REVISION OF BORARIA AND GYALOSTETHUS — ^HOFFMAN 339 



deeply depressed and excavated, with an elevated thin posterior rim 

 between the coxae of the posterior legs; sterna smooth and glabrous, 

 no subcoxal spines formed. 



Legs fairly long, 3 distal podomeres visible beyond edges of paranota 

 when extended laterad; coxae unspined, prefemora with small, short 

 distal spines (fig. 22) ; pretarsi very small, evenly curved, largely 

 concealed by the long, slender, terminal tarsal setae. Sides of seg- 

 ments smooth and polished except for a horizontal ridge just above 

 coxae of posterior pair of legs on segments 3-15 or 16, the ridge largest 

 (and tuberculate) on anterior segments, becoming smaller caudally. 

 Anterior stigma about 3 times as large as posterior, subcrescentic 

 in shape, neither stigma with elevated rims or otherwise modified. 



Legs and sterna of anterior segments without special processes or 

 other modifications. Gonopod aperture small, oval, the posterior 

 edge elevated into a distinct smooth flange. 



Gonopods large, extending cephalad between legs of 5th segment; 

 of the form shown in figure 24 ; coxae simple, without ventral apophyses, 

 telopodite attached at a right angle, slender, the prefemoral region 

 not much enlarged, with a short, acicular prefemoral process; telopodite 

 beyond prefemur, a narrow, nearly straight, subterminally bigeniculate 

 blade, the end expanded and lamellate, finely laciniate; no separate 

 solenomerite developed. Prefemur about 50% of the total length of 

 telopodite. 



Cyphopods of the form shown in figure 25; the receptacle present 

 but greatly reduced in size to a simple rolled plate for muscle attach- 

 ment; valves approximately subequal, but inner valve smaller toward 

 its distal end; a large simple rounded seminal receptacle present. 

 Both valves and operculum densely set with long slender macrosetae. 

 No special modifications of 2nd legs or epigynal region of 3rd segment. 



Range. — Southern Appalachian region from Virginia to Georgia 

 and Alabama (fig. 26). 



Species. — One. Gyalostethus monticolens is a not uncommon 

 endemic form of the southeastern United States. 



The name Gyalostethus derives from the Greek gyalos (concave) 

 plus stethos (chest) . 



Gyalostethus monticolens (Chamberlin), new combination 



Figures 20-26 



Boraria monticolens Chamberlin, 1951, p. 26, fig. 16. — Chamberlin and Hoflfman, 

 1958, p. 23. 



