OF WASHINGTON. 45 



The color is nearly white, and only slightly darker in eye region, not 

 extending back on cephalothorax as in fissiceps. 



Femur of male palpus long and very narrow, not enlarged at distal end. 

 Palpal organ much as in fissiceps, but proportionally smaller. 



Locality : District of Columbia ; August. 



Erigone (Ceratinella) alticeps, n. sp. 



(J 1 Head abruptly raised from thoracic portion ; groove between 

 median eyes reduced to a nearly horizontal fold, thus bringing the p. M. 

 E, nearly vertically over A. M. E. 



Tibia of male palpus short and rather broad. Tarsal hook short, 

 broad, bent nearly at right angles at its end', with a prominent tooth at 

 about its middle. Palpal organ as in fissiceps. 



Color, orange. Length, 1.5 mm. 



Locality : District of Columbia ; April. Three males. 



Brigone (Ceratinella} melanocnemis, n. sp. 



<$ Head as in emertonii, but p. M. E. less than diameter apart (more 

 than diameter in emertonii}. 



Palpus much smaller than in emertonii. Tarsal hook, seen from 

 above, extremely narrow ; from the side, broad, bent at right angles at 

 tip, with prominent tooth. Tube of palpus small, and without the long 

 curved process of emertonii. 



9 Much like fissiceps, but epigynum with a broad plate in center, with 

 openings on each side. 



Color, orange ; tibia of fourth legs much darker than other joints. 

 Length, 1.5 mm. 



Locality : District of Columbia ; May and October. 



Ifrigone (Ceratinella} parvula, n. sp. 



$ Size, i mm. Head rounded and elevated. .Cephalothorax falls off 

 abruptly at posterior half. Abdomen with dorsal and anterior shield, 

 the latter almost entirely above pedicle of body. 



Palpus, patella as broad as long ; tibia broader than long, with tooth 

 in center and short process at outer side. Palpal organ simple, tube 

 coiled upon itself at the end. 



Colors, soft parts gray, hard parts dark brown ; legs, yellowish brown. 



Locality : Hollis, N. H. ; August. 



Erigone (Ceratinella) tibialis, n. sp. 



$ Resembles C. minuta, but differs markedly in the palpus and size. 

 Head narrow, raised ; eyes equal, much more than diameter apart. 



Tarsal hook very long, strongly curved, with strong tooth at its first 

 third. Palpal organ resembles fissiceps. 



Color, red-brown, darker around eyes. Legs, light yellow. Size, i.5mm. 



Locality : District of Columbia ; March. 



