]^903.] NATURAL SCIENCES OF PHILADELPHIA. 481 



tions into 4 slightly marked sub-lobes; anterior lobes also suberect, 

 much higher than 'posterior, with smooth, rounded, entire margins 

 anteriorly meeting the palpode, from which they are separated by a 

 distinct sulcus; median ridge nearly f length of cephalic plate, very 

 narrow, high and prominent, udth a sharp compressed summit, of equal 

 width throughout, ending anteriorly in a short palpode about 3 times 

 its width but stiU narrow; sense organs bounding median ridge rather 

 broad shallow depressions, included with the ridge in a narrow lyre- 

 shaped area occupying the middle i of the cephalic plate exclusive of 

 the Umbate margin, with its base dorso-caudad, while the arms fade 

 out anteriorly to the sides of the palpode. 



Head and anterior somites divided into numerous small raised areas 

 which under a lens have an appearance and lastre hke the human skin. 

 First 4 setigerous somites short, diameter and length about equal, 

 and length shghtly decreasing to the 4th. first very broadly attached 

 to the peristomium; from the 5th setigerous somite (VI) the length 

 increases to X, though IX, which is separated from X only by a very 

 obscure furrow, is somewhat shorter than VIII; no specially developed 

 coUar though each anterior somite is extended into a low fold which 

 somewhat embraces its predecessor, and which is strongly glandular 

 on VII, VIII and IX; last 3 setigerous somites (intervening ones un- 

 known) decreasing in length, cyhndrical, the last in this specimen much 

 shorter than thick, but probably it and the following achstous somites 

 are considerably contracted; 2 preanal and anal somites very short, 

 slightly telescoped, with posterior margin prominent, and on the anal 

 somite forming a sharp annular shoulder from the center of which the 

 anal funnel arises. Anal funnel with a short stalk, having a diameter 

 of about i the body of the anal somite, but spreading in a low coroUa 

 form to the diameter of the latter, in length equalling the anal and one 

 preanal somite; its margin regularly denticulate with 43 regular, 

 pointed, triangular teeth longer and narrower than those of Axiothea 

 campanulata, with an occasional one bifid, and none in the neural line, 

 which is very distinct to the edge of the funnel; anus central, sur- 

 romided by minute papillse and radiating ridges, but not elevated on 

 a large central papilla. The relation of the funnel to the anal somite in 

 the type specimen is probably due largely to contraction. 



First eight setigerous tori on anterior end of somites, the others 

 posterior; anterior tori very low and obscure, becoming swollen and 

 conspicuous by X; on last 3 setigerous somites prominent and reach- 

 ing weU ventrad, where they are separated by a median distance of 

 ab'out i their length, the interspace being occupied by a glandular area; 

 31 



