1906.] NATURAL SCIENCES OF PHILADELPHIA. 239 



and are stout, striated, and of a deep yellow color throughout. They 

 differ very little in form on the different segments, the only noticeable 

 distinction being that the extreme anterior ones have the crest teeth 

 less well developed and the guard hairs fewer. The rather long, 

 slender, curved stem has a distinct but tapering shoulder, a rather 

 long, erect neck and an enlarged head, below which is a very prominent 

 square guard process (fig. 32). The beak is stout and hooked, the crest 

 teeth three or four, the lowermost very large, the upper small or obso- 

 lete; sometimes, especially on anterior uncini, a pair of small but dis- 

 tinct lateral teeth is present. The guard is strong and consists of 

 about sixteen stiff hairs which arise from a scale-like base ensheathing 

 the front of the guard process, and spread regularly in an even curve 

 around the end of the beak, above which they arise convergingly to a 

 considerable height. 



The body of the alcoholics is generally colorless or pale yellow, but 

 the cuticle has a strong bluish iridescence throughout. 



A portion of a tube is soft and flexible, consisting of a thick mucoid 

 substance covered with a stratum of moderate thickness of soft grayish 

 brown silt. 



This species is evidently related to the three species of Maldanella 

 described by Mcintosh from the deep waters of the oceans of the 

 Southern hemisphere. The Japanese maldanid Clymene harai Izuka 

 { = Axiothea campanulata Moore) also belongs to this genus. 



The sources of the examples of M. robusta are Station 4,197, Gulf of 

 Georgia, 31 to 90 fathoms, bottom of sticky green mud and fine sand; 

 Station 4,230, Behm Canal, 108 to 240 fathoms, rocky bottom; and 

 Station 4,246, the type locality, Kasaan Bay, Prince of Wales Island, 

 101 to 123 fathoms, bottom of green mud with coarse sand and shell 

 fragments. 



Clymenella tentaculata sp. nov. Plate XI, figs. 33-35. 



This very interesting species is unfortunately imperfectly known, 

 the following description being based upon one anterior and one 

 posterior piece which may be parts of the same individual and which 

 together represent nearly an entire worm. 



The former measiu-es 22 mm. long and 2 mm. wide at IX and con- 

 sists of the prostomium and nine segments ; the latter is much twisted 

 and the five setigerous segments, four achsetous preanal segments and 

 pygidium measure about 20 mm. long. 



The cephalic plate is very much expanded and flares widely at the 

 margin. Its outline is very broadly oval. The hinder third of the rim 

 is separated from the anterior two-thirds by a pair of small lateral 



