AHAOHNIDES ARANEIDES ORBITELARI2E. 87 



as the cephalic part of the corselet, blackish, globular, its proximal end as 

 preserved lying just beyond the tip of the cheliceres, the stalk not pre- 

 served. Abdomen lighter colored than the cephalothorax, smaller than it, 

 subglobular, a little flattened at base, with a pair of subdorsal series of black 

 points in a slightly curving- row, its convexity outward ; the anal plate 

 darker, circular, not half so large as the apical joint of palpi. Legs long, 

 of "very unequal length, the femur much stouter than the tapering parts 

 beyond, furnished rather abundantly with diverging spines nearly to the tip. 



Length of body, 3.5 mm ; of cephalothorax, 1.7 """ ; of abdomen, 1 .:."""; 

 of cephalic portion of corselet, 0.6 ram ; of cheliceres, 0.65"""; breadth of 

 cephalothorax, 1 G mm ; of abdomen, 1.6" 1 " 1 ; diameter of palpal swelling, 

 0.65' nm ; length of first pair of legs, 7.25 mm ; femora, 2 mm ; tibia), 2""" ; tarsi, 

 3.25 mm ; second pair of legs, 6"""; femora, 1.4 mm ; tibia?, 2" im ; tarsi, 2.6 mm ; 

 third pair of legs, 2.9 mm ; tarsi, 1.4 mm ; fourth pair of legs, 4.7"""; femora, 

 1.65 mm ; tibia-., 1.25 mm ; tarsi, 1.8""". 



This species resembles I-'., emertoni in general aspect, but is much larger 

 than it, and differs from it in several important points, such as the rotundity 

 and especially the much greater size of the cephalothorax as compared with 

 the abdomen, and the greater stoutness of the femora. 



Florissant. One <$, No. 5784. 



<!. EPEIRA EMERTONI. 



PI. 11, Figs. 15(3), 19(2). 



Male. Cephalothorax dark brown, subglobose, a little longer than 

 broad, the cephalic only distinguished from the thoracic portion by a slight 

 bend in the curved outline ; front well rounded with no sign of eyes ; last 

 joint of palpi blackish, very large, globular, more than half as large as the 

 cephalic portion of the cephalothorax, nearly twice as broad as the length 

 of the basal joints, containing a falcate ribbon of slender and uniform width, 

 nearly as long as the diameter of the joint, bent at its distal edge, bluntly 

 pointed at the tip, which is situated near the middle. Abdomen light brown, 

 globular, slightly larger than the cephalothorax. Legs moderately, long, 

 rather sparsely haired, the femora tolerably stout and furnished with dis- 

 tant, slender, divergent spinules, hardly so long as the width of the joint, 

 and which also appear in one or two places only on the tibiae 



Female. Cephalothorax black, globular, with no sign of. distinction 

 between the cephalic and thoracic portions ; neither eyes nor palpi are pre- 



