chamberlin: the arachnida. 191 



COSMETIDAE. 



Paravanones peruvianus, sp. nov. 



Pl'ate 2, fig. 1-6. 



General background of body a dilute ferruginous. Carapace 

 dusky from a close network of black lines, the color less dusky in a 

 deltoid area back of eye-tubercle with apex caudad and embracing 

 two short black stripes, one caudad of each eye, in a narrow mid- 

 longitudinal line, and along the transverse sutures and in a broader 

 area along each side of the carapace, tubercles pale. Ventral surface 

 of cephalothorax and coxae paler, a clearer light ferruginous; under 

 lens seen to be covered with a less dense network of dark lines. Ab- 

 dominal segments both above and below black or nearly so, a line 

 back of each segment white. Legs also with an inconspicuous net- 

 work of fine dark lines; femora, patellae, and tibiae dark at distal ends 

 and tarsus of leg I also blackish. 



Carapace widest at level of third sulcus, convexly rounded, abruptly 

 narrowed a little in front of caudal end and at level of caudal edge of 

 third legs in front of which the sides converge but moderately, the 

 anterior corners more oblique. 



Carapace crossed by five transverse furrows which are wide, not 

 suture like, and of which the first is bent back angularly at the middle. 

 Eye-tubercle much wider than long, concavely depressed from ends 

 toward middle; a series of four tubercles in a curved line on each 

 elevated end subparallel with edge of ocellus and several weaker 

 tubercles immediately mesad of these; the median portion of eye- 

 tubercle smooth. Anterior margin not elevated or only obscurely 

 so on each side, the median portion between eye-tubercle and front 

 margin broadly elevated. At each anterolateral corner a prominent 

 process, (Plate 2, fig. 3), the border near level of anterior edge of second 

 coxae with a process projecting caudoventrad and meeting a process 

 from second coxae. Edges of carapace in its widest part with a 

 number of rather low conical tubercles, the tubercles across caudal 

 border more numerous and with two much larger subcylindrical 

 processes near middle; the more anterior lateral margins essentially 

 smooth. On areas between furrows a limited number of tubercles 

 which are larger and somewhat more numerous in caudal than in 

 anterior region, and in each area a pair of tubercles which are higher 



