646 PROCEEDINGS OF THE ACADEMY OF [Oct.. 



middle, so that in front it is barely one-half its greatest transverse 

 diameter. The dimensions of this o^ are: 



Length of cephalothorax, 4 mm. 



Length of abdomen, 3.5 " 



Length of first leg, 13.3 " 



Length of second leg, n.5 " 



Length of third leg, .' 10.8 " 



Length of fourth leg, 16 " 



In color the pattern of the cephalothorax and the color of the sternum 

 and inferior surface of the coxte is as in the 9 ; the abdomen has a more 

 distinct dorsal pattern, and the deep black of the venter (containing 

 minute yellow spots) extends further up the sides than in the ? . 

 But the main color differences in the d" are in the legs : the coxae of 

 all the pairs are black; all the other joints of the three posterior pairs 

 are clear yellow with an indistinct darker annulus on each patella; in 

 the first pair the femora are clear yellow, the patellte the same color 

 with a dark ring, the tibiee and proximal portions of the tarsi deep 

 Ijlack. the remaining portion of the tarsi and the metatarsi (except 

 a black ring at their distal ends) pale yellow. The palpi have the 

 femora and proximal halves of the tarsus black, the other parts yellow. 



This (j' differs from the o' of Lycosa (Tarentula) ynodesta (Keys.) in 

 its smaller size, differences in the ocular arrangement, and in the 

 coloration of the legs and sternum. 

 3. Lycosa charonoides Montg. 



A male of this species, hitherto known only by the ? , was secured 

 from the same locality (Philadelphia), and its description follows: 



There are differences from the ? in the ocular arrangement; the eyes 

 of the second row are less than their diameter apart, and the dorsal 

 eye area not more than one-sixth the length of the cephalothorax. 

 The dimensions (taken in life) are : 



Length of cephalothorax, 4.3 mm. 



Length of abdomen, 4.2 " 



Length of first leg, 12 " 



Length of second leg 11 " 



Length of third leg, 10.5 " 



Length of fourth leg 15 " 



Colors in Life. — Cephalothorax marked with black and ' brown, as 

 follows: a median brown band, as broad anteriorly as the eye area 

 and extending back almost to the edge of the thorax ; sides with radi- 

 ating brown markings, and a marginal and submarginal brown band, 

 both interrupted ; all the brown color is due to the presence of hairs, and 



