428 



AEACHNIDA 



Fig. 672 



Tmarus caudatua 

 (Emerton). 



1. TMARTTS Simon. Front of head truncate; hinder row of eyes 

 much longer than the forward; lateral eye on each side being raised on 

 tubercles, the hinder tubercle on each side being much larger than the 

 forward one; abdomen high and pointed behind: 5 American species. 

 T. caudatus (Hentz) (Fig. 672). Length 6 mm.; color mottled 

 gray; abdomen highest at hinder end, which forms 

 a conical knob: on trees and fences; common. 



2. MlSUMENA Latreille. Large, brightly colored 

 or white spiders living in flowers, the colors of 

 which they often mimic; the 2 lateral eyes on each 

 side on a single tubercle : about 20 American species. 

 M. vatia Thorell. Length 12 mm.; color white 

 or yellow, sometimes with a crimson spot on each 

 side of the abdomen and another between the eyes; 

 sides of thorax yellowish : common. 



M. asperata (Hentz). Length 6 mm.; color pale yellow or white, 

 with dull red markings on the abdomen and a brown stripe on each side 

 of the thorax; scattered stiff hairs present; common. 



3. XYSTICUS Koch. Each lateral eye on a tu- 

 bercle, the forward one being the larger ; median ocular 

 area as wide or wider in front than behind : 40 Ameri- 

 can species, which live under bark, stones, and leaves. 



X. triguttatus Keyserling. Length 5 mm. ; females 

 straw-colored or yellow, with black spots on the 

 thorax and front of the abdomen and 3 broken trans- 

 verse stripes behind; male with a thorax which is dark 

 brown at the sides and lighter in the middle, and an 

 abdomen banded with black and white: very common 

 in grass and low bushes. 



X. versicolor (Keyserling) (Fig. 673), Length 7 

 mm.; body flattened, mottled black and gray in color: 

 common on trees, fences, etc. 



4. PHILODROMUS Walckenaer. Abdomen bluntly 

 pointed behind and flat; legs long, the second pair 

 being the longest; labium much longer than wide: 24 

 American species. 



P. vulgaris (Hentz) (Fig. 674). Length 6 mm. 

 spreading an inch or more; color mottled gray with a median marking 

 on the abdomen: on fences and walls. 



5. EBO Keyserling. Labium not longer than wide; second pair of 

 legs twice as long as any of the others; median eyes larger than the 

 lateral ones; hinder row nearly straight: 3 American species. 



Fig. 673 



Fig. 674 



Fig. 673 Xys- 

 ticus versicolor 

 (Emerton). Fig. 

 674 Philodro- 

 mus vulgaris 

 (Emerton). 



legs very long, 



