$Neon nellii.$--This is one of the smallest spiders of the family, only a tenth of an inch in length. The general color is dark gray, darkest toward the head. The cephalothorax is high, the highest part being a little behind the middle, from which it curves downward to the front eyes and slopes abruptly backward (fig. 130). The eyes are large and prominent, the front row nearly straight and as wide as the widest part of the cephalothorax. The posterior eyes are nearly as large as the front middle pair and are in the middle of the cephalothorax. The abdomen is a little longer and wider than the cephalothorax (fig. 131). The cephalothorax is smoky gray, darker toward the front and darker in males than females. The abdomen is gray, with yellowish markings in a herringbone pattern through the middle. Common under stones and leaves at all seasons. [Illustration: FIG. 132. Zygoballus bettini.--Female enlarged eight times.] $Zygoballus bettini.$--This is a very beautifully colored spider, having in life spots of white hairs and shining scales of the color of copper and bronze. The cephalothorax of both sexes is high and wide in the middle and slopes down steeply from the posterior eyes under the front of the abdomen (fig. 132). The top of the cephalothorax between the eyes is nearly square. The posterior eyes are almost the full width of the cephalothorax apart, and the front row of eyes is nearly as long. The cephalothorax is dark brown covered with iridescent scales. The legs are pale, except the dark femora of the first pair and dark spots on the ends of the joints of the fourth pair. In the male all the legs are a little darker than in the female and without the spots on the fourth leg. The abdomen of the female is light brown, marked with white in a row of irregular spots. In the male the abdomen is brown, covered with shining scales and with a white band around the front and two white spots on each side. The mandibles of the male are much elongated and bent apart at the ends to make room for the long claw. At the inner angle is a large tooth, and there is another one of complicated shape on the middle of the under side. [Illustration: FIG. 133. Phidippus multiformis.--Female enlarged six times.] $Phidippus multiformis.$--This is a very common spider on plants throughout the summer. It matures in July, and the males and females are so little alike as to be taken for different species. The males (fig. 134) are black, with white and orange markings on the abdomen, while the females are brown mixed with black, white, and yellow scales and small white spots. [Illustration: FIG. 134. Phidippus multiformis.--Male enlarged six times.] The usual length is about a third of an inch in both sexes. The cephalothorax is nearly as broad as long, and the abdomen of the female as wide as the thorax and a little longer.