1906.] NATURAL SCIENCES OF PHILADELPHIA. 233 



those found on the dorsal surface that to the naked eye they appear 

 merely as a fine granulation. 



Every somite, including the peristomium, bears both notopodial 

 and neuropodial setse in small lateral tufts. The setae of both fascicles 

 have the same character, all being slender and transversely jointed, 

 except at the acutely pointed tip. The former (fig. 16) are very slender 

 and delicate and the internodes increase in length toward the tip. The 

 latter (fig. 17) are more deeply colored, much stouter, distinctly curved 

 and the much shorter joints decrease in length toward the tip. In 

 both tufts the number of setse is small, about eight notopodials and 

 eight or ten neuropodials being the rule. On the peristomium the 

 notopodials are very long, equalling four or five segments, and they 

 project forward far beyond the mouth. On succeeding segments they 

 project outward and upward and decrease in length until they are about 

 equal to the segment bearing them. The neuropodials are rudiment- 

 ary on I, but increase in both length and thickness on succeeding 

 anterior segments, those at the posterior end becoming again more 

 slender but without diminution in length. 



As stated above the prostomium is in all cases retracted. A dissec- 

 tion shows that the tentacles are fine and very numerous, numbering 

 upwards of thirty on each side. They are borne on a pair of bosses 

 which are about twice as wide dorsally as ventrally, where they curve 

 around the mouth and nearly meet. The palpi are very short and 

 broad and marked by a longitudinal groove and transverse wrinkles 

 on the ventral side, the dorsal surface being smooth. The skin is 

 gray, but the papillae impart to the dorsal surface a buffy yellow color. 



Brada pilosa very closely resembles Trophonia hirsuta Theel, but is 

 distinguished by the reduction in size and number of the papillae form- 

 ing the setal rosettes and by the un jointed tip and other peculiarities 

 of the setae. 



The species is not uncommon northward. Examples occur from 

 the following stations : Station 4,251 (type locality), Stephens Passage, 

 198 fathoms, rocky bottom; 4,235, Yes Bay, Behm Canal, 130 to 193 

 fathoms, gray mud; 4,252, Stephens Passage, 198 to 201 fathoms, gray 

 mud; 4,258, Lynn Canal, 300 to 313 fathoms, mud. 



Maldane similis sp. nov. Plate XI, figs. 26-30. 



The type and largest example is 56 mm. long and 2.5 mm. wide, 

 the latter being nearly constant throughout the entire length. 



This species belongs to the M. biceps group in having the cephalic 

 and caudal plates of nearly the same form and size. The cephalic plate 



