240 ^ THE CANADIAN ENTOMOLOGIST. 



tapers strongly and regularly to the posterior end and is beset 

 with numerous bristles. The whole body is a light straw colour. 



This is in Canada as elsewhere the most common species 

 affecting the Domestic Fowl. It can be readily recognized by its 

 Ijght yell(jw colour and extreme activity on the birds. It has been 

 recorded in America also from the pigeon and is said 'by some to 

 attack horses if such arc in close proximity to lousy birds. The 

 writer has never seen horses so attacked. 



Menopon biseriatum Piaget. 



This species is about .08 to .09 inches in length. The female 

 has the body elongate and loosely jointed, the head short and the 

 legs long. The abdomen tapers abruptly but slightly at the 

 posterior end, and the posterior margin of the last segment bears 

 a close series of fine hairs. The general body colour is yellowish 

 brown. The male is shorter and stouter than the female and 

 lacks the series of hairs on the posterior margin of the last segment. 

 This species occurs commonly and often abundantly in company 

 with M. pallidum It can readily be distinguished from the latter 

 by its larger size and less compact form. It has been recorded in 

 America also from the turkey and pigeon, and is said to attack the 

 pea fowl. 



The Variable Chicken Louse {Lipeunis variabilis N.). 



The length of this species is about .09 to .095 inches. The 

 body of the female is elongate and slender. The head is broadly 

 rounded in front and the antennae are slender with the first joint 

 short. The legs are long and. the abdomen tapers weakly from the 

 sixth segment. The colour is whitish, the margins of the body 

 and front margins of the legs being pitchy black. The abdominal 

 segments each bear a large squarish median brown patch. The 

 male is more slender than the female and the first joint of the 

 antenna is very large, and bears a peg-like appendage as does also 

 the third segment. 



This species is quite common and can usually be found on any 

 heavily infested flock. 



