Page:The Salticidae (Spiders) of Panama.djvu/258

 Sternum. Longer than wide in ratio of 3 : 2; scutiform; widest between second coxae, but nearly as wide between first; quite convex; terminates posteriorly in a blunt point which is not extended between fourth coxae which are separated by three tenths of their diameter.

Legs. 1423. Tibial index of first and fourth legs 17.

Legs without fringes. First leg considerably extended and first femora somewhat enlarged but not greatly so.

Spines. First leg: femur dorsal 0-0-1-1-1, prolateral distal 2; patella only prolateral 0-1-0; tibia only prolateral 0-1-0, ventral 1r-1r-2 on right, 1r-2-2 on left; metatarsus only ventral 2-2. Second leg: as in first except metatarsus ventral 1r-2. Third leg: femur dorsal 0-1-1-1, prolateral and retrolateral distal 1; patella only retrolateral 0-1-0; tibia only prolateral 0-1-0; retrolateral 0-2-0, ventral 0-0-2; metatarsus prolateral 0-0-2, retrolateral 0-0-1, ventral 0-0-2. Fourth leg: femur and patella as in third; tibia prolateral 0-1-0, retrolateral 0-1-0, ventral 0-0-2; metatarsus as in third.

Palp. Both tibia and patella short with former only a little more than half as long as latter; femur much bent; tibial retrolateral apophysis long, slender, and sinuous; embolus sickle-shaped from an expanded base (Figs. 215–216). At distal end of femur is a dorsal snow white cap of scales which may extend over a much longer part of the segment in life.

Abdomen. Ovoid, longer than wide in ratio of 13 : 8; widest near middle; all spinnerets short, first pair most robust, third pair somewhat slender and plainly two-jointed, middle pair shortest and closely surrounded by others; tracheal spiracle near base of spinnerets; apparently colulus indicated by a very small tuft of black bristles.

Color in alcohol. Legs: first and second pairs of coxae dull brownish, others lighter; all femora dark brown with scattered white scales, first pair with a rather conspicuous prolateral white patch of scales; all patellae yellowish tipped with reddish brown; all tibiae reddish brown; first metatarsi yellowish in proximal third, elsewhere reddish brown, second and third metatarsi yellowish except reddish brown distal ends,