Nov., '07] ENTOMOLOGICAL NEWS. 377 



cattle tick is something which the writer's assistants hope to 

 investigate should they be able to secure further living speci- 

 mens. The observation is most interesting from the biological 

 standpoint. The parasite appears to be quite new, belonging 

 to the sub-family Encyrtinae of Ashmead's family Encyrtidae, 

 but does not fit well into either of the tribes founded by him. 

 It may be described as follows : 



IXODIPHAGUS gen. nov. 



Female. Mesoscutum entire, convex, parapsidal furrows 

 entirely absent. Mandibles broad, bidentate, with an inner 

 chisel-shaped tooth and a canine tooth. Maxillary palpi 

 4-jointed, joints 2 and 3 shorter than I and 2. Labial palpi 

 3- jointed short and very stout, joint 2 very short. Hypopygium 

 not prominent. Marginal vein punctiform ; post-marginal 

 short, shorter than stigmal which is triangular and descends 

 at a narrow angle into the wing disk. Body robust. Head 

 lenticular from dorsal aspect : eyes well separated ; ocelli at 

 angles of right-angled triangle, the distance of the middle 

 ocellus from each of the laterals about equal to that of a lateral 

 from the eye-margin; eyes faintly pubescent, Antennae some- 

 what pilose, slightly club-shaped ; scape slightly swollen ; 

 pedicel ob-conical, longer than joints i and 2 of the funicle 

 together; funicle joints subequal in length but gradually widen- 

 ing from T to 6; club with its 3 joints visibly separated, some- 

 what longer than last 3 funicle joints together, and with a 

 long lateral flattened area. Antennae inserted just below mid- 

 dle of face, their bases widely separated. Antennal scrobes 

 deep. Cheeks and lower face well rounded. Mesoscutum and 

 mesoscutellum subequal in length ; axillae nearly meeting at 

 tips. Legs normal. 



Ixodipliagus texanus n. sp. 



Female. Length 0.8 mm; expanse 1.5 mm; greatest width of foiv 

 wing 0.2. Body black, shining, somewhat pubescent. Antennae brown. 

 scape yellowish, especially near base; all tibia 1 and tarsi honey yellow; 

 front femora entirely black; middle and bind femora honey yellow at 

 either end. Head and thorax shining, coriaceous. Wings generally and 

 \cry faintly infuscated; wing veins light-brown, distinct. 



