A DESCRIPTIVE CATALOGUE OF THE HARVEST-SPIDERS (PHAL- 



ANGIID^) OF OHIO. 



BY 



Clarence M. Weed, D. Sc, 



Professor of Zodlo;^y in tlic Neio HaiitpsJiirt College. 

 (With Plates lvii-lxix.) 



Tbo present paper is based upon a study of a large collection of 

 harvest-spiders from all parts of Ohio, gotteu together during the 

 writer's connection with the Ohio Agricultural Experiment Station 

 from 1888 to 1801. Most of the specimens Avere taken, by myself or my 

 assistants, in Franklin County, in the central part of the State, but 

 good series were also obtained from Butler, Cuyahoga, Fairfield, Ful- 

 ton, and Warren counties, so that all the regions of the State are fairly 

 well rejjresented. 



The Phalangiid fauna as a whole is quite similar to that of Illinois, 

 which I catalogued in 1887,* It is very much richer in species than 

 either I^ew Hampshire on the north (six species) or Mississipi)i on the 

 south (three species), both of which I have recently treated of.t The 

 family seems to reach its maximum development in the latitude of 

 central and southern Oliio. 



The figures accomi)anying were drawn by Miss Freda Detmers, under 

 my direction. Most of them have been used ni previous papers, but 

 some appear here for the first time. The localities are given by counties. 



Family PHALANGIID.E. 



Subfamily PnALANGimYE. 



Members of this subfamily are Arachnids liaving the body com])osed 

 of a single piece, and long, slender legs. The teguments are not coria- 

 ceous, though often (juite solid. The segments are only indicated by 

 striji:», which are often obsolete. There are five ventral abdominal seg- 

 ments; a single anal piece, and two distinct lateral pores on the upper 

 margin of the cephalothorax. The maxillary lobe of the palpus has 

 two tubercles, and the epistoma is in the form of an elDiigatcd tiian- 

 gular plate. 



^ Hull. 111. St. Lai.. Nat. lii.st.. iii. 97. 



tTiaiKs. Am. Kiit. Sue., xix, 2()1 ; I'.sytbc, VI, 425. 



Proceediufj.s National Museimi, Vol. XVI, Xo. 950. 



54o 



