630 Theophilüs S. Painter, 



P a 1 p s. 



Tufted Males. The color of the palps, seen from the front, 

 is an intense black in all of tlie cases examin ed. On the inner side, 

 particularly at the base of the joints of the appendage, yellow hairs 

 maj^ be present. In one case, a trifle of this lighter color was seen 

 from the front. 



Gray Males. The palps of the gray males are a bright orange 

 coior. This was found to be invariably true, even for the very dark 

 males. On the inner side there is a small amount of pigment on 

 the basal joints (Fig. A8). 



Tufts of Hairs. 



Tufted Males. The tufts of hairs, so characteristic for the 

 males of this class, show some Variation in the degree of develop- 

 ment, but the position of these tufts is flxed and subject to slight 

 or no variations. The degree of development of the individual tufts 

 of hairs varied, though in most cases all three tufts were fully 

 developed. Fig. AI shows a typical case, and Fig. A2, A3 and A4 

 show variations in this condition. It should be mentioned here that 

 in sweeping and in handling the specimens, the tufts of hairs are 

 apt to be rubbed off. In making an examination of all the spe- 

 cimens, a strong arc-light was used as the source of Illumination 

 and then by means of a fairly high power lens on the microscope 

 and tilting the specimen, I was able to see the sockets where the 

 hairs normally sit. In cases where the hairs had been rubbed oif, 

 it was possible to still see the sockets and usually. the broken stubs 

 of the hairs. In no case of the 34 males examined, were the tufts 

 entirely absent. 



Gray Males. Out of the 40 males studied, not one of them 

 showed any indication of the tufts of hairs such as are charac- 

 teristic of the tufted males. The verj^ dark males were like the 

 typical gray males in this regard. 



General Pilosity of Cephalothorax, 



The general pilosity of all the specimens was carefully noted 

 in Order to determine if the tufted males exhibited this character 

 to any marked degree. Altogether, 74 males and 82 females were 

 examined with regard to this point. A good deal of Variation was 

 found in individual specimens, but the tufted males, except for the 



