216 Journal New York En' iomological Socieiy. [Voi. x. 



brood, the new pupa shell with its great clypeal spur seems scarcely to 

 get thoroughly hardened before the imago is ready to burst forth. 



For an examination of tubercles and the specially developed i)ro- 

 tective plates, Achatodes zcif. furnishes a good delineation. A record 

 of the species from the middle West, stating the pupa was formed 

 within the burrows, when boring Sainhuciis, is quite the reverse of 

 what occurs in this locality where the pypa is always formed in the 

 ground. 



After passing the representative borers there are still others that bur- 

 row or mine in their various food substances. Some, like Scof>closoma, 

 only do so in their earliest stages. 



Whatever attraction boring larv;e may have for the collector or 

 student, one point worth remembering is the prevalent localization 

 that necessarily exists with many of the species, so that unfamiliar 

 territory will cjuite often disclose an unexpected guest, perchance 

 some coveted rarity. 



DESCRIPTIONS OF NEW MALLOPHAGA " 

 FROM NEBRASKA. 



By M. a. Carriker, Jr. 



(Plates XX-XXII.) 



For a number of years the writer has been greatly interested in the 

 study of ornithology, and having in the meantime begun the study of 

 entomology, he naturally became interested in the insect ])arasites of 

 birds, namely, the group known as Malloi)haga. In addition to the 

 writer's own collection he has had access to that of the University of 

 Nebraska and also to the private collections of Professor Lawrence 

 Bruner and J. C. Crawford, Jr. I wish to express my thanks to the 

 owners of these collections for their use and especially to Profes,sor 

 Vernon L. Kellogg, of Leland Stanford University, Cal., for his kind- 

 ness in looking over the manuscript and drawings before publication, 

 and for his helpful suggestions, most of which have been followed out. 

 The types and co-types from which these forms were described are 

 located as follows : In the University of Nebraska collection are types 

 of Ninnus trimarginis, Nirimis biocellatiis var. iUi:;ropiLtits, Nirmiis 

 u'l'^i/sti/roiis, Colpocephaltiin qiiaiirimacitlati/s, Autzschia piilicaris var. 



