PEEFACE. 



Alb 6ft (iri Svgx^pO'i'Vit.v rtaiStxuij trv rtfpt Tuiv a-tifiotapoiv f^wv Ifti- 

 dxt-^iv. Ef rtocrt yap t'oij ^vaixotj fvfort rt ^avfiaatov' xai xa^aAtp 

 HjjctzXttT'oj T.EytT'ot rtpoj T'ovj Isvovj {irtfCf T'ovj ^ovXofiivovi iv-tvxflv 

 avtui, ul trtciBrj Ttpostovtii (l8ov avrov ^epo/xsvov rtpoj ^9 Irtvqi tattjoav 

 (IxiXsDS ydp avtovi tiaiivai, ^appovvraj' tZ/'ot ydp xal tvtav^a ^sovi), oiifw 

 xai rtpoj T'lji' ^r^trjaiv jttpi ixaatov rtov ^ojwi' rtpoffii^at Sfi juij hvauircovfievov 



(Wherefore we ought not childishly to neglect the study even of the 

 most despised animals, for in all natural objects there lies something 

 marvellous. And as it is related of Heraclitus that certain strangers who 

 came to visit him, when they found him warming himself at the kitchen- 

 fire, stopped short — he bade them enter without fear, for there also were 

 the gods : so we ought to enter without false shame in the examination 

 of all living beings, for in all of them resides something of nature and 

 beauty.) 



Akistoteles, de partibus animalium, I, 5. 



The present volume contains the first part of a monograph of 

 the North American Tipulidae, that is, the Tipulidse hrevipalpi, 

 the Cylindrotomina, and Ptychopterina. The Tipulidae longi- 

 palpi are reserved for another volume. 



The ground covered in this monograph is the same as that of 

 my former essay : New genera and species of the North American 

 Tipididee with short jmlpi, with an attempt at a new classification 

 of the tribe (in the Proceedings of the Academy of Natural Sci- 

 ences of Philadelphia, 1859), that is, it embraces all the known 

 North American species,' at the exclusion of those from the West 



' The described species belong to the Atlantic States of the Union ; only 

 two Californiau species have been added. 



( iii > 



