Annelida of the Bermudas. 603 



Syllis (Typosyllis) corallicola, sp. nov. 



A large sj)ecies with long, strongly beaded antennse and cirri, and 

 with a large, rather short, dark brown, chitinous oesophagus armed 

 with a single tooth near the emarginate edge. 



Head large, about one-third broader than long (1: 1.33 to 1: 1.50 

 in contraction), frontal margin broadly rounded and slightly three- 

 lobed, the median lobe only slightly prominent, sides strongly convex, 

 narrowing backward, posterior margin with a wide shallow emargi- 

 nation. Eyes conspicuous, with lens, but not very large, the ante- 

 rior distinctly larger and farther apart, those of the same side pretty 

 near together. Palpi large and broad, separate to base ; when 

 extended the free part is as long as the head or longer, ovate-lance- 

 olate, slightly incurved on inside, obtuse at the end. Odd antenna 

 or tentacle long and tapered, about 5 times as long as the head, its 

 free portion 3^ times as long as that of the palpi, strongly beaded, 

 the annuli about 40, short and not very separate proximally, but 

 becoming longer and very distinctly constricted distally. Antennse 

 about \ shorter than the tentacle, and more slender, beading similar, 

 the annuli broader than long. Dorsal tentacular cirri much like the 

 tentacle, but ^ longer ; ventral one smaller and nearly \ shorter. 

 Anterior dorsal cirri are also mostly long like the tentacular cirri, 

 but farther back part of them, alternating irregularly, become shorter; 

 the longer ones are 2 to 3 times as long as the tentacle and equal to 

 twice the diameter of the body, while the shorter ones are equal to 

 about f its diameter. 



The setffi are slender and long, the upper ones with rather long, 

 narrow, nearly straight, lanceolate blades, 6 or 8 times as long as 

 wide, with minutely bidentate tips ; the lower and posterior ones 

 have wider, bidentate blades, often only 2 or 3 times as long as 

 broad. Anteriorly 3 or 4 spiniform acicula occur in each fascicle ; 

 1 or 2 posteriorly. 



The oesophagus (or chitinous proboscis) is stout, moderately long, 

 occupying 10-12 segments, often wrinkled or crumpled in con- 

 tracted specimens, dark brown, its anterior edge not denticulated, 

 but with a ventral emargination ; the median tooth is rather large 

 and a little back from the edge. The stomach is long, occupying 

 14-17 segments, in preserved specimens about \ longer than the 

 oesophagus and decidedly stouter, a little wider in the middle, cov- 

 ered with dense rows of dark rounded granules or glands. 



Color, in formalin, yellowish white ; the annuli of the cirri have 

 groups of pale greenish pigment cells. 



Length up to 1.5 inches or more (or 40™°^;) diameter, 2-3™°^. 



Trans. Conn. Acad., Vol. X. December, 1900. 



40 



