188 ARANEIDEA. 
aa. Palpal spine of male originating from the apex of the bulb, 
usually slender, more or less circularly or spirally curved, 
less frequently shorter and stouter. 
1. Mandibles normal in the male sex . . . . . . - ~~ Supusa, Peckh. 
2. Mandibles very much developed . .. . .- : Pensacoxa, Peckh. 
6b. Palpal spine of male originating from the inner nde of the 
apical half of the bulb, or from the apex of the inner lobe of 
the bulb, the spine itself being longer or shorter, sometimes 
slender, often stouter, and occasionally bifid. 
a*. Palpal spine very fine, aculeate . . . . . . . . . COLONUS, gen. nov. 
6*. Palpal spine stouter . . . - ; . . ., Cyrene, Peckh. 
6. Tarsus of male palpus not elongate, but broad at t the base, more 
or less circular, with the bulb also circular. 
1. Spine of palpal bulb single, springing from the apex of the 
inner side. Patella iii. not developed at the apex . . . . THorMss, gen. nov. 
2. Spine of palpal bulb double; two distinct spines springing 
usually from the outer side, often widely separate, the inner one 
sometimes geniculate, the outer one usually the longest, more 
or less encircling the bulb. Patella iii. more or less developed 
at the apex. Vulva of female always with a deep, short, 
transverse cavity about the middle, the upper margin forming 
achitinousrim . . . .. .. .. =... . . . Hasronartvs, gen. nov. 
Nots.—The genus Pardessus has not been included in this Table because the females alone are known to me. 
COBANUS, nom. nov. 
Helorus, Peckham, Proc. Nat. Hist. Soc. Wisc. iii. 1, p. 28 (April 1896) (nomen przocce.*). 
Type H. mandibularis, Peckham. Central America. 
Male. Anterior row of eyes slightly recurved. Centrals three times at least the diameter of the laterals. 
Clypeus not more than one-fourth the diameter of an anterior central eye. Cephalic quadrangle broader 
than long, slightly wider in front. Small dorsal eyes midway between the lateral eyes of both rows 
(or, if anything, rather nearer to the posterior lateral eyes), Posterior laterals slightly larger than 
the anterior laterals. Sternum a little longer than broad, rather broader behind. Legs 1, 3, 4, 2. 
Coxa i. long, one-third longer than coxa ii. and more than one diameter of the segment apart at the base. 
Protarsi i. and ii. with 2—2—2 spines beneath and 2 small apical lateral spines. ‘Tibie i. and ii. with 
2—2—2—2 spines beneath and 1—1 lateral spines on the inner side. Patellw i. with one small spine on 
the inner side, ii., iii., and iv. with one on each side. Protarsi iii. and iv. with three distinct rings of 
- spines—basal, central, and apical. Tibie iii. and iv. with, besides lateral spines, a single minute, basal, 
dorsal spine. Labium scarcely longer than broad. Maxille long, rounded at the apex, and somewhat 
dilate laterally. Posterior spinners very slightly longer and more slender than the anterior pair. 
Mandibles either very long and divergent, or quite short, as in the females. Teeth 2—2 on the upper and 
lower margins of the fang-groove, widely separate when the mandible is elongated. Fang long or short 
according to the development of the basal segment, sometimes with an inner basal tooth. 
Female. Characters as in the male, except that the coxe of legs i, ii., iii., and iv. are subsimilar, those of iv. 
the longest. Sometimes a lateral spine outside tibie i. and ii. Patella i., ii., iii., and iv. with one spine 
on each side. Femur of palpus with 1—1 dorsal spines. Mandibles with 2—2 apical teeth on the 
upper and lower margins. 
* Latreille, Hist. Nat. Crust. et Ins, ili, p. 309 (1802) (Hymenoptera). 
