28 MONOGRAPHIA 



lateral margin sinuated before the eyes; antennae about 

 half the length of the head, sub-clavate, last joint small and 

 conical ; eyes flat and obscure ; thorax short, transverse, 

 sides rotundate, base concave truncate, anterior notched; 

 abdomen large, oblong, oval, inflated, grayish yellow, cha- 

 greened, last segment very small ; legs light, testaceous, 

 anterior pair the thickest; femur robust; tibia abruptly 

 clavate, terminating anteriorly with two teeth and a fleshy 

 pulvillus ; tarsus slender and conical ; ungues long, slender 

 and curved. Length . 



This species I have obtained only once, though I have 

 examined several hares at different seasons. It nevertheless 

 may be owing to the Suctorious species of this order, leaving 

 the body soon after death, while the Biting or Mallophagus 

 division, whose food consists of the delicate fibres of feathers 

 and hairs, or particles of epidermis, will remain many days 

 or even weeks, the animal fluids or warmth of the body not 

 being essential to their existence. 



a. Head short and broad, about the length of the thorax. 



5. H^MATOPINUS PILIFEROUS. (Louse of the Dog.) 



Plate XXV. Fig. 4. 



Testaceous; abdomen cadaverous, thickly covered with 

 pale fuscous hairs. 



Pediculus pilifcrous. Burmeister Gen. Insect. Ord. Rhyn. sp. 13. Pedi- 

 culus canis-familiaris, Mull, prodr. 2182? Fabr. Faun. Groanl. p. 215, 

 no. 183 ?. 



Head and thorax testaceous, the former short, broad, and 

 obtusely hexangular ; anterior part slightly lobate,with a fur 

 row down each side, about half way above the antennae, and 

 two small foveolse in the centre ; labium produced ; haustel- 

 lum broad; occiput acuminate; eyes very small, black and 



