66 Wisconsin Academy of Sciences, Arts and Letters. 



i 



coxffi separated ( ^ ) by scarcely width of labiura, {$) hj more than 

 width of labium. Legs of the first and second pairs stoutest; femoral, 

 patellary, tibial and metatarsal spines on the four pairs; S with 

 spines on trochanters; metatarsi of the fourth spined throughout their 

 length. 

 Coloration: $ . Cephalothorax covered ^^ith dark but highly iridescent 

 scales; under alcohol two whitish testaceous spots aj^pear just behind 

 dorsal eyes; lower margin black; some upright black hairs on ante- 

 rior part of eye region. Abdomen bright iridescent red, lighter 

 around margin, purplish on dorsum, four indented dots near base, 

 and sometimes a whitish basal band; whole abdomen covered with 

 sparse black hairs; spinnerets black; under alcohol the base and a 

 curved oblique band on each side appear black, and the dorsum 

 dark iridescent green with a short longitudinal red band, narrowest 

 in the middle. Clypeus iridescent; falces dark reddish brown with 

 long white hairs on their inner edges; m axillae white at extremities 

 and on inner edges, otherwise reddish ; labium reddish tipped with 

 white; sternum testaceous, darker than coxse, with white hairs; 

 coxae covered with white hairs; palpi and legs ahnost black; venter 

 iridescent red with two indistinct darker longitudinal bands. $ . 

 Cephalothorax rufus, or more rarely black in the eye region, with a 

 transverse black band between the dorsal eyes; posterior to this is a 

 scalloped white or rufus band which curves forward in the middle; 

 behind the scalloped band the thoracic part is black; the sides are 

 black above, and white below; the margin has a narrow black line 

 between two white lines. Abdomen velvety black, with basal, cen- 

 tral, and lateral white bands, which are sometimes tinted with 

 salmon-color. Clypeus covered with white hairs; falces reddish, 

 with white hairs on anterior face; maxillse and labium brown; palpi 

 and legs varied with rufus and black, with white hairs; venter cov- 

 ered with whitish and rufus hairs. 

 Count Keyserling has kindly sent us a specimen of his Pellenes nigroceps 

 which we find to be identical with H. splendens. The female of this 

 species is extremely variable, especially in the abdominal markings. 

 Habitat: Wisconsin, Massachusetts. 



HABROCESTUM OREGONENSE Nov. Sp. 



Plate V, figures 49, 49a. 



5. Total length 5.8 mm. "Width of abdomen 1.9 mm. 



Cephalothorax: length 2.5; width 1.6; height 1. 



Legs 5, 3.8, 6, 5.5; patella and tibia of the first, 2.3; patella and tibia of the 



third, 2.5; patella and tibia of the fourth, 2; metatarsus and tarsus of 



of the fourth, 2. 



% 



