54 PECKHAM. [Vol. 3. 



into four pairs of large dark spots. The first pair of these 

 spots (or the corresponding parts of the bands) have on their 

 inner side a small white spot; the space between the second 

 pair is filled in with a large white spot ; on the posterior half 

 of the dorsum are three pairs of short transverse white bars, 

 which separate the second and third and third and fourth pairs 

 of dark spots, and outline the posterior end of the fourth 

 pair. All over the rest of the dorsum, around and between 

 the spots and bands, the abdomen seems to have been covered 

 with beautiful iridescent scales with light green and red reflec- 

 tions. Of these, only patches are left in our specimens. The 

 legs are brown barred with black, those of the first pair being 

 much the darkest. They have a thin covering of short dark 

 hairs, and a good many close white scales. The palpus has 

 long dark hairs on the tarsus and white scales on the other 

 joints. The falces are bronze brown and slightly iridescent. 



The coloring of the female is essentially like that of the 

 male. The cephalothorax is covered, except the marginal 

 black line, with white hairs, having no yellow around the eyes. 

 The abdomen lias the encircling white band broken into 

 oblique bars on the sides ; and the dark bands are more com- 

 monly broken into distinct parts. There are long white hairs 

 on the palpus. 



We have numerous specimens, both of males and females, 

 from Guatemala. 



NAGAINA, GEN. NOV. 



The cephalothorax is only moderately high. The upper 

 surface is gently convex from the second row of eyes through 

 two-thirds of the thoracic part, the inclination in front of and 

 behind the dorsal eyes being about the same. The anterior 

 end of the cephalic part is more distinctly inclined, and the 

 posterior end of the thoracic falls abruptly. The sides are 

 contracted in front and behind, the widest point being just back 

 of the dorsal eyes; they are vertical in front and nearly so 

 behind. 



