207 



1 8, and in the Cottonwood forest Oct. 13. It was abundant among 

 the leaves of a shrub — the spice-bush (Benzoin). 



McCook ('89, Vol. 1, pp 78-79, 116, 255, 288, 339, and '90, Vol. 

 2. pp. 86-88, 224, 334) records many observations on the habits of 

 this species, and, more recently, Porter ('06) has studied an allied 

 species. 



Bpeira tririttata Keys. Three-lined Spider. (PI. LIII, figs. 1 and 2.) 

 A single specimen was taken on a web in the lowland forest ( Sta. 

 IV, c) Aug. 22 (No. 138). 



Bpeira verrucosa Hentz. White-triangle Spider. (PI. LIII, figs. 3 

 and 4. ) 



This species was taken from webs stretched between trees in the 

 forest (Sta. IV) "Aug. 16 (No. 70) ; and again at the same Station 

 Aug. 22 (No. 126). The individuals taken were always at the center 

 of their webs. 



The peculiar whitish, leaf-like triangular area on the dorsal sur- 

 face of the abdomen is a striking pecularity of this species. It is as- 

 sociated in habitat with Acrosoma spinea Hentz, and A. rugosa 

 Hentz. 



Acrosoma spinea Hentz. Spined Spider. (PI. LIV, figs. 1-5.) 



From webs connecting trees in the damp lowland forest (Sta. 

 IV, c) this spider was taken Aug. 22 (No. 138) and Aug. 26 (No. 

 T72) ; and another individual (No. 148) was taken Aug. 23 (Sta. 

 IV) from a small web on a low sassafras shrub within two feet of 

 the ground. It feigned death when placed in a vial, the hind legs 

 being closely applied to the abdomen, the others being folded against 

 the cephalothorax. The two large posterior spines on the abdomen 

 of this species make it conspicuous. 



This is a representative forest-inhabiting species ; its web and 

 those of rugosa, generally placed at about the height of a man's head, 

 are often so abundant, at least during August, as to be bothersome 

 when one after another is swept from the trees by one's face. Be- 

 cause of the tension of these threads few persons care to have them 

 accumulate on the face. 



McCook ('89, Vol. 1, pp. 126-127) nas recorded observations 

 on this species. 



Acrosoma rugosa Hentz. (gracile Walck.). Rugose Spider. 



This spider was taken from webs connecting trees and shrubs 

 in the upland forest (Sta. IV, a) Aug. 16 (No. 70) and Aug. 22 (No. 

 126); on a web in the forest (Sta. IV) Aug. 23 (No. 147), with 

 the apex of the ventral abdominal cone turned uppermost at the cen- 



