376 J. H. Emerton — Senders of the Family Thomisidm. 



down at the end. Fig. 2d. The inferior process is short and wide. 

 The tarsus is short and blunt. The tube is very short, not half the 

 length of the tarsus, and nearly straight. PI. xxxii, Hg. 2c. 

 Two males only, from Readville, Mass. 



Philodromus robustus, new sp. 



Plate XXXII, figures 1-1 a. 



Male, 4™™ long. Legs and palpi stouter and more hairy than in 

 the other species, and the mandibles longer. The specimen is much 

 faded and there are no traces of markings on the legs. The abdo- 

 men shows the usual markings and the cephalothorax had the middle 

 light colored with a dark line, widening toward the head. 



The palpi have the tibia longer than wide and about as long as 

 the patella. The outer process is slender and short, turned obliquely 

 outward and blunt at the tip. Fig. la. The under process is thin 

 but hard and as wide as long. The tarsus is as wide as long and the 

 palpal organ nearly round. The tube is slender and extends half 

 way around the bulb. 



Beverly, Mass. 



TmaruS E. Simon, 1864. 

 Cephalothorax widest across the middle, farther forward than in 

 most of the family. Front of the head and mandibles inclined far 

 enough forward to be seen from above. Lateral eyes of both rows 

 on large round tubercles. Middle eyes forming a quadrangle longer 

 than wide and widest behind. Abdomen longer than wide, widest 

 across the hinder half and high, and pointed behind with the point 

 in some species prolonged into a tubercule of various shapes. 



TmarUS CaudatUS Keys. = Tlwmisus cav.datus Hentz. 



Plate XXXII, figures 'i-id. 

 Female, 6'""^ long. Cephalothorax, 2"™ long and as wide at the 

 widest part. The abdomen is as narrow as the cephalothorax in 

 front and widens backward to nearly twice that width. Fig. 3. 

 The abdomen rises from the front to a point over the spinnerets, 

 where it forms a blunt conical point. Fig. 3a. The hrst and second 

 legs are nearly equal and much longer than the third and fourth. 

 The mandibles are inclined forward, their basal half is nearly 

 straight and the ends narrowed. The colors are gray and white, 

 resembling light individuals of Philodromus vulgaris. The legs are 



