Spiders and Their Near Relatives 



Protolophus tuberculatus (P. tu-ber-cu-la'tus). — The cephalo- 

 thorax is gray, the dorsum of the abdomen darker, somewhat 

 reddish brown; there is a broad, darker, median strip, extending 

 from the anterior margin of the cephalothorax to the sixth ab- 

 dominal segment. The abdominal tubercles are unarmed. Oc- 

 curs in Texas and California. 



Protolophus singularis (P. sin-gu-la'ris). — This species is 

 similar to the preceding but differs in that the abdominal tubercles 

 bear from two to four spines. Occurs in California. 



Genus CADDO (Cad'do) 



The eye-tubercle is of enormous size, covering the greater 

 part of the cephalothorax (Fig. 56); it is wider than long, smooth, 



with a broad median furrow. The eyes 

 are very large and situated at each side 

 of the ocular tubercle. Only two species 

 are known. 



Caddo agilis (C. ag'i-lis). — This is 

 the larger of the two species, attaining 



Fig. 56. CADDO AGILIS , . , f • . u , t-m i 



s a length of one sixth inch. 1 he colour 



is brownish with a silvery white longitudinal 

 median band. The trochanter of the pedi- 

 palps is armed below with only scattered 

 stiff hairs. The femur of the pedipalps 

 is armed with three large spine-tipped 

 tubercles which are evenly spaced on the 

 basal half (Fig. 57a). 



This species has been found in New 

 York, District of Columbia, and Ontario. 



Caddo boopis (C. bo-o'pis). — The length 

 of the body is only about one twenty-fifth 

 of an inch. The color is dark brownish 

 without the white median band. The trochanter of the pedipalps 

 is armed beneath with a large tubercle bearing two spines, one 

 large and one small. The femur of the pedipalps bears three 

 large spines, two close together near the base and one near the 

 middle of the segment (Fig. 576). 



As yet this species has been found only at Ithaca, N. Y. 

 It was taken by Professor Crosby in sifting leaves on a heavily 

 wooded bank. 



68 



Fig. 57. TROCHANTER 



AND FEMUR OF THE 



PEDIPALP OF 



a, Caddo agilis b, Caddo 

 boopis 



