INVERTEBRATE ANIMALS OF VINEYARD SOUND, ETC. 615 



iirisiuf? from the summit of the stout and rather long pedicels.* There 

 are usually fiv^e or more maiu divisions ia good-sized specimens, these 

 spread outward from one point, are recurved at the ends, and flexuous 

 and bipinnately branched, the lower j)inna3 being longest each time, 

 and the ultimate divisions very numerous, fine, slender, and acute. 

 The branchiae of the posterior pair, in normal specimens, are consider- 

 ably smaller, with the divisions less numerous, and the ramuli longer 

 and more delicate. The pedicels of the anterior branchiae are about as 

 long as the diameter of the body, and are very contractile, as well as the 

 brandies, so that the gills can be contracted into a small compass and 

 withdrawn under the dorsal collar, beneath which the pedicels arise. 

 This branchial collar is formed by the prolongation of the margin of the 

 third segment; on each side of the median line above, it is divided into 

 two narrow, lanceolate processesdirectedforward ; exteriorto these there 

 are two other wider and usually less prominent angles or lobes ; laterally, 

 the collar is prominent, with a broadly rounded, thin margin, which 

 forms another angle on each side beneath ; on the ventral side its edge 

 recedes and is but little raised. The tentacular collar, formed by the 

 second segment, expands into a broad, rounded, prominent lobe on each 

 side; and on the ventral surface becomes narrower, though still promi- 

 nent, and recedes in a broad, rounded sinus behind the posterior lobe 

 of the mouth. The cephalic segment is bordered by a rather broad 

 frontal membrane, emarginate above, and broadly rounded laterally. 

 Tentacles very numerous, long, and slender. Color, light red, brownish 

 red to dark reddish brown ; the annulations often darker; the upper 

 surface is usually more or less specked with flake- white; along each 

 side, below, there is usually a row of squarish spots, brighter red than 

 the rest of the body, each pair connected by a narrow, transverse line 

 of red between the ventral shields, which are dull yellowish red ; the 

 segments along the sides are often bordered with red ; branchia? usually 

 green, specked on the outer sides of the branches with flake- white, and 

 with internal blood-red vessels, showing distinctly in all the divisions ; 

 the pedicel is usually bright red; tentacles, flesh -color. 

 Length up to 70™"^ ; diameter, 3'""'. 



Great Egg Harbor to Xew Haven and Vineyard Sound ; low-water 

 mark to one fathom. 



Lepr^a rubra Yerrill, sp. nov. (p. 382.) 



Body elongated, somewhat swollen anteriorly, rapidly tapering to the 

 very long, slender, posterior portion. x\il the segments posterior to the 

 branchijB bear small fascicles of slender seta^ as well as uncini ; pos- 

 terior to the twenty-fifth setigerous segment the uncigerous feet become 



* In mentiouing this species, on page 321, it was stated that it has but three gills, 

 and, in fact, this is the most frequent number. Amoug the numerous examples exam- 

 ined, I have only recently found a specimen with both pairs of gills in their mumal 

 c ondition. 



