424: PROCEEDINGS OF THE ACADEMY OF [1890. 



indications of black markings; beneath brown. Tiie abdomen 

 marked with black dots, and usually with three dark bands uniting 

 towards the posterior extremity. The legs are brown ; the femur, 

 patella and tibia with light and dark bauds. The male is much 

 lighter colored, and the bands on the thorax are very prominent. 

 The under side of the abdomen in one specimen has the black 

 bands very well marked, while in another it is uniform buff with a 

 few black dots. Length of adult female, 25 mm. 



This species, especially the light-colored male, somewhat resembles 

 Dolomedes tenebrosus at first sight. 



Adult males and females were collected under stones in wood- 

 land during the last week of August. The eggs had not yet been 

 deposited. Two adult females were collected in a similar locality 

 in York County, Penna., June, 1890. One of them had constructed' 

 a nest by hollowing out the earth under the center of the stone. 

 From this a tunnel ran out to the edge of the stone, and at the 

 mouth of this tunnel the spider probably watched for her prey. 

 The whole floor of the nest was strewn with portions of beetles, 

 mainly of the green Cicindela sexguttata. 



L. nidicola, Emerton. 



Above dark brown, with a narrow light band on the cephalo- 

 thorax, and a submarginal light band on each side. There is a 

 light band on the anterior })art of the abdomen, in which is a 

 shorter dark band. The abdominal markings, however, are often 

 very obscure in the females. Beneath the abdomen is brown, with 

 small black dots. Legs uniform brown. The male is lighter, and 

 the markings are more distinct, and there are traces of two light 

 lines from behind the dorsal eyes. Length of female, 18 mm. 



This is the commonest species in the vicinity of Philadelphia. I 

 have frequently found it under stones in woodland, and also 

 inhabiting burrows similar to those of L. carolinensis. Nearly 

 adult females have been taken in these holes as early as April 14th. 

 While digging one of them out of its burrow some years ago I was 

 bitten on the end of the finger. The pain was rather more intense 

 than that experienced from the sting of a bee, and extended through 

 the whole forearm. It did not last, however, more than half an hour, 

 though the finger remained swollen for some time. I have taken 

 this species in Philadelphia, Chester and York Counties, Penna., and 

 at Pt. Pleasant, Ocean County, N. J. 



