206 eobeet h. wolcott: 



The mandibles are nearly typical in form, though a little longer than 

 the average for the genus, the maximum width being equal to about one- 

 third the length, which in the specimen just referred to is 0.148 mm. The 

 greatest breadth is near the posterior end; the dorsal margin is slightly 

 concave, the posterior dorsal angle rounded, the posterior ventral angle 

 produced, forming a point of muscle attachment, and the ventral margin 

 nearly straight; a shallow mandibular groove is present. The distal seg- 

 ment includes about one-third the total length, and most of this is made 

 up by the slightly curved and rather slender claw, which is indistinctly 

 hooked at the tip and marked on the inner side toward the base by 

 slightly curved oblique striae, which are vertical to the line of insertion 

 of the claw. 



Palpi, long and slender, segment 1 about half as thick as it is long: 2 

 the thickest of all and nearly as thick as long; 3 about two-thirds as thick 

 as 2, and a little over half as long; 4, longest of all, but only about half as 

 thick as 2; 5 slender, curved, at the base nearly as thick as 4, but at once 

 strongly contracted and throughout most of its length with the dorsal and 

 ventral surfaces nearly parallel. From above or below the palpi appear 

 even more slender than from the side, the extreme width of 2 at about 

 the middle being only three-fourths of its thickness and the palpus ta- 

 pering gradually and evenly from this point to the tip which is blunt and 

 bears very small claws; 2 has two small spines on the outer side close to- 

 gether and near the dorsal margin, and one on the inner side near the 

 middle, with a second very small on© close to the base; 3 has a very long 

 stout spine in the middle of the outer side and one smaller but still long 

 and stout on the dorsal side near the distal margin. On 4 are the three 

 papillae characteristic of the genus, the two being but a little beyond the 

 middle of the segment, the third at the distal mai'gin, and all three being 

 exceptionally long and slender. The outer of the two is the longest and 

 its length equals the thickness of the segment, the third at the distal end 

 is about two-thirds as long as the outer, and the inner of the two only 

 about one-third as long. The two bear each a small hair, the third a broad 

 chitinous cap. There is, finally, a long slender hair on the outer side of 

 this segment near the base. 



The maxillary shield, as far as its main portion is concerned, is broad, 

 short and evenly rounded posteriorly, with a rather prominent rostrum 

 anteriorly; the ancoral process is nearly as long as is the main portion, 

 is broad at its base, its lateral margins forming with the anterior part of 

 the margin of the former a nearly straight line; and tapers to a narrow 

 tip, which is produced to either side forming recurved hooks. 



The epimera are rather large, especially the posterior group, and the 

 spaces between the groups are narrow in the male, wider in the female. 

 The posterior margin of the anterior group is strongly convex while at 

 one- third the distance from the inner to the outer end and opposite the 

 suture between I and II, the two give rise to a long curved process which 

 runs back to a considerable distance beneath III. The separation be- 

 tween III and IV is represented by a line at about two-fifths the distance 

 from the anterior margin and which curves from the outer side obliquely 



