264 Journal New York Entomological Society. I"^'"'- >^-'^ii. 



behind. The legs are pale without markings, and the palpi are pale except 

 the tarsus. The tarsus and palpal organ are large, thickened at the base anil 

 pointed at the end. The tarsal hook is turned outward with a notch near tlu 

 end, and has the general shape of the hook in Tiiieticiis terrestris. The man- 

 dibles are turned outward at the ends with a small tooth opposite the end of 

 the closed claw. 



Ithaca. X. V.. December, 191 1, C. R. Crosby. 



Linyphia cayuga new species. 



Both sexes, 3 mm. long. Cephalothorax longer than wide, the head elon- 

 gated in both sexes. The color of the cephalothorax and legs is dull yellow 

 in the female and orange in the male with the ends of the joints a little dark- 

 ened. The cephalothorax has three gray longitudinal stripes in both sexes, 

 the lateral stripes more or less broken into four spots. The abdomen of tlu- 

 male is dark gray with a trace of light spots on the dorsal side near the front 

 end. The abdomen of the female is dark underneath, with a few irregular 

 small light spots. On the back it has a dark and light pattern shown in 

 Fig. 7. The epigynum is covered by a wide smooth plate, behind which are 

 two shallow openings separated by a short middle lobe. In the male the man- 

 dibles are two thirds as long as the cephalothorax. The male palpi resemble 

 those of L. mandibulata. the large appendage of the base of the palpal organ 

 is as long as the tarsus and deeply notched at the distal end. The tube is 

 long and coiled in one and a half turns. The young of both sexes are colored 

 like the female with all the markings less distinct. 



IMarsh at the head of Cayuga Lake, Ithaca, X. Y. Adults in May, 

 and young in December. 



EXPL.\NATI0X OF PL.^TE VIII. 



Fig. I. Enoplognatha pallida, mandibles and front row of eyes, id, 

 head and eyes turned up at an angle of forty-five degrees. \b, epigynum. 



Fig. 2. Pedanostethus terrestris, right palpus of male, showing notcli 

 and pair of hairs on the outer side. 2a. inner side of same palpus, 2b. inni r 

 side of palpus of male Pedanostethus ripariiis for comparison. 



Fig. 3. Gongylidiiim oruatns, back of male showing color areas and orna- 

 mentation of mandibles. 3(1, epigynum. 3b, palpus of male. 



Fig. 4. Gongylidiiim undulatus. palpus of male. 



Fig. 5. Tmeticus conictis, head of male. 5(1. mandible. 5b, male palpus 

 from above showing spread of the tarsal hook, sr, tarsus and palpal organ 

 from inner side, srf, outer side of palpal organ. $e. tarsal hook. 



Fig. 6. Tmeticus index, eyes and palpus of male from above. 6(7, outrr 

 side of male palpus. 



Fig. 7. Linyphia cayuga. dorsal markings of female, ya, cephalothorax 

 and iialpus of male, 7b. male palpus from below, -c. epigynum. 



