10 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.63. 



tooth at distal end, a larger one a little proximad of this, and these 

 followed proximad at an interval by a still longer tooth, proximad of 

 which is a series of four well-spaced smaller, and paler teeth. The 

 lower margin of furrow with a stout dark tooth at distal end having 

 on ectal side its base a smaller blunt or somewhat nodular tooth; 

 proximad of this a series of 10 or 11 teeth, of which the most proximal 

 are much reduced in size. See further, Plate 2, figure 14. 



The palpal organ as shown in Plate 2, figure 15. 



Length of female, 9.2 mm. ; abdomen, 8 mm. ; chelicerae 2.5 mm. ; 

 tibia and patella I, 9.4 mm. ; tibia and patella IV, 4.5 mm. 



Length of male, 7.5 mm. ; tibia and patella I, 9.8 mm. 



Locality. — China: Kuliang (N. Gist Gee). One male, one female. 



Type.—Cdit No. 865, U.S.N.M. 



TETRAGNATHA SOCIELLA. new species. 



Plate 3, fig. 17. 



Female. — Carapace somewhat darker than in the preceding species, 

 with a dark Y-shaped mark formed by lines along side of pars 

 cephalica, uniting at middle line of pars thoracica. Legs testaceous, 

 joints darkened at distal ends, but with a band at the extreme end 

 lighter. Abdomen with the usual dark lines above. Dorsum on each 

 side limited by a wavy dark line separating off a narrow and corre- 

 spondingly wavy light stripe on each side, the sides below this dark. 

 Venter paler than sides, but somewhat dusky, with a clearer line on 

 each side. 



Area of median eyes narrower in front than behind. The lateral 

 eyes on each side more widely separated from each other than are the 

 corresponding medians. 



The mandibles differ conspicuously from those of conformanfi and 

 the species hereafter described in having an angular projection, or 

 tooth, on the distal surface of the fang near its base, much as in 

 T. praedonia Koch. On the ventral side at distal end two stout teeth, 

 of which the proximal is the smaller. Proximad of these teeth on 

 lower margin of furrow a tooth with characteristic dark body on 

 distal side of base, from which it appears to arise. Proximad of this 

 tooth seven others decreasing in size proximad. At distal end above 

 a stout dark tooth with a minute one ectad of it. Along dorsal edge 

 of furrow proximad of this a series of six teeth of which the second 

 is the largest, the others decreasing gradually proximad from this. 

 See Plate 3, figure 17. 



The epigynum is very similar to that of T. squamata Karsch (pi. 3, 

 fig. 17). 



Length, 10.5 mm.; cephalothorax, 3.1 mm.; chelicerae, 2.9 mm., 

 being proportionately shorter than in the preceding species; tibia and 

 patella I, 10 mm. ; tibia and patella IV, 5 mm. 



