302 THE ANNELIDA POLYCHAETA. 



The first parapodia occupy the usual position at the anterior border of the 

 second somite, from which they extend forward a httle ectad of cephalad along 

 the sides of the peristomium, which they surpass, though, excepting the processes, 

 falhng decidedly short of reaching the anterior margin of the prostomium. 

 They are very deep dorsoventrally, being somewhat compressed transversely. 

 The notocirrus is a tapered process of the ordinary form attached on the dorsal 

 surface near the middle of the length and extending distad nearly to the anterior 

 margin of the prostomium. The neurocirrus is attached at the base on the 

 ventral side; it is swollen proximally, above this narrowing rapidly to a more 

 slender process; it appears in the type to fall short of reaching the distal end of 

 the foot. The postsetal process appears to have been worn off, but was appar- 

 ently broad and distally rather blunt. The second parapodia are similarly 

 attached to the first, but they are much shorter and extend more ectad of cephalad. 

 The notocirrus is attached nearer the base; it is a conspicuously tapered and 

 long process extending about two thirds the distance to the middorsal line. 

 The neurocirrus is short, strongly swollen at base, and conical in form. The 

 third parapodia extend in a still more ectal direction and are attached near the 

 middle of somite; like the second they are cylindrical, and distally subconically 

 narrowed and rounded. The notocirrus is like that of the second pair. The 

 neurocirrus is in the form of a swollen, rounded cushion. The postsetal process 

 is apparently broken off in both specimens. The fourth parapodia extend 

 almost directly ectad, and are attached at the middle of the somite and farther 

 dorsad than the first three pairs, which are near the ventral level ; the parapodium 

 as a whole narrows distad from the base and is well rounded at the end. The 

 notocirrus is similar to the preceding ones, but is a little longer. The neurocirrus 

 has become disc-like and merged in the ventral glandular area. The postsetal 

 process is a conspicuously elongate, cirrus-like finger tapering to the free end. 

 The fifth parapodia are attached near the dorsal level. Their general structure 

 is like that of the fourth. Succeeding parapodia maintain the same general 

 structure. But the notocirri become much more slender, in the posterior region 

 being long and almost thread-like. The postsetal process continues to be 

 evident on many parapodia, but at the twenty second has become reduced to a 

 much shorter, pointed process; the precise point at which it ceases to be evident 

 could not be determined. 



The setae in general are light brown, or somewhat ferruginous in color, 

 are coarse, long, and over much of the body overlap those of each succeeding 

 somite. On the first parapodia there are three long, stout, distally conspicu- 



