NEW MALLOPHAGA. 47 1 



glands of the Mallophaga, with the characteristic "oesoph- 

 ageal bone " and glands of the Psocidae. The comparison 

 of these structures in the two groups reveals an agree- 

 ment in position and character so nearly identical as to 

 preclude any supposition of independent origin. Also, 

 there is to be noted the presence, in certain genera of the 

 Mallophaga, of a pair of " forks," very much reduced 

 in size, and not yet well understood. These forks seem 

 very like the familiar and characteristic Psocid forks, so 

 far apparently found among no other insects. 



It is not intended to discuss here, at all, the probable 

 relationship of the Psocidae and Mallophaga, simply to 

 point out the peculiar and interesting similarity of mouth 

 structures, as so far brought out in the study of the 

 groups. It is of interest to note in this connection the 

 rather similar food habits of the two groups, the Psocidae 

 feeding on dry, dead organic matter, such as wood and 

 paper, dried insects, and dried bird and mammal skins; 

 and the Mallophaga feeding on the dry, dead dermal 

 scales, hairs, and feathers of mammals and birds. I have 

 found Atroftos not infrequently in the nests of birds. 



DESCRIPTIONS OF NEW SPECIES. 



DOCOPHORUS. 



Docophorus taurocephalus n. sp. (Plate lxv, fig. i.) 



Two males and a female from an American Rough- 

 legged Hawk, Archibitteo lago-pas sancti-johannis (Law- 

 rence, Kansas) . A member of the group dilatatoclypeati, 

 found on eagles and hawks and characterized by the 

 more or less prominent, uncolored frontal expansion of 

 the clypeus. The new form resembles Nitzsch's gono- 

 rhynchus (Giebel, Insecta Epizoa, p. 70), from As/ur 



