_Legs_: First two with trochantins, claws simple, legs covered with almost clavate hairs. _Habitat_: Barns or buildings of this community; also found in some of the common trees, such as the oak and sycamore. This was collected in Whittier, Claremont, Lytle Creek and San Antonio canyons, and the smaller canyons near Claremont. _Chelifer fuscipes_ Banks. Figs. 1 and 2 _Description_: Length of animal, including mandibles, 4 mm.; pedipalps, 5.5 mm.; claw, 2 mm. Color--Pedipalps, reddish brown; cephalothorax, reddish brown; abdomen and legs, light brown. [Illustration: Figure 1. _Chelifer fuscipes_ Banks. From below and above. ×25.] [Illustration: Figure 2. _Chelifer fuscipes_, third leg and mandible much enlarged.] _Cephalothorax_: As long as it is broad. Upper edge almost truncate, yet rounded; sides evenly convex, lower edge almost straight. Cephalothorax finely granulate and heavy, simple spine-like hairs placed in a definite order. One distinct median suture. Two eye spots. _Abdomen_: Half as broad as it is long and divided into twelve scuta. The outer edges of each scutum are prolonged into curved hooked spines. The first scutum is the shortest and broadest, and has the heavier spine or hook, while the last two segments often lack the hook. The abdomen is finely granulate and at the lower edge of each scutum there are eight heavy, short, simple hairs. _Pedipalps_: Longer than body, coxa smooth, trochanter with large protuberance ending in a strong spine on outer side; femur longer than cephalothorax, slightly concave on inner edge, convex on outer edge. Tibia pedicellate, shorter than femur. The trochanter, femur and tibia are all granulate and sparsely covered with short, simple hairs. Claw large, hand broad, smoothly convex on both sides; finger as long as the hand and slightly curved. It is also provided with long, tactile hairs. [Illustration: Figure 3. Pedipalp of _Chelanops serratus_ n. sp. ×50.] _Mandibles_: Small for size of animal; fixed finger provided with small teeth. Serrula attached throughout the length of moveable finger. Flagellum divided into small parts. Spinnerets small and transparent. _Legs_: First three legs with trochantins, claws simple, legs covered with simple hairs. _Habitat_: Sycamore canyons, Laguna Beach, Whittier Hills, Cucamonga canyon, Arrowhead canyon, Lytle Creek canyon, Evey's canyon, San Antonio canyon, and from oak and sycamore trees around the college campus. _Chelifer scabrisulis_ Simon I will not describe the details of this species, because it is so much like the last described, differing from _C. fuscipes_ by not having the prolonged hooks like spines, on the outer edges of each abdominal scutum. The color differs from the other two. The abdomen and legs are light brown. The cephalothorax and palps are a little darker yellowish brown. The habitat of this species was the same as that of _C. fuscipes_. When collecting, they were generally found together. _Chelanops oblongus_ Say