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XXVII. Note on Boreus hyemalis and B. Westwoodii. 

 By Robert McLachlan, F.L.S., Sec. Ent. 

 Soc. 



[Bead 6th December, 1869.] 



In tlie "Entomologist's Monthly Magazine/' Vol. iii. 

 p. 132 (November, 1866) , Dr. Hagen in his " Synopsis 

 of the Genus Boreus " first made known to Entomologists 

 the existence in Europe of two species of this singular, 

 and still somewhat rare, genus of Neuroptera. His short . 

 descriptions are as follows : — 



'' B. Memalis, Linne." 



" Bronze-brown ; beak, antennge, legs, wings, appen- 

 " dices of the male, and borer of the female, clear brown, 

 " the antennge dark brown at the apex; wings of the 

 " male long, acute, curved, and pectinated internally; 

 " first abdominal segment of the male with an erect 

 " transverse fold in the middle above, long, rather longer 

 " than broad ; second segment with a similar fold, but 

 " smaller, almost in the form of a tubercle ; lamina below 

 " the appendices, long, triangular elliptic at the apex. 



" Habitat : Germany, Hanover, East Prussia. 



" B. Westwoodii, Hagen." 



" Bronzy-green ; beak, antennae, legs, wings, appen- 

 " dices of the male, and borer of the female, yellow; 

 " antennae and legs dark brown at the apex; first ab- 

 " dominal segment of the male with a fold as in B. hie- 

 " mails ; second segment with a quadrate fold, smaller ; 

 " lamina broader, slightly grooved at the apex. 



*^ Habitat : Germany, Finland, England. 



" This is the species figured by Westwood in the 

 " frontispiece to his ^Introduction,' and probably also 

 *' that described by Curtis and Stephens." 



When working up the materials for my Monograph of 

 the British Neuroptera-Planipennia, published in the 

 Transactions of this Society, I felt compelled to ignore 

 the existence of B. Westiuoodii in Britain (Tr. Ent. Soc. 

 1868, p. 220), because I had never seen a male possess- 

 ing the characters pointed out by Dr. Hagen, and the 



TRANS. ENT. SOC. 1869. — PART V. (DECEMBER.) 



