224 PROCEEDINGS OF THE ACADEMY OF [Vol. LXXV 



diameter of 1.6 mm. which is very slightly exceeded by one other 

 specimen. 



Head an irregular knob-like enlargement forming an angle with 

 the body axis of about 45°; slightly compressed in caudal half but 

 somewhat depressed forward where it tapers to the rounded pal- 

 pode; length about twice greatest width and one and one-third 

 greatest depth, both at caudal end. Limbus obsolete except for 

 a slight transverse fold that remains of the posterior portion and 

 extends across the dorsum at the boundary between the peristom- 

 ium and somite II and a short flange at each side of the broad, 

 flat, semicircular palpode. Keel high, narrow, prominent, uniform, 

 reaching from palpode to end of middle-third of head, where a faint 

 furrow encircles the latter. Nuchal organs deeply incised, narrowly 

 > -shaped, the medial limb close to and parallel with the keel, 

 the lateral limb about f as long and nearly parallel with the 

 margin of the head. Mouth large for a maldanid, crescent -shaped, 

 with a cushion-like upper lip occupying an elliptical depression. 



Other specimens have the head somewhat more contracted and 

 forming an angle with the body slightly greater or less than the 

 type, and nuchal organs forming a somewhat wider >. 



Somite II separated from the head by a faint furrow only, 

 elongated and slender, length four to four and one-half times and 

 diameter two-thirds head, strictly cylindrical, not distinctly 

 divided into two annuli but marked by numerous faint encircling 

 lines, setae fascicles close to anterior end. Somite III is of slightly 

 greater diameter than II and one-half (in some of the cotypes) to 

 three-quarters (in the type) the length of II. One-fifth of this 

 length is of the collar which is slightly oblique, with the dorsal 

 margin less produced and somewhat emarginate. Otherwise its 

 margin is perfectly entire and smooth and it closely embraces the 

 slightlj^ contracted caudal end of II. IV is similar to III which 

 it slightly exceeds in diameter, but is somewhat shorter. It bears 

 a similar but slightly lower collar and differs from III in the thick 

 glandular zone that covers its cephalic two-thirds. Both III and 

 IV, but especially the former, are very readily detached. 



The remaining four segments of the type lack collars, but the 

 slightly projecting anterior glandular margins somewhat embrace 

 the preceding segment laterally. V is the shortest, being about 

 three-fourths as long as IV, while VI, VII and VIII each nearly 

 equals III. All of these have the anterior end to and including 

 the tori thickly glandular, except in the dorsi-meson, and the slight 

 lateral lips embracing the preceding segment. 



On the first two setigerous segments the fascicles lie close to the 

 anterior end; on the others somewhat cephalad of the middle. The 

 first four (II-V inch) bear setae only, the others both setae and 

 uncini, the setae fascicles on the latter being larger and the tori 

 low and narrow. 



