12 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 98 



The prostomium is dorsally flattened, its basal half as broad as the 

 prostomium is long ; provided with 4 well-separated dark eyes, dis- 

 posed in a rectangle ; the anterior half of the prostomium narrows 

 rapidly to a blunt, truncate anterior margin, where the prostomial 

 antennae are inserted (fig. 2, c). The prostomial antennae are white, 

 their bases nearly touching, they extend distally almost as far as the 

 palpi when the latter are directed forward. The palpi are pale, with 

 brown pigment on their inner faces ; they are inserted at the sides 

 of the prostomial lobe so as to leave only a small space between their 

 bases and those of the prostomial antennae. 



Peristomial cirri are pale, short ; the longest extends posteriorly to 

 about the fifth parapodial segment, the shortest about as long as the 

 prostomial antennae. The peristomial ring is only slightly longer than 

 the next segment (fig. 2, c). 



The paragnathal armature consists of the following: Area I with 

 2 larger, pointed cones in tandem and about 50 smaller cones of vary- 

 ing sizes covering the space between the paired areas on II ; area II 

 with 8-10 larger cones, about as large as those on area IV (areas I and 



II are confluent) ; area III with about 20 larger cones, these disposed 

 in a longer outer row of 7 cones, and 2-3 shorter rows of similar 

 cones ; area IV with about 12 larger cones in 2 crescentic rows (areas 



III and IV are continuous). The cones on areas III and IV are the 

 largest on the proboscis. Area V with about 50 minute cones, sepa- 

 rated from one another and completely filling the space between the 

 paired areas VI (fig. 2, d) ; area VI with 5 large, pointed cones dis- 

 posed in a straight, transverse line, continuous with areas VIII ; areas 

 VII and VIII form a broad, continuous zone about one-half as broad 

 as the oral ring is long, consisting of many tiny cones (well over 100) 

 and a few larger points scattered among the tiny points. These 

 paragnaths compare in size and form with those on areas I and V. 

 The jaws are dark brown, with a curved fang and about 5 oblique 

 teeth. 



Parapodia are lateral, the setigerous lobes moderately stout but not 

 conspicuous. The dorsal ligule is approximately equitriangular in an- 

 terior parapodia, its dorsal cirrus inserted on its dorsal, proximal base, 

 and about twice as long as the ligule. Posteriorly, the dorsal ligule 

 decreases gradually in size, and by the fortieth segment is much 

 smaller than the dorsal cirrus (fig. 2, c). Ventral cirri are pale, small, 

 not extending distally as far as the ventral lobe (fig. 2, e). 



Setae include (1) homogomph spinigers, with fairly short, serrated 

 blade (fig. 2, /), (2) heterogomph spinigers, resembling the first in 



