41 



aquatic insects. A female of Dolomedes was twice found on 

 high bushes by my friend, T. W. Harris, in Mihon, Massachu- 

 setts, " on a large, irregular, loose, horizontal web, at one ex- 

 tremity of which was situated her follicle, or egg-bag, covered 

 with young. The parent appeared watching them at some 

 distance." This spider can dive and stay a considerable time 

 under water, to avoid its enemies. It was found in March, in 

 Alabama, under stones near a stream of water. 



Habitat. North and South Carolina, Massachusetts, Alabama. 



[Specimens from Alabama are larger than those from New 

 England. Sujjj^le^nent.'] 



8. Dolomedes sexpunctatus. 



PI. 6, figs. 5, 6. 



Deso'iption. Greenish ; cephalothorax with a blackish mar- 

 gin, a white line each side, terminating at the anterior angle, 

 disc blackish-green, with a longitudinal paler hue in the centre; 

 abdomen greenish-black, with four white dots near the base, 

 and four very minute ones nearer the apex. Male same color ; 

 cephalothorax pale blackish-green, a pale yellowish line each 

 side ; pectus pale, with six black dots ; abdomen greenish-black 

 above.^ with four black rings near the base, sides and venter 

 [192] cinereous; trophi and first joints of feet pale testaceous 

 underneath ; thighs unspotted apple green, the other joints 

 gradually deeper towards the tip. 



Observations. This species dwells on ponds, and dives with 

 great agility, hiding itself under floating leaves or rubbish when 

 pursued. 



Habitat. North Carolina. 



[PI. 18, fig. 55, eyes. Legs immaculate and hairy, arranged 

 4, 2, 1, 3. Taken February 28. Supplement.'] 



[?, length 11.6 mm.; cephalothorax 5.4 mm. ; legs 15, 15, 14.3, 16.7. 

 Abdomen whitish at the sides, and with two lines of white spots along 



