ARACHNIDES— ARANEIDES— SALT1GRADJ3. 55 



each other, the whole arranged in a shghtly curving row opening- forward; 

 eyes of second row indistinguishable; those of third row rounded oval, 

 obliquely placed, situated each in the center of either lateral half of the 

 cephalothorax. Abdomen slightly longer than the cephalothorax, of the 

 same width, with nearly straight sides, rounded off anteriorly and tapering 

 to a subangulate apex on the posterior third or fourth. The cephalothorax 

 IS blackish in the middle posteriorly, and all the abdomen but the terminal 

 tapering part is nearly black. Legs very poorly and imperfectly preserved, 

 but evidently tolerably stout and furnished w'th abundant, divergent, taper- 

 ing, slender spines. 



Lengthof body, 6.65"°'; cephalothorax, 3"™ ; abdomen, 3.65'""; breadth 

 ofcephalothorax anteriorly, 1.8°""; posteriorly, 2'"'°; abdomen, 1.5'"'"; length 

 of first pair of legs, l.b""^. 



The specimen is presumed to be a female from some faint traces of a 

 slender palpus. The squareness of the form distinguishes this from the pre- 

 ceding species; from P. latitatus it differs by its smaller size and propor- 

 tionally shorter cephalothorax as well as by the more rounded front of the 

 latter. 



Florissant. One ?, No. 12005. 



3. Parattus latitatus. 



Cephalothorax quadrate, nearly three times as long as broad, equal, 

 with straight and parallel sides, the extreme anterior and posterior angles 

 rounded off; front nearly straight between the rounded angles. Eyes of ante- 

 rior row large, equal, ciz'cular, subequidistant, the middle pair situated their 

 own diameter behind the front, the lateral ones at the front, forming thus a 

 curving series opening forward; eyes of second row not discernible in the 

 single specimen; those of third row also doubtful, bat apparently repre- 

 sented by a pair of spots considerably smaller than the anterior eyes, 

 slightly nearer together than the middle pair and situated a little in front 

 of the middle. Across the middle of the cephalothorax, or rather a little 

 behind it, is a straight, raised, black line, in front of which the cephalotho- 

 rax is black in a very large round patch. Abdomen almost globular, 

 shorter than the cephalothorax but much broader, covered profusely with 

 dusky and blackish hairs. Legs moderately slender and long, armed 

 sparsely with very long and slender tapering spines longer than the breadth 

 of the femora. 



