20 J. H. Emerton — New England Therididw. 



the riolit palpus used by the same jtuir for an hour. Tlie adult males 

 and females occur at all seasons. This species is found also under 

 stones and logs, with more or less web, which becomes torn in finding 

 them. 



Eastport, Me. ; Montreal, Canada ; White Mountains ; Massachu- 

 setts; Rhode Island and Connecticut. 



Steatoda, guttata (Reuss) Thor., Synonyms of European Spiders. 

 Plate IV, figures 2 to 21. 

 This spider is about 2'"'" long. The cephalothorax and abdomen 

 are about equal in length. The abdomen is nearly spherical and is 

 hard at the forward end, where it has a horny ring around its attach- 

 ment to the thorax. The thorax is high and spotted. Fig. 2, with 

 large dark colored hairs, at the base of each of which is a horny ridge. 

 Similar ridges occur on the sternum. There are tw^o varieties of 

 coloring which run into each other. In one variety the abdomen is 

 yellow or orange, without markings, or only faint indications of them, 

 the legs are yellow, and the thorax dark brown. In the other variety 

 the thorax is dark brown, the legs are yellow, with indistinct rings 

 at the ends of the joints, and the abdomen dark brown, somewhat 

 like horealis, with light spots and several silvery white spots, usually 

 two on each side, one in front, one behind, and one or two in the 

 middle line. There are also light spaces around the four dorsal 

 muscle-spots. Fig. 2. The two color varieties are equally common, 

 but I have not found both in the same place. This species is common 

 under stones at all seasons. Adult males and females found abund- 

 antly in April and May. 



Steatoda marmorata (iientz). 



Theridion marmoratwm Hentz. 



Steatoda ruralis Keys., specimen named in Mus. Comp. Zool., Caml)ridge, Mass. 

 Plate IV, figures 3 to 3/ 



Both sexes 6'"'" or 7""" long. Tlie cephalothorax and legs yellow- 

 ish brown, dark in old specimens and light yelloAv in young. Legs 

 covered with fine dark hairs. The markings on the abdomen are 

 variable. The two extreme forms are shown in Figs. 3, 3a. In most 

 specimens there is an oblong dark spot that nearly covers the back 

 of the abdomen. Fig. 3a. This is darkest at the edges, especially 

 the hinder edge, and is bordered outside by silvery white. The sides 

 are usually more or less scalloped. The middle is lighter Avith a 

 central dark stripe. In other individuals of either sex tlie dark 



