ARTHROPODA OF THE COMMANDRR ISLANDS. 347. 



(2) GoniotauUus femoralis Klrby. Fauna Bor. Amer., p. 253. 



Two specimens, one from Bering Island, July-August, 1897 (Stejueger), and the 

 other from Copper Island, August, 1897 (Barrett-Hamilton). 



Besides the above there are three young forms — one of a Perlid, one of an 

 Ephemerid, and one of a Oaddice-fly ; none of these can be more definitely determined. 



ARACHNID A. 



(By Nathan Banks.) 



Order ARANEIDA. . 

 Family THEEIDID^. 



(1) Bathyphantes pogonias Kulozynski. Pajaki zebrane Ba Kamozatce, 1885, p. 32. 



Several specimens from Bering Island, July-August, 1897 (Mr. Barrett-Hamilton). 



(2) Batliypliantes arctiea Keyserling. Die Spinn. Amer. Therididae, II, p. 85. 



One specimen from Copper Island, August, 1897 (Mr. Barrett- Hamilton). 



(3) Microneta ululabilis Keyserling. 



Erigone ululaiilis Keys., Die Spinn. Amer. Therididae, II, p. 184. 

 Several specimens of both sexes from Copper Island, August, 1897 (Mr. Barrett- 

 Hamilton). 



(4) Gonghjdium borealis, new species. Plate A, fig. 1. 



Oephalothorax, mandibles, legs, and sternum pale yellowish brown, the mandibles 

 rather darker, and the sternum a little paler; abdomen whitish or pale gray above 

 and below, the epigynum reddish, legs rather darker at the tips. Cephalothorax 

 quite broad in front, highest a little behind the eyes; hind row procurved, the P. M. E. 

 small, more than their diameter apart, fully three times as far from the larger S. B. ; 

 A. M. E. small, scarcely their diameter apart, quadrangle of M. B. much higher thau 

 broad, wider above than below; mandibles quite long, sternum sub triangular, a little 

 longer than broad; legs moderately long and slender, with many hairs, and a few 

 scattered spines; abdomen about one and one-half times as long as broad, somewhat 

 truncate at base, blunt pointed at the tip; epigynum shows a transverse ridge, 

 broadly indented in the middle and showing basad each side a dark mark; male 

 palpus rather short, tibia simple, palpal organ not very large nor complicated, with 

 a dark curved hook at base, one end blunt, the other pointed, tip of bulb with a 

 whitish pointed sheath, finely rougheneil, and supporting the fine tip of the style. 

 Length, 2 mm. 



Type.— No. ^=054, U. S. N. M. 



Two specimens, male and female, from Copper Island, August, 1897 (Mr. Barrett- 

 Hamilton). 



(5) Erigone sp. 



Two specimens, females, from Bering Island, July-August, 1897 (Mr. Barrett- 

 Hamilton). Quite small and black, except pale legs and palpi. Possibly they belong 

 to some species described only from the male. 



(6) Erigone sp. 



One specimen, female, from Bering Island, July-August, 1897 (Mr. Barrett- 

 Hamilton). Dark, except pale legs. 



