Dendryphantes militaris.—This spider resembles in many ways the next species, Dendryphantes æstivalis, but is one-half larger and has a shorter and wider cephalothorax. The general color is brown, covered with gray and black hairs. The abdomen of the female is brown, with white at the front end and four pairs of oblique white marks in the middle and four at the sides [(fig. 140)]. In the male the cephalothorax has a white band on each side under the eyes and a white band around the abdomen, with a dark middle area [(fig. 141)]. The dark parts of the legs and cephalothorax are darker than the same parts in the female. The palpi are slender in both sexes, and in the male the palpal organs are small for so large a spider. The mandibles of the male are widened at the end and have a strong projection with two teeth on the inner corners.

Dendryphantes æstivalis.—One of the most common Attidæ, on all kinds of bushes and small trees, and one of the most variable in size and color. Large females are from a fifth to a quarter of an inch long, and the males are smaller. The females are of two varieties, which run into each other. The light variety [(fig.144)] has the light parts white or light yellow and the dark parts dark brown covered with white hairs and scales. The cephalothorax is dark brown, thinly covered with scales, so that the dark color shows between them in places. The legs are light yellow and translucent, indistinctly ringed with brown at the base and, near the tip of each joint, all covered with greenish white hairs. The palpi are light and without rings except on the femur and patella. The abdomen is brighter yellow than the thorax, with four pairs of purplish brown spots, the second pair largest, connected with a paler brown middle marking. The abdomen has beneath a purple brown stripe in the middle and oblique brown marks at the sides. Sternum, maxillæ, and mandibles light brown. The dark variety [(fig. 143)] is generally smaller and covered with longer hairs and scales. The legs and palpi are more distinctly ringed with brown. The dark spots on the abdomen are larger and more closely connected, so that the markings appear as light spots on a dark ground.

In alcohol they become bright red and afterward fade to a dull red color that remains for a long time, both varieties in this condition looking much alike.

The males [(fig. 142)] differ, at first sight, extremely from the females. The legs are ringed as in the female and the brown parts are wider and less obscured by white hairs, while the white parts are whiter. The cephalothorax is dark brown, with a white stripe on each side under the eyes bending toward each other but not connected. The front of the head is also white and covered with long white hairs. The palpi have the femur dark brown at the base and white at the end. The patella and tibia are brown, and the tarsus is brown, with white hairs on the upper side. The abdomen is white in front and around the sides. The middle is dark brown, with a few yellow and greenish scales. The brown area is often notched at the sides in four points and sometimes indistinctly divided into four pairs of spots, as in the female. The male palpi are large for the size of the spider, and the palpal organ extends back beyond the tibia.