ANOPLURORUM BRITANNIJE. 31 



obtusely angular ; abdomen very large, oval, apparently 

 inflated, chagreened and hairy ; cadaverous white ; legs pale 

 ochraceous, short and thick ; tarsus small ; ungues chestnut, 

 very robust and obtuse. Length | to . 



The first specimen of this insect which came under my 

 notice was in the collection of the Rev. L. Jenyns, since 

 which I have detected several upon Rabbits. This species 

 varies in colour, but this will depend in a great measure 

 upon whether the insect has just gorged itself with fresh 

 blood, when the abdomen will have a much redder hue. 

 In its motions it is very sluggish, and resembled, from the 

 peculiar inflated and cushion like appearance of its 

 abdomen, the females of Orgyia, antiqua and gonostigma; 

 hence I have named it Ventricosus. 



/3. Head elongate, narrow, longer than the thorax. 



8. HJEMATOPINUS VITULI. (Louse of the Calf.) 



Plate XXV. Fig. 3. 



Chestnut; head sub-lyrate; abdomen long, and sub-cylin- 

 drical, ashy white ; legs very thick. . 



Hfematopinus Vituli, Steph. Cat. pt. ii. p. 329. Pediculus Vituli, Linn. 

 Syst. Nat. ii. 1018. Faun. Suec. 1947. Fabr. Syst. Ent. 805. 7. 

 Syst. Inst. ii. 478. 8. Berk. Synop. i. p. 170. Stew. Elem. ii. p. 279. 

 Turt. iii. p. 696. Pediculus tenuirostris, Burmeister Gen. Insect. 

 Order, Rhyn. sp. 17. 



Chestnut and shining ; head sub-lyrate, with a broad lon- 

 gitudinal depression down the centre, and a depressed line 

 on each side before the eyes ; occiput acuminate ; eyes flat, 

 pale, fuscus ; antennae about half the length of the head, 

 cylindrical, the first and second joints the largest, placed in 

 a slight sinus before the eyes ; thorax cylindrical, shorter 

 than the head, channelled down the centre, the segments 



