Annelida of the J^ertnudas. 659 



The uncini of the anterior region have a large, sharp, rostrate 

 hook, directed somewhat upward, and three (sometimes four) small 

 appressed apical hooks. 



Color, in life, is light red in the smaller specimens, and with no 

 definite red bauds. The large ones were yellowish brown. 



The tubes are made of fine shell-sand, and stand upright in the 

 sand at low-tide. 



In life the smaller specimens were about 50™™ long and 0.5™™ in 

 diameter, the larger ones about 150™™ long and 4-5™™ in diameter. 



In consequence of the modern revisions of the Maldanidte by St. 

 Joseph and others, it will be necessary to establish additional generic 

 groups. The common, large New England species described by me 

 (1873) as Maldane elongata cannot be placed in any of the 

 recognized genera, and I therefore propose to establish a new genus 

 for it. 



Maldanopsis, gen. nov. Type M. elongata V., 1873. 



Head with a well formed limbate cephalic plate, as in Mcddane. 

 Caudal segment with a wide, prominent foliaceous spatulate lobe on 

 the dorsal side, and on the ventral side a deep, funnel-like, anal 

 opening, surrounded by a distinct semi-circular rim, without den- 

 ticulations, so that the anal opening is inside the margin of the anal 

 plate, and not outside, as in Maldane. This plate is, therefore, more 

 like that of Petaloproctus. 



The anterior setigerous segment has no uncini; the 2d and 3d 

 have short rows of rostrate uncini. All preanal segments bear setae. 



Lumbriclymene filifera Vex. 



The Maldane filifera V., 1879, Proc. U. S. Nat. Mus., p. 179, does 

 not belong to Petaloproctus, as St. Joseph supposed, but rather to 

 Lumbriclymene Sars, 1871, but it differs from the type, so that the 

 generic characters should be altered somewhat. Its anal region con- 

 sists of a somewhat flattened cone, turned up dorsally and nearly 

 acute, but without a limbus. The small anus is close to the tip on 

 the dorsal side of the segment, while the oblique postero-ventral 

 side may be flat or concave. The head has a central carina with a 

 pit each side of it, but no definite plate or limbus. The anterior 

 ventral tori contain one or two spiniform setae. The tAVO shoi't 

 pi'eanal segments have small tori, but no setge. 



