98 PECKHAM. [Vol. 2, 



eyes are larger than the lateral. The falces are rather long and 

 stout. The fangs are stout. The maxillse and labium are long. 

 This genus is founded on Salticus sumptuosus Perty 

 (Attus sumptuosus Walck. and Thiania sumptuosa C. Koch). 

 It is related to Bavia and Epinga, but has the sides of the 

 cephalothorax more nearly parallel and the middle eyes of the 

 first row larger and more prominent. Its long, rather narrow 

 body and enlarged first legs give it, to some extent, a resem- 

 blance to certain species of Hyctia, but it is not so slender, and 

 the middle eyes are larger than the lateral. 



DEZA SUMPTUOSA PERTY. 



Plate IX., Figs. 3— Sc. 



$ . Length, 11. Length of cephalothorax, 5 ; width of 



cephalothorax, 2.5. 

 9 . Length, 11.5. Length of cephalothorax, 4 ; width 



of cephalothorax, 2.7. 

 Relative length of legs, of female, 1423 ; of male, 1423 ; first 



pair stoutest, especially in the female. 

 The coloration exceeds in brilliancy that of any other 

 species in this group. In the male the cephalothorax has for a 

 ground color a covering of highly iridescent purple scales, 

 on which is an elaborate pattern in iridescent silvery scales, 

 with a prevailing tint of exquisite light green. This pattern, 

 which will be best imderstood by a reference to the figure, con- 

 sists of a large central spot just above the anterior eyes, which 

 is connected on each side with a spot between the second and 

 third rows of eyes ; of a curved band behind each dorsal eye ; 

 and of a band which encircles the cephalothorax, beginning on 

 the face at each side of the anterior middle eyes. These sil- 

 very scales, which in some lights show reflections of pink, blue 

 and violet as well as of green, are found also on the front face 

 of the falces, on the palpi and on the first pair of legs, which 

 are darker in color than the other pairs. The abdomen has 

 four transverse bands of these scales, which here, however, have 

 rather a golden than a silvery tinge, alternating Avith four 



