262 CLARENCE M. WEED. 



B.— Maxillary lobes of second pair of legs forming elongated triangles, quite 

 large at the base, then gradually retracted, not impressed, with anterior 



border straight: claw of palpus not denticulate Wlitopus. 



II.— First joint of mandibles without tooth Phalangiiiin. 



LilOBUMUJI C. Koch. 1839. 



This genus is defined by Simon* pnictically as follows : Teguments 

 soft or subeoriaceous. Strise of the cephalothorax and of the three 

 last abdominal .segments very distinct; those of the anterior seg- 

 ments scarcely or not at all distinct (especially in the Z ). Anterior 

 and lateral borders of the cephalothorax smooth. Eye eminence 

 rehitively small ; smooth, or rarely provided with small, slightly dis- 

 tinct tubercles ; widely separated from the cephalic border. Lateral 

 pores small, oval, and marginal. Anal piece large, transverse-oval 

 or semi-circular, much wider than long, and much wider than the 

 reflected borders of the eighth segment. Mandibles short, similar in 

 the two sexes ; first joint furnished at the base below with an acute 

 tooth. Palpi simple; femur, patella and tibia without any process 

 and without i)rojecting angles; maxillary lobe provided at the liase 

 with two strong, conical teeth. Maxillary lobe of the second pair 

 of feet very long, nearly straight from the base, not attenuated, di- 

 rected mesad nearly horizontally, and united on the ventro-meson 

 to the lobe from the opposite side without forming a sensible angle ; 

 the two together lightly arched on the cephalic border, and forming 

 an even curve. Sternal piece large, slightly contracted between 

 the fourth pair of coxse, gradually enlarging and obtusely truncate 

 cephalad. Feet very long and slender; tibia of the second ])air 

 with a few false articulations. Palpal claw denticulate. 



Four species of this genus have been taken in New Hampsiiire. 

 They may be separated by the following key, which applies more 

 particularly to the males than to the females. 



A distinct, black, longitudinal stripe on dorsum vittatlim dorsallliil. 



Dorsum without black stripe. 



Dorsum and legs, including trochanters, cinnamon-brown. ...veiltricosii in. 

 Dorsum brown, legs black. 



Legs very long, a white ring near middle of second pair loii|s;i|>OS. 



Legs shorter, black throughout politiiin. 



* Arachn. de France vii, p. 172. 



