Spiders and Their Near Relatives 



perpendicular spines and with long, slender hairs, which in their 

 basal half stand at right angles to the leg, and in their distal 

 half are bent forward and are somewhat matted. It has been 

 found in Missouri and in North Carolina. 



Family TROGULIDiE (Tro-gu'li-dae) 



The Trogulidas differs from the Nemastomidae, with which 

 it is closely allied, in that the sternites of the abdomen, except 

 the genital and anal, are fused, do not overlap, and are marked 

 by a median longitudinal sulcus; and in that the first and second 

 abdominal sternites are widely rounded anteriorly and overlap 

 considerably the proximal extremities of the two posterior pairs 

 of coxae; and also in having the eighth or penultimate tergite 

 small and narrow, and not expanded laterally. The legs are 

 shorter and stouter than in the preceding family; and the cara- 

 pace bears a frontal process which conceals the cheliceras and 

 pedipalps. 



This family is represented in our fauna by only two genera, 

 both of which are restricted to the Pacific Slope. They are 

 separated as follows by Mr. Banks: 



A. Eye-tubercle projecting in the form of a spoon, two spines 

 at each side on the anterior margin. P. 79. 



Ortholasma 



AA. Eye-tubercle branched, a single club at each side on the 



anterior margin. P. 80. Dendrolasma 



Genus ORTHOLASMA (Or-tho-las'ma) 



The cephalothorax is armed with a pair of spines at each side 

 on the anterior margin. The eye-tubercle projects in front in 

 the form of an almost flat, gradually widening plate; the tip of 

 the eye-tubercle is rounded, with a more dense central rib and some 

 lateral ribs connected by a membrane. The eyes are but partly 

 visible from above. 



Only two species of these harvestmenare known; both of these 

 are from the Pacific Coast, and were described by Mr. Banks. 



Ortholasma pictipcs (O. pic'ti-pes). — The form of the body 

 of this remarkable harvestman is represented by Fig. 59; the legs 

 are long and slender, and are not represented in the figure in order 



79 



