34 MONOGRAPH I A 



10. HJEMATOPINUS Suis. (Louse of the Swine.) 



Plate XXV. Fig. 2. 



Dusky ferruginous ; abdomen grey or ashy- yellow; flat and 

 membranaceous, with a black horny excrescence surround- 

 ing each spiracula, which is white ; legs long, thick ; femur 

 banded ; tibia very abruptly clavate, dark at the apex. 



Hsematopinus Suis. Leach. Zool. Misc. iii. p. 65. pi. 146. Edin. Ency. 

 ix. 77. Ency. Brit. Supp. i. 24. Samoa. Ent. Comp. p. 143. Step. 

 Cat. pt. ii. p. 329. Pecliculua Suis. Linn. Syst. Nat. ii. p. 1017. 

 Panz. Faun. Ii. pi. 16. Stew. Elem. ii. p. 298. Wood, ii. p. 123. pi. 76. 

 Pediculus Urius. Nitzsch. Germ. Mag. iii. p. 305. Burmeister'sGen. 

 Insect. Ord. Rhyn. Spe. 19. 



Ferruginous ; head somewhat pyriform and narrow, with 

 an angular black line at the apex, and one on each side 

 before the eyes ; haustellum very prominent and conical (e) ; 

 eyes large, flat, ashy blue, seated about the centre of the 

 lateral margin ; antennae filiform, slender, half the length 

 of the head, pale ochraceous yellow ; the base of each joint 

 fuscus ; thorax transverse, much wider than the head, with 

 a strong elevated margin, anteriorly concave truncate, light 

 ochraceous and wrinkled, posterior angles acute, lateral 

 portion and base pitchy; abdomen large, flat, oval, and 

 membranaceous, bluish or yellowish ash colour, sometimes 

 nearly white, the segments well defined, with a Yew hairs 

 scattered over the surface, the second and five following 

 segments with a black horny excrescence on each side 

 surrounding the spiracula, which is white, penultimate 

 segment with two triangular black spots ; legs pale, ochra- 

 ceous, long and thick ; femur nearly cylindrical, with 

 several dark bands; tibia very abruptly clavate, with a 

 blackish extremity; tarsus long and cylindrical, with a 



