THE INSECTS OF NEW JERSEY. 47 



Family LIOTHEID^E. 



The antennae are 4-jointed, with an enlarged club at tip, concealed; 

 tarsi with two claws, and all the species infesting birds. 



PHYSOSTOMUM Nitzsch. 



P. lineatum Osb. Infests the ruby-throated humming bird. 

 P. angulatum Kellogg. On the king bird or "bee Martin." 



P. frenatum Nitzsch. Taken in New Jersey from the golden-crowned 

 Kinglet. 



TRINOTON Nitzsch. 



T. luridum Nitzsch. Another of the duck parasites. 

 T. lituratum Nitzsch. Found on wild ducks and geese. 



NITZSCHIA Denny. 

 N. pulicaris Nitzsch. Louse of the chimney swallow. 



COLPOCEPHALUM Nitzsch. 



C. lari Pack. Found on the great black-backed gull. 



C. fuscipes Piaget. Also a parasite of gulls. 



C. ochraceum Nitzsch. Found on the pectoral sandpiper. 



C. flavescens Nitzsch. Louse of the swallow-tailed kite. 



C. subpachygaster Piaget. Infests the great horned owl. 



C. pustulosum Piaget. Parasite on the belted king-fisher. 



MENOPON Nitzsch. 



M. tridens Nitzsch. Yet another parasite of the mud hen; probably in- 

 festing also other allied birds. 



M. consanguineum Piaget. A third species found on pelicans, and prob- 

 ably not a good Jerseyite. 



M. crocatum Nitzsch. Taken on American woodcock and ring-tailed Mar- 

 lin. 



M. pallescens Nitzsch. Yet another parasite of the Bob White. 



M. pallidum Nitzsch. Also found on the domestic fowl. 



M. biseriatim Piaget. Occurs with the preceding. 



M. interruptus Osb. Parasitic on the common crow. 



M. expansum Osb. Infests the bobolink. 



M. crassipes Piaget. Found on the Baltimore Oriole. 



M. dissimile Kellogg. Found on the purple Martin. 



M. rusticum Giebel. A companion of the preceding on the same host. 



