Dec, I9I4-] Petrunkevitch : Attid^ of Yale Expedition. 329 



ATTID^ OF THE YALE DOMINICA EXPEDITION. 



By Alexander Petrunkevitch, 

 New Haven, Conn. 



Among the spiders collected by Professor H. W. Foote in Domi- 

 nica were several jumping spiders which he sent for identification to 

 Mr. G. W. Peckham. Mr. Peckham had identified them and found 

 four new species when his work was cut short by death. Professor 

 Foote then placed the specimens in my hands for description. In 

 accordance with the desire of Mrs. Peckham, who was kind enough 

 to defray the expenses of the drawings, these were made by Mr. J. H. 

 Emerton. 



1. Commons enoplognatha Simon, 1902, Ann. Soc. Entom. Belgique, Vol. 



XLVI, p. 3S2. Hist. Nat. Araignees, 1903, Vol. II, p. 780, fig. 935. Plate 



XII, figs. 1-3. 



Male. — Total length 6.8. Cephalothorax 3.0 long, 2.4 wide. Quadrangle 

 much wider than long, slightly narrower behind than in front. Eyes of second 

 row minute, situated half way between the ASE and PSE. Cephalic part 

 shorter than thoracic. First femur considerably thickened. A brush of long 

 black hair on the underside of femur, patella and tibia of first leg. A tuft 

 of white hair on the inside of first patella, close to base. Copu'atory appa- 

 ratus as figured. Femur of palp with white, the other segments with black 

 hair. Tibial, apophysis thin and rather long. Hair on cephalothorax of three 

 different colors, white, black and rusty brown. 



2. Sidusa dominicana new species. Plate XII, figs. 4-5. 



Female. — Total length 4.8. Cephalothorax 2.0 long, 1.8 wide. Quadrangle 

 slightly wider in front than behind. First row, viewed from in front slightly 

 curved upward. Side eyes equal in size, their diameter a trifle longer than 

 half the diameter of AME. Eyes of second row midway between ASE and 

 TSE. Sternum oval, anterior coxae separated by the width of the lip, which 

 is as wide as long. Legs 4312. Tibia of first and second leg with t,-}, long 

 spines below and laterals ; metatarsus with 2-2 below and laterals. Cephalo- 

 thorax dark brown with a median yellow band extending from the anterior 

 €nd of dorsal groove to posterior edge of cephalothorax. Side edges of cepha- 

 lothorax black with a submarginal yellow band. Dorsal surface of abdomen 

 yellow with two brown bands spotted with yellow. Legs yellow, with dark 

 spots on femora, tibiae and metatarsi. Epigynum as figured. 



