310 



THE CANADIAN ENTOMOLOGIST. 



behind. Endites slender and inclined towards each other. Abdominal 



sclerites well developed, the dorsal one covering nearly the whole upper 



surface, the antemainmillary sclerite in the form of a ring surrounding the 



spinnerets, epigastric sclerite very large, completely surrounding the 

 pedicle as a broad plate. Legs yellowish-brown, the patellae much lighter, 

 anterior femora enlarged and armed below with a series of eight or nine 

 strong spines. Palpus with the femur rather long and slender, patella 

 short and rounded, tibia short, prolonged on the outer side, and bearing 

 near the margin a row of long hairs. 



Female : Much like the male in colour, but lacking the dorsal 

 abdominal sclerite. The cephalothorax is not so strongly prominent in 

 the eye region, the anterior eyes not being borne on a protuberance are 

 therefore much closer together. Anterior femora neither enlarged nor 

 armed with a series of spines. The epigynum consists of a large convex 

 sclerite, the posterior margin of which is raised into a thin transverse, 

 nearly vertical plate, which bears a very small obtuse tooth at the middle. 

 The ducts are united just in front of the opening, which is small, round, 

 and situated on the inner side of the plate near its posterior margin. 



The proportions of the segments of the legs are shown in the follow- 

 ing table : 



Male. 



LEGS. 



Tar. 

 Met. 

 Tib . 

 Pat. 

 Fem 



Tar. 



Met 



Tib. 



Pat. 



Fem 



I. 



.24 

 .28 

 .28 



•17 



•47 



26 

 29 



31 

 17 



5 



IL 

 .21 

 .21 



•23 

 •15 



•37 



Female. 



Beersheba, 



24 



•23 



•25 

 ,16 



•43 



in. 

 .18 

 .18 

 .18 



•13 

 •3 



.21 



•17 

 .19 



.14 



.22 



IV. 



2 r 



23 



25 

 14 

 4 



•23 

 .24 



.26 



.•17 

 .48 



PALPUS. 



.19 



.09 

 .07 

 ,14 



Tennesee and District of Columbia, contained in a 

 collection purchased by Cornell University from William Fox, and bearing 

 the label " Ceratinella unimaculata^ Marx, MS." Type in the Cornell 

 University collection. 



