422 PROCEEDINGS OF THE ACADEMY OF [1890. 



are separated by about their diameter from one another. The 

 dorsal eyes are somewhat smaller and are a little farther apart. 



The following key will serve to distinguish the species which I 

 have found in eastern Pennsylvania and New Jersey : — 

 /. Abdon:en with a distinct median brown band running its entire 

 length, and bordered on each side by a buff band. Thorax buff, 

 with brown stripes. 



a. Median band with edges entire. L. punctulata. 



aa. Median band with edges notched anteriorly, and including 



several pairs of buff spots posteriorly. L. scutulata. 



II. Abdomen never with a median brown baud running its entire 



length (except L. arenieola, in which case the thorax is not 



banded buff and brown.) 



a. Cephalothorax not banded, or with a narrow light median 

 band not nearly as broad as the eye-area. 



b. Cephalothorax polished and shining, with a few scat- 

 tered hairs. 



c. Abdomen light gray, sometimes nearly white, with a 



median notched brown band. L. arenieola. 



cc. Abdomen mottled with black and buff; no distinct 



figure. L. polita. 



bb. Cephalothorax covered with short hairs, not polished. 



c. Femora strongly banded above and below. 



L. tigriiia. 

 cc. Femora not banded. 



d. Intensely black beneath ; band on the cepha- 

 lothorax obsolete. L. carolinensis. 

 dd. Brown beneath, Avith a few black dots ; band 

 on the cephalothorax distinct. L. nidicola. 

 aa. Cephalothorax with a light median band as broad anteriorly 

 as the eye-area. 



b. Abdomen with a central light band running its entire 

 length, and which contains a short dark band, 

 c. Under side of abdomen uniform light buff. 



L. ocreata. 

 cc. Under side of abdomen with a semi-circular black 

 mark, or black, with two central light spots. 



L. communis. 



