Superfamily Argiopoidea 



dominal part of the stridulating 

 organ (Fig. 366). No female has 

 been described. 



Coleosoma fioridana (C. flor-i- 

 Fig. 366. outline of body da'na).— This is the only repre- 



OF COLEOSOMA (after Keyserling) . , . r i 



sentative 01 the genus yet found 

 in the United States. It is a small species, the male measur- 

 ing less than one tenth inch in length. It has been taken in 

 Florida. 



Genus LITHYPHANTES (Lith-y-phan'tes) 



The slight but distinct separation from each other of the 

 lateral eyes of each side distinguishes this genus from the 

 closely allied genera, except perhaps Asagena, in which there is 

 a slight but less distinct separation of these eyes. Lithyphantes 

 differs from Asagena in that the point of the sternum extends 

 about halfway between the posterior coxae, and in the narrower 

 clypeus. The males possess stridulating organs. Five species 

 occur in our fauna; they live under stones; the two following 

 are the most common. 



Lithyphantes corollatus (L. cor-ol-la'tus). — The cephalo- 

 thorax is dark brown; in the more common forms the abdomen is 

 yellowish above with four or five, more or less connected, trans- 

 verse, brown bands (Fig. 367), and dark below with three narrow, 

 yellow lines, which are connected behind ; but the species is ex- 

 ceedingly variable. The length of the female varies from one 

 fifth to one fourth inch. This species is very widely distributed 

 in the North. 



Lithyphantes fulvus (L. ful'vus). — The cephalothorax and 

 legs are reddish; the abdomen is brownish yellow, with two white 

 spots on each side, a median band or a series of white spots above 

 the spinnerets, and a spot on the ventral aspect of the abdomen 

 of the same colour (Fig. 368). The length of female varies from 

 one fifth to one fourth inch. This is a Southern species which 



occurs from Florida to Texas and northward. 



1 



Genus ASAGENA (As-a-ge'na) 



The lateral eyes of each side are slightly separated, but to 

 so slight a degree that they often appear contiguous; hence this 



362 



