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 sexes. 



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, thirdjointalwaj's 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. OniUJwbius 

 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 tossette a 

 rainure or depression extending to anterior bor- 

 der. Oncophorus 

 AA Antennae of three-joints. T)-ichodectes 



LIOTHEID^. 



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. ColpoeeplMlum 



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. 



