ARACHNIDES— ARANHIDES— OKBITELARIJE. 81 



of legs, 7.25'"" ; its coxa, 0.75"™ ; femur, 2""" ; tibia, O.^^""" ; first tarsal joint, 

 1 3™""; tarsus proper, 2.4'""' ; Ipngtli of fourth pair of legs, !».25"""; its coxa, 

 0.75'""'; fenuir, 2.75"""; tibia, l""'" ; first tarsal joint, 1.75""" ; tarsus proper, 



9 mm 



Named for tlie American arachnologist, the late Prof. N. M. Hentz. 



This species differs from T. guyoti in wanting any distinct demarkation • 

 (if the thoracic and cephalic portions of the corselet, in tlie spiny character 

 of the femora, and in the longer and more tapering legs. It is also smaller. 



Florissant. Seven <?, Nos. 1226, 1447, 3860, 6600, 8533 and 8635, 

 8689, 14982. 



4. Tethneus provectus. 



PI. 11, Fig. 21(5). 



Four specimens, one of them in duplicate and all of them tolerably 

 preserved, represent both sexes of this species. Cephalotliorax of female 

 (that of the male too vague for determination of form) rounded subquadrate, 

 broadest and subangulated behind the middle, the rapidly narrowing front 

 almost straight anteriorly, and scarcely more than one-fourth the width of 

 tlie posterioi- portion ; cephalic separated from the thoracic portion of the 

 corselet by a rectangular incision and by the slightly concave curve of the 

 sides of the anterior half; the cephalic is also distinctly darker than the 

 thoracic region. Nothing can be said of the eyes. The last palpal joint of 

 the male is large, rounded quadrate, about twice as long jis broad ; tlie palpi 

 of the female are as stout as the base of the front tarsi, hairy, tapering only 

 on the apical half of the terminal joint, rather bluntly pointed, extending 

 nearly as far Ijevond the front as the whole length of the cephalothorax. 

 Abdomen as dark as the cephalic portion of the corselet, in the female 

 plump, rounded, slightly ovate, considerably larger than the cephalothorax, 

 the apex almost angulated ; in the male rounded subfusiform, much longer 

 than the cephalothorax, but not greatly broader. Legs very hairy but 

 without conspicuous spines, the femora very stout, and at the tip rapidl}' 

 tapering, the rest of the legs diminishing in size less noticeably than in the 

 preceding species. 



Length of body, 6.5"'"' ; of cephalothorax, 3""" ; of abdomen, 3.5""" ; 

 breadth of cephalothorax, 2.8°""; of abdomen, 3.1'°"'; extension of palpi 



VOL XIII 6 



