No. 424.] THE GENUS TRYPANOSYLLIS. 297 
General coloration tawny ; parapodia, dorsal cirri, and ante- 
rior extremity, purple; caudal buds, from presence of ova, rich 
yellow. 
Prostomium (Fig. 1) trapezoidal, its length two-thirds of its 
width, distinctly bilobed, the lobes scroll-shaped, with a deep 
median notch at posterior border; eyes 4, on anterior scrolls, 
connate. Palpi, antenna, and median cirrus, all wanting in 
the type specimen. 
Peristomium somewhat broader than the prostomium, enclos- 
ing the latter posteriorly and on the sides; with dorsal and 
ventral peristomial cirri (Fig. 1, .¢.). 
Parapodia uniramous, short, crowded, with 
bases of the dorsal cirri interlocking (Fig. 1, 
d.c.); dorsal cirri (Fig. 2, d.c.) thick, coiled, 
articulated, rather rapidly tapering towards 
the tip; ventral cirrus tongue-shaped or fusi- 
form ; setze (Fig. 3) 11-13 in each foot, with 



Fic. 2. 
Fic. 2.— Foot of 7rypanosyllis NC = about the middle of - length. ac., aciculz 
(three); d.c., do ; Pa., Ventra 
tral cirrus. 
Fic. 3. — Seta of the same, in profile. Si Fic. 74 — Seta, sexual so of the ame. X 467. 
toothless hooked appendage ; aciculz (Fig. 2, ac.) 3-5, their 
distal ends extending into two finger-like lobes, one usually 
much thicker than the other, at the dorsal tip of the foot. 
Mouth large, its transverse diameter equal to width of pro- 
stomium; bounded by 7 crenulations. Somites 1-8 curved 
backward around math, as in Anrhe tan and Pal- 
myridæ. 
