3S8 PROCEEDINGS OF THE ACADEMY OF [April, 



Prostomium not obvious from above, forming a pair of prominent 

 lateral lips below; parapodia produced straight forward (fig. 99). 

 coalesced with the lateral tentacles above and the palpi below, stout 

 and not much elongated, projecting little more than one-third of their 

 length beyond the prostomium and not at all beyond the parapodia 

 of II, supported by a single (notopodial) aciculum and bearing a small 

 tuft of long, very slender, finely hispid capillary seta\ Tentacular 

 cirri nearly in contact at their bases, separated by the small tuft of 

 setae only; the dorsal arising by a rather prominent cirrophore, the 

 style also rather stout, tapered, about two and one-half times as long 

 as the prostomium and obscurely moniliform or articulated distally; 

 ventral immediately beneath dorsal, apparently lacking a distinct 

 cirrophore, and the style only about one-third as long as the dorsal 

 but nearly as stout at the base. 



The general aspect of the body is remarkably like a Nepkthys, being 

 somewhat quadrate or prismatic with the dorsum slightly arched and 

 anteriorly finely cross-wrinkled, the ventral muscles forming a some- 

 what sole-like tract, the intersegmental furrows nearly obsolete, the 

 diameter nearly uniform but gently tapering caudad and the cuticle 

 very smooth with a delicate pearly luster. Only a small regenerating 

 pygidium is present and bears no cirri. 



Parapodia arise at a level slightly above the ventral sole and with 

 the exception of several at the cephalic end project directly laterad. 

 They are somewhat compressed and oblong, truncate distally where alone 

 the rami are differentiated. Taking XXV (PI. XXXIII. fig. 1006) as 

 typical the rami are of equal length or the notopodium slightly longer and 

 each supported by a single stout aciculum. The neuropodium is about 

 twice as deep as the notopodium, broad and nearly truncate at the 

 end but sloping gently and symmetrically dorsally and ventrally from 

 a slight elevation and shallow notch which receives the tip of the 

 straight aciculum. On the distal end are two tufts of finger-shaped or 

 fusiform stylodes, a supra-acicular of nine or ten arranged in two rows, 

 of which the posterior are nearly twice as long as the anterior and 

 nearly equal to the setae and a subacicular of four or five of various 

 lengths; a low entire presetal membrane passes vertically down the 

 anterior face. The setae are arranged in three curved series, a dorsal 

 anterior curving from the dorsum down the anterior face and slightly 

 caudad above the aciculum, partly enclosing the dorsal group of 

 stylodes, an antero-ventral beginning below and anterior to the 

 aciculum and curving round the ventral side of the ventral group of 

 stylodes, and a postero-intermediate which forms a postero-ventral 



