ANOPLURORUM BRITANNIA. 175 



the male, obtusely recurved; prothorax sub-conical, narrower 

 than the head, with the lateral margins black ; metathorax 

 quadrate, lateral margins concave and black, bifurcate at 

 the shoulder ; abdomen elongate, acuminate, the first and 

 second segment with a simple black lateral margin, the 

 three following with a black sigmoidal, the sixth and se- 

 venth with a simple lateral fascia, attenuated towards the 

 extremity, the last two quite plain ; legs pale yellow-white, 

 long, and rather slender, anterior femora large, those of the 

 second pair with a black spot near the apex; tarsi chestnut. 

 Length 1 . 



The first example of this species I had the opportunity of 

 examining, I received from Mr. Thompson of Belfast, (whose 

 exertions to illustrate this monograph deserves my best thanks) 

 which was a female, since then another single specimen of the 

 male occurred upon a Heron (Ardea cinerea), I was search- 

 ing, and from these two being the only individuals within 

 my knowledge, I suspect it is rather scarce. I have quoted 

 Scopoli's Synonym, although he gives it as parasitical on 

 the Stork, upon which bird it may probably be also found, 

 as his description cannot apply to the usual parasite of 

 Ciconia Alba, the L. versicolor, page 171, plate 15, fig. 7, 

 he says, "abdomen albidum ovatum" but takes no notice of 

 the black margin, from which I should infer that his de- 

 scription was taken from an immature specimen, in which 

 the margin would not be so visible, or perhaps wholly ab- 

 sent, which frequently occurs in young specimens. 



11. LIPEURUS TEMPORALIS. (Louse of the Merganser.) 



Plate XIV. Fig. 7. 



Pale ochraceous ; head and prothorax bright ferruginous; 

 abdomen elongate, clavate, lateral margin liver-brown ; 

 sutural rings pale. 



