opinion. 



Agrion ? Jcoelense, sp. uov. 



This insect appears to me nearer A. hawaiiense than any 

 other known to me. Pterostigina surmounting rather more 

 than one cellule. Quadrilateral with its superior edge about 

 half the length of the lower in both pairs of wings. About 

 fifteen postcubital nervules in anterior wings, about thirteen 

 in posterior. Three cellules (rather more in the anterior wing 

 on one side of my specimen) between the quadrilateral and 

 nodus. 



Colour entirely steely black, save the labium, which is dull 

 testaceous. Here and there the colour shades off into steely 

 blue. 



S . Tenth segment gently and triangularly excised. Su- 

 perior appendages strongly compressed, forcipate ; viewed 

 from the side each of them has the appearance of a parallelo- 

 gram, of which the upper apical extremity is produced into a 

 long and the lower into a short process ; in reality, however, 

 these processes are turned inwards before their extremity and 

 terminate in spines. The lower appendages are not much 

 shorter than the upper, and are strongly dilated at the base, 

 but pointed at the apex, the points being directed upwards 

 and inwards. 



$ . My specimen is so badly mutilated as to be insufficient 

 for description. The upper appendages of the genitalia are 

 wanting ; the remaining parts of them, however, are entirely 

 black. 



Length of hind body, J" 35 millim. ; length of posterior 

 wing 22 millim. ; expanse 50 millim. 



Two specimens occurred on Lanai, flying in a ravine near 

 a place called Koele. 



Agrion '^. 'pacijicmn^ McLachl. 



I observe that in Mr. McLachlan's paper the localities where 

 this species was taken are said to be " Lanai and Oahu." 

 This is, unfortunately, a mistake, very likely a slip of the 

 pen on my part. The islands on which I met with the species 

 were Maui and Lanai. 



PLANIPENNIA. 

 Hemerobiidae. 



I see Mr. McLachlan (for want of sufficient evidence) justly 

 hesitates to consider the Megalomus I sent him endemic. I 



