Annelida of the Bermudas. 649 



Eyes round, black, with lens, the anterior ones much the larger, 

 situated at the anterior bases of the antennoe and as broad as the 

 antennte, or a little broader; posterior eyes about half as large and 

 nearer together, thus forming a trapeze. Antennae longer than the 

 palpi, tapered, distinctly annulated, with 13 articles. The articles near 

 the base are short; distally they become much longer and more sepa- 

 rated, the last two being 4 or 5 times broader than long, and these 

 two joints project beyond the tips of the palpi. The palpi are 

 stouter than the antennae, curved, tapered, crenulated on the outer 

 edge, and slightly annulated distally. 



Dorsal cirri are biarticulate, rather long and slender, the basal 

 article longer and about equal to the setigerous lobe on anterior 

 part of body, while the distal article is more slender, tapered, acute. 

 Posteriorly the basal article becomes longer and more slender, 

 exceeding the setigerous lobes, and the distal joint also becomes 

 longer, nearly as long as the basal, with a slender acute tip. 



Setfe are long and numerous, the capillary ones are slender and 

 straight, a little longer than the compound ones, which have a 

 narrow blade, 5 to 8 times longer than wide, with strongly biden- 

 tate tips. 



The lower jaws are strong, black, both ends strongly bent back 

 like a short bow, the posterior end blunt; the anterior prolonged by 

 a series of 4 small separate pieces ; the upper jaws are elongated, 

 little bent, divided into about 20 denticulated plates, with very acute, 

 long, incurved denticles in the under series, anteriorly. 



None of the specimens have the caudal segments ; the longest is 

 10°^™ long, 2™™ broad, and has 38 setigerous segments. 



Stauronereis erythrops, sp. nov. 



Head broadly rounded in front, a little produced posteriorly, 

 longer than broad. Eyes yellowish-brown, arranged in a trapeze, 

 and much smaller than in the preceding species, the anterior about 

 twice as large as the posterior, all with a lens. The antenna? and 

 palpi are short and about equal, in length less than breadth of head; 

 the palpi are stouter than the antennae ; the latter are annulated. 

 The dorsal cirri ai-e much shorter than in the preceding species; 

 the basal article is thick, the terminal is small, ovate or elliptical ; 

 the total length about the same as the setigerous lobe, or a little more, 

 anteriorly, but posteriorly both articles become longer and the cirri 

 considerably exceed the setigerous lobes. The compound setae have 

 rather sbort bidentate blades; their length 3 to 5 times their breadth. 



