286 Wisconsin Academy of Sciences^ Arts and Letters. 



CephalotJiorax high; cephalic and thoracic parts of the same length; the 

 latter very much inclined, contracted, truncated, or slightly hol- 

 lowed. 



Eyes: those of the face but little separated, forming a straight line. Dorsal 

 eyes a little smaller than the lateral, not prominent, situated at the 

 widest point of the cephalothorax, further apart than the lateral 

 since the sides of the quadrangle diverge behind. ' 



Clypeus almost half as wide as the middle eyes, with thick hairs. 



Sternum oval, of the same width as the intermediate thigiis. 



Legs 3, 1, 4, 2, or 1, 3, 4, 2; first; pair much more robust, with the femur 

 compressed, dilated above, and claviform; patella and tibia of the 

 first thick and cylin(?rical. Tibia and patella of the third much 

 longer than tibia and patella of the fourth; metatarsus i^nd tarsus 

 of the fourth as long or scarcely shorter than the tibia and patella. 

 Tibial and metatarsal spines on the four pairs; the metatarsus of the 

 fourth having only a circle of terminal spines. 



Falces vertical, not long. 



CmiS C. Koch. 1848. 



■Syn.: 1848. Ciris C. Koch. Die Arachn., 14, p. 85. 



1850. " Id., Uebers. d. Arachn. Syst., 5, p. 69. 



1877. " Thorell, Studi Ragui Malesi e Papuani, I, p. 283 



Cephalothorax short, flat above, scarcely longer than it is wide. 



Eyes of the face in a straight row. 



Falces strong, thick, not long, wrinkled, shining, vertical. 



Palpus of the f >. male of not unusual form, the tarsus tapering oval. 



Legs short, nearly equally long, 



Abdomen very short, almost circular. 



Spinnerets drawn in and scarcely visible. 



Thorell remarks that Ciris is near to Ballus (C. Koch) and more espe- 

 cially to Neera Simon, in that the eye area is large, occupying one half the 

 cephalothorax; while it differs from Neera in having the quadrangle of 

 the eyes not wider, but a little narrower behind than in front, and the 

 third pair of legs only a little longer than the fourth. Stuii Ragni Malesi 

 € Papuani, I, p. 285. 



BALLUS (C. Koch). 1850. Simon. 



Syn.: 1837. Euoplirys C. Koch, Uebers, d. Arachn. Syst., I, p. 33 {ad 

 partem. 

 1846. Marpissa Id., Die Arachn. XIII, p. 53 {ad partem). 

 1850. Attus: sub. -gen. Ballus Id., Ueberj'. d. Arachn. Syst., 5 p. 68. 



1869. " Sim., Monogr. d. Attid., p. 6 (16) 14 (24) {ad partem). 



1870. Ballus Thorell, On Europ. Spid., I, p. 212. 



