612 REPORT OP COMMISSIONER OF FISH AND FISHERIES. 



Cistenides Gouldii Yerrill, sp. nov. Plate XVII, figs. 87, 87a. (p. 

 323). 



Peetinaria Belgica Gould, Inyertebrata of Massachusetts, lsted., p. 7, Plate 1, fig. 

 1 (tube), 1841 (not of European writers). Peetinaria auricoma Leidy, op. cit.> 

 p. 14 (146), 1855 (not of European writers). 



Body rather stout, little carved. Head with the dorsal surface 

 obliquely truncated, its posterior marginal fold with a smooth border. 

 Antennae long, tapering, acute ; frontal membrane or veil semicircular, 

 its edge divided into rather long, slender, acute papillae, about twenty- 

 eight in number. Cephalic setae in two broad groups, each containing 

 about fifteen light golden setse, which are somewhat curved upward, 

 with long, slender, very acute tips, those in the middle of each group much 

 the longest. Tentacles stout, obtuse, flattened, and folded up so as to 

 form a groove beneath. Color light red or flesh-color, handsomely mot- 

 tled with dark red and blue. 



Length up to 40 mm ; diameter, 7 mm . 



Great Egg Harbor to New Haven and Cape Cod ; low- water to 10 

 fathoms. 



This species can easily be distinguished from C. granulatus, which is 

 common in the Bay of Fundy, by the cephalic setae or spines, which are 

 fewer, much stouter, obtuse, and darker colored in the latter. 



Ampharete gracilis Malmgren. Plate XYI, fig. 83. (p. 508). 



Nordiska Hafs-Annulater, Ofvers. af kongl. vet. Akad. Forh., 1865, p. 365, Plate 

 26, figs. 75-75r>. 



Body flesh-colored, greenish posteriorly, with a conspicuous red median 

 vessel ; branchiae light sea-green. 



Length, 25 mm to 35 mm ; diameter, 2.5 mm to 3 ram ; length of branchiae, 

 6 mm to 9 mm . 



Off Gay Head, 10 fathoms; off Martha's Vineyard, 23 fathoms; east 

 of Block Island in 29 fathoms ; Bay of Fundy, 10 to 90 fathoms ; north, 

 ern coasts of Europe, Bahusia, at Koster Island, in 130 fathoms. Our 

 specimens differ slightly from the description and figures of Dr. Malm- 

 gren, especially in usually having but twelve uncigerous segments in 

 the posterior region, instead of thirteen, found by him in the European 

 specimens. This may be due to difference of age or sex. There are, 

 however, thirteen in one of our specimens. 



Ampharete setosa Verrill, sp. nov. (p. 416.) 



Body rather thick anteriorly, tapering rapidly backward. Cephalic 

 lobe acute, with a much shorter, small, lateral lobe on each side. Bran- 

 chiae eight, transversely wrinkled, rather short ; in preserved specimens 

 about equal to the breadth of the body. Palmulae, or cephalic fascicles 

 of setae, short and broad, rounded, fan-shaped, the setae being nearly 

 equal, the ventral ones a little longer than the lateral. Fourteen seg- 

 ments bear small fascicles of long setae, supported by prominent lobes 

 at the base. The posterior region consists of about ten uncigerous seg- 



