tipulid^t:. 31 



harvest spiders. The Englisli name of "crane-Hies" is }»refer- 

 ahle. Commonly they are harmless, but some of the species 

 in the larval state are very destructive, feeding upon the ten- 

 der rootlets of grass and grain, and causing the plants over 

 large surfaces to wither and die. There are about twelve 

 hundred species known. 



In this family are placed several wingless forms, or those 

 with the wings more or less rudimentary. One of the former 

 is Clilonea, the species of which are found on snow, often in 

 the coldest weather. 



The family Tipulidse is easily divided into three subfamilies, 

 which I prefer to call the Ptychopteringe, Limnobiinae and 

 Ti})ulina3, and which correspond precisely with the Ptycho])- 

 terina, Tipulida^ longipalpi and Ti])ulidce brevipalj)i of Osten 

 Sacken. 



TABLE OF GENERA. 



1. Seventh lonfj^itiidinal vein present, that is there are two longitudinal 



veins between the fifth vein and the posterior margin of the wing. 2 



Seventh longitudinal vein absent; no distinct V-shaped suture on 



niesonotuni I'tychopterin^;. 



2. Last joint of the palpi shorter or not much longer than the two preced- 



ing together; the auxiliary vein usually ends in tlie costa and is 

 connected with the first longitiulinal vein by a distinct cross-vein ; 



antenna; six to sixteen jointed Limnobiinm:. 



Last joint of the palpi whiplash-like, much longer than tlie three pre- 

 ceding together; antenna; composed of not more than thirteen joints ; 

 the auxiliary vein ends in the first longitudinal vein by an abrupt 

 curvature at the tip, not connected with the first vein by a cross- 

 vein. .......... 'ril'lILIN.K. 



LIM\()I{IIN.T<;. 



1. Wingli'ss, spider like in ai)])earance. . . . Cmionka Dalman. 

 Winged -2, 



2. Antenna' com])osed of apparently 28 joints, long; anal cell (4«**cd ; no 



enipodia or spurs (Wi'st Indies, South America). 



I'oi.VMiCKA W ii'demann. 

 Antemia' not aj)j)arentl\- composed of more than Ki joints. . ;« 



