98 Veterinary Medicine. 



oval ; antennae supported in sinus behind a prominent angular 

 tubercle, and formed of 5 segments, the first segments in the male 

 being larger than the others, and the third bearing an appendix 

 which is absent in Goniocotes. Behind this is a prominent tem- 

 poral angle. Eight species are described as infesting the pigeon 

 (i), hen (i), pheasant (2), turkey (i), Guinea-fowl (i) and 

 pea-fowl (2). 



Genus Goniocotes. Body flat, broad : head has two angles 

 on each side, an anterior (temporal) bearing two hairs, and a 

 po.sterior (occipital), the latter bearing a short spine. Five species 

 are described, in chickens (2), pigeons (i), pheasant (i), pea-fowl 

 and Guinea-fowl (i). 



Genus Decophorus. Body flat, broad ; forepart of head 

 (clypeus) separated from the hinder part by a suture ; anterior 

 angle of the sinus attaching the antennae, has a movable tuber- 

 cle ; antennae in 5 segments, the same in both sexes. Two 

 species are described, in duck and goose, respectively, the one 

 probably a variety. 



Genus Trinoton. Head very much rounded in front, and 

 laterally at the temples, a wide orbital cavity and eye in two lobes, 

 the antennae short and hidden ; thorax in three segments ; tarsi 

 bear two claws. Four species are described in duck ( i ) , goose 

 (2), and swan (i). 



Genus Colpocephalum. (Colpos bay, pocket). Head broader 

 than long ; resembles trinoton, but the eyes are rarely bilobed, 

 and antennae are longer and more evident. Tarsi bear two claws 

 each. The long tailed Colpocephalus infests pigeons. 



Genus Menopon. Head broadens backward to the temporal 

 region ; orbital sinus varies in size and is occupied in whole or in 

 part by the eye ; the short antennae may be folded back in the 

 orbital cavity, often median spots on sternum. Eight species 

 have been described in pigeon (i), chicken (2), pheasant (2), 

 turkey (i), pea-fowl (i). Guinea-fowl (i), duck (i), and 

 Guineapig (i). 



Symptoms of Lice. The itching, rubbing, scratching and 

 biting vary with the kind of parasite and the numbers present. 

 The hsemotopinus or bloodsuckers are naturally the most irritat- 

 ing, while the mallophaga or bird lice which merely bite through 

 the epidermis with their dentated mandibles and suck the exuding 



