1894.] MICROSCOPICAL JOURNAL. 345 



bbb Antennae three-jointed. Haemaiopinoides 



*Not yet recorded for North America. 



MALLOPHAGA. 



MALLOPHAGID^. 



PHILOPTERID^. 



A Antennae of five-joints. 



a Antennae similar in two se^es. 



b Forehead truncate, emarginate, more often rounded, not cren 



ulate, last segment round or notched. 



c Large broad trabeculae large, free. Docophorus 



cc Trabeculae small, fixed. Nirmus 



bb Forehead profoundly crenulate. Akidoproctus 



aa Antennae differing in two sexes : 



b Wide, body rounded, or oval elongate. Temporal lobe^ 

 usually angular, last segment of male rounded or in some 

 cases with two points, 

 c First joint antennae male large, sometimes with an appen- 



dage, thirdjoint always with an appendage. Goniodes 

 cc First joint large but without appendage. Last segment 

 of abdomen always rounded. Goniocotes 



bb Narrow, body elongate. Sides almost parallel. Last segment 

 male notched, 

 c Third joint male antennae without appendage. Temporal 

 band forming a ridge, behind eye ; a second abdom- 

 inal band parallel to border. Ornilhobius 

 cc Third joint male antennae with appendage, no ridge to 

 temporal band or second abdominal band. 

 d Antennae and feet well developed. A semicircu- 

 lar fossette in front of mandibles. Lipeurus 

 Antennae and feet short, in place of the fossette a 

 rainure or depression extending to anterior bor- 

 der. Oncophorus 

 AA Antennae of three-joints. Trichodectes 



LIOTHElDiE. 



A Tarsus with two claws, (infesting birds), 



a Head with a deep orbital sinus. 



b Head rounded, without lateral swelling, the antennae passing 

 the margin. ColpocepJtaluvi 



bb Head with strong lateral swellings. 



c Antennae passing margin of head. Temporal lobes pro- 



tuberant with right angle. Eye very large and simple. 



Boopia* 

 cc Antennae hidden. Temporal lobes rounded or slightly 



angular. Eye parted by a spot. 



