OF WASHINGTON. 29 



to present in the near future a complete classification -of the 

 exotic Araneae, which, no doubt, will be of the greatest useful 

 ness for the study of the North American fauna. 



In order that some of the new forms in our fauna, which 

 have accumulated in my collection, can be referred to by 

 the student of general classification of spiders, I present here 

 with the descriptions and illustrations of three new genera, 

 whose affinity and relationship have remained obscure to me, 

 and also avail -myself of this opportunity to add descriptions 

 of some other new genera, which I have had no difficulty in 

 placing systematically, but which I deemed interesting enough 

 to be put on record. 



Homalonyclms, nov. genus. 



Cephalothorax nearly as broad as long, flat ; pars cephal. not 

 higher than thorax, narrow and pointed anteriorly ; clypeus less than 

 one-half as broad as the width of pars thorac., high and perpendicu 

 lar ; pars thorac. nearly circular, with a long and distinct median 

 fissure. 



Eyes eight in two rows. Anterior row straight, short, M. E. nearly twice 

 as large as the I,. E. of this row, as large as those of the posterior row, and 

 about their diameter apart from each other, while the I,. E. are closer to 

 them. Space between anterior row and margin of clypeus about five 

 times as large as the diameter of the A. M. E. Posterior row very much 

 recurved, eyes of equal size, space between p. M. E. larger than that be 

 tween them and the P. I,. E. 



Mandibles cylindrical, attenuated at tip, of medium size and slightly 

 pointed backward, more slender than femur I, parallel and contiguous 

 throughout ; claw small and weak. 



Maxillcs longer than broad, strongly inclined over labium, outer 

 side straight, inner side emarginate to fit around the tip, in front 

 squarely truncate, nearly meeting in front of labium. 



Labium two-thirds the length of the maxillae, longer than broad, sub- 

 ovate, rounded at tip. 



Sternum arched, circular, with impressions opposite the coxae, and 

 drawn out between coxae IV. 



Palpal claw toothless, long and curved. 



Legs stout, rather long ; the fourth pair the longest, the first nearly 

 as long : 4. i. 2. 3 ; femora somewhat inflated at bise. Tarsi with two 

 long, slender, smooth daws without teeth ; hypopodium of dense, fine, 

 short, not clavate hairs. Metatarsi and tarsi of all legs with scopula, the 

 terminal spines of the scopula long and projecting over the hypo- 

 podium. 



Abdomen rhomboid, truncate at base, flat at dorsum, terminating in 

 the spinnerets. 



