214 MONOGRAPHIA 



Menopon eurysternum- Burmeister Handbuch ii. pt. ii. p. 439. Pedicu- 

 lus Pica. Linn. Syst. Nat. ii. 1018. 16. Fabr. Syst. Ent. 807. 16. 

 Syst. Inst. ii. 479. 18. Louse of the Magpie. Albin. Aran. 76. tab. 45. 

 Redi. Expe. tab. 5. 



Head testaceous-yellow, broad ; clypeus rotundate, with 

 two dark spots in front, and a transverse fascia at the base, 

 orbital sinus deep, with a large black patch before each eye, 

 vertex concave, temporal margin prominent, with several 

 long hairs ; antennae fulvous, the first joint short and thick, 

 second very small, third semicircular, fourth large and sub- 

 globular ; prothorax small, much narrower than the head, 

 rotundate; mesothorax very small ; metathorax transverse, 

 base slightly produced in the centre ; abdomen large, broad, 

 and ovate, with pitchy bands, sutures pale, lateral margin 

 with a deep impressed line from the first to the sixth seg- 

 ment ; legs thick, dull chestnut, with a dusky spot at the 

 apex of the femora and tibiae; anterior femora large and in- 

 volute, second and third variable in shape. Length. 1. 



Infests the Magpie (Corvus pica). I have ventured to 

 remove this species from the sub-genus Menopon, from an 

 impression that the temporal sinus is more characteristic 

 of the present sub-genus. 



9. COLPOCEPHALUM iMPORTUNUM. (Louse of the Heron.) 



Plate XVII I. Fig. 1. 



Pitchy, shining, and pubescent; head obtusely pyramidal, 

 with a black, orbital patch on each side ; abdomen clavi- 

 form. 



Colpocephalum importunum. Nitzsch. MSS. 

 Head deep chestnut, large, transverse, obtusely pyrami- 

 dal; clypeus sinuated and ciliated with hairs of different 

 lengths, lateral margin with a large black patch before the 

 eyes, orbital sinus shallow, base very wide, truncate ; an- 



