336 PROCEEDINGS OF THE ACADEMY OF [April, 



dium overlapping neuropodium from behind. Notopodium much 

 smaller than neuropodium but reaching nearly as far distad, ovate, 

 compressed, oblique, divided by the setigerous cleft and bearing near 

 the ventral border a prominent, conical acicular tubercle. Neuro- 

 podium compressed, the base somewhat narrowed and distal part 

 expanded and tapering to a right-angular apex near the dorsal border, 

 from which the tapered truncate acicular process projects and bears 

 on the dorsal side of its distal end a blunt, finger-like cirrus equal to 

 its own length. On posterior segments the two rami become more 

 nearly equal, the notopodium more slender and projecting and the 

 interramal sinus wider. 



Notocirrophores prominent, cylindroid with tumid base, suberect 

 and curved, arising postero-dorsad to notopodia; styles similar to 

 tentacular cirri, mostly curved postero-medially over dorsum, on 

 middle segments reaching the length of their terminal filaments 

 beyond median line and nearly unchanged in length posteriorly. On 

 all parts except the terminal filament they bear numerous cilia of 

 varied lengths, many of those on the basal half having a length of 

 twice the diameter of the style. Neurocirri arise much proximad of 

 the middle of ventral face of neuropodium, are smooth, subulate, 

 slender and reach nearly to the base of the acicular process of neuro- 

 podium. Neurocirrus of II about two and one-half times length of 

 others and terminated abruptly in a filament. 



Aciculum single in each ramus, stout, tapered, yellow, the blunt 

 end projecting for a considerable distance beyond the acicular process. 

 Setae all pale yellow. Notopodials arranged in a short compact tuft pro- 

 jecting much dorsad but spreading only slightly. They (PI. XXVIII, 

 figs. 2 and 3) are about as stout as the neuropodials, the distal half 

 bearing numerous, rather distinct and extensive combs; their ends 

 blunt and free of the transverse pectinated processes for only a short 

 distance, some nearly or quite smooth but many bearing a greater 

 or less number (figs. 2 and 3) of appressed scale-like teeth and a few 

 with brush-like ends like those of E. truncata. The few perlstomial 

 setae are like the shorter, curved notopodials. Neuropodial setae 

 (fig. 1) in about three supra-acicular and six subacicular series, gently 

 curved, with enlarged ends bearing from eleven, on the short setae 

 of the ventral row, to twenty, on those of the dorsal row, transverse 

 pectinae on each side which become conspicuous in size and distinctly 

 alternate in position only toward the distal end; smooth tips long, 

 two to three times greatest diameter of the setae, stout, strongly hooked 

 and without trace of an accessory process. Caudally the setae become 

 much more slender but are otherwise unmodified. 



