1904.] NATURAL SCIENCES OF PHILADELPHIA. 297 



Color of Males (in alcohol). — Differ from the female as follows: The 

 abdomen above is orange-brown (more clear orange anteriorly) ; at 

 each antero-lateral angle arises a broad black band that extends on 

 the side posteriorly as far as the middle ; venter pale brownish laterally, 

 the median region behind the lung-books being silvery mth a pair of 

 closely approximated narrow, darker longitudinal lines. The coxce 

 and femora are greenish below. Palpi with all the joints brown above 

 and greenish below, except the tarsus, which is wholly black. 



Comparisons. — A species very well marked by the great width of 

 the head region, and the gradual slope of the dorsal contour of the 

 cephalothorax. 



Geolycosa baltimoriana (Keys.). PI- XIX, fig. 19. 



Tarentula baltimoriana Keyserling, 1876. 

 Lycosa baltimoriana (Keys.), Montgomery, 1902. 



(In addition to the single male originally described by me, I have 

 secured three additional males from the vicinity of Austin, Texas.) 



Eyes. — First row nearer the clypeal margin than the second row, 

 almost as broad as the second, its eyes equidistant, the middle eyes 

 higher and fully twice the size of the lateral. Eyes of the second row 

 largest, about three-fourths their diameter apart. Third row broader 

 than the second, its eyes almost 1.5 their diameter behind the second 

 row. Dorsal eye area one-fifth the length of the cephalothorax' 

 Quadrilateral of the posterior eyes broader than long. 



Form. — Cephalothorax in front quite one-half its greatest transverse 

 diameter, highest at the posterior eyes, the posterior declivity inclined 

 at fully 45° with the dorsal outline. Head rather oblique and rounded. 

 Chelicera longer than the clypeus broad, almost twice the height of the 

 head in front, with three pairs of teeth. Labium longer than broad, 

 apically concave, less than one-half the length of the maxillae. Ster- 

 num longer than broad. Spinnerets adequal in length. Legs long and 

 slender, the first slightly thicker than the other (most noticeably its 

 tibia), and shorter than the fourth by only one-third the length of its 

 tarsus. Metatarsus IV shorter than patella and tibia combined. On 

 all the femora the hairs are short and few ; there are thick scopulse on 

 the tarsi and metatarsi of I and II, and on the tarsi of III and IV. 

 Leg IV to cephalothorax as 3.5 : 1. 



Dimensions. (^ 



Cephalothorax, 9 



Abdomen, 7 



Leg I, 29.5 



Leg II, 28 



