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CONTENTS OF VOLUME XXIV. 



Pagb 



AcKERMAN, Arthur J., 



The Carpenter Bees of the United States of the Genus Xylocopa 196 

 Alexander, Charles P., 



New Limnophiline Crane-Flies from the United States and 



Canada 118 



Bird, Henry, 



Xanthoecia Buffaloensis Grt., its Larval Habit and Occurrence 



Within Our Fifty-Mile Faunal Zone 86 



Crampton, G. C, 



The Orders and Relationships of Apterygotan Insects 267 



Davis, Wm. T., 



Notes on Cicadas from the United States with Descriptions of 

 Several New Species 42 



Two New Cicadas Belonging t'o the Genus Okanagana 233 



Louis H. Joutel 239 



DicKERSON, Edgar L., and Weiss, Harry B., 



The Ash Leaf Bug, Neoborus Amoenus Reut 302 



Felt, E. P., 



New Western Gall Midges I75 



Forbes, Wm. T. M., 



On Certain Caterpillar Homologies I37 



Frost, S. W. 



Biological Notes on Ceutorhynchus Marginatus Payk 243 



GiRAULT, A. A. 



A Remarkable New Genus of Encyrtid2e from the West Indies, 



Bearing Two Ring Joints 232 



Hebard, Morgan, 



A Study of the Species of the Genus Stenopelmatus Found in 



the United States 70 



Leng, Charles W., 



Notes on Cychrini 39 



Notes on Alleculidse 142 



Matausch, Ignaz, 



Notes on a Peculiar Nymph-Variation of Enchenopa Binotata. 151 

 Parker, R. R., 



Sarcophagidae of New England 171 



Notes Concerning Gastrophilus Hsemorrhoidalis Linn 253 



iii 



