41 



aquatic insects. A female of Dolomedes was twice found on 

 high bushes by my friend, T. W. Harris, in Milton, 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. Supplement.] 



8. Dolomedes sexpunctatus. 

 PI. 6, figs. 5, 6. 



Description. Greenish ; cephalothorax with a blackish mar- 

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

 disc blackish-green, with a longitudinal paler line 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 

 [l92] cinereous; tropin and first joints of feet pale testaceous 

 underneath ; thighs unspotted apple green, the other joints 

 gradually deeper towards the tip. 



Observation*. 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 Februaiy 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 



