124 Thirty-second Report on the State Museum. 



MALDANE (Orube) Malmgren. 



Grube. Archiv fur Naturg-eschichte. 1860. 

 Malmgren. Nordiska Hafs-Annulater, p. 186. 1865. 



Maldane elongata Verrill. 



Verrill. Invert. Animals of Vineyard Sound, etc., p. 609. 1874. 

 Webster. Annel. Chset. of the Virginian Coast, p. 259. 1879. 



Rare ; only one specimen was taken. 



PRAXILLA Malmgren. 

 Nordiska Hafs-Annulater, p. 191. 1865. 



In characterizing the genus Praxilla Malmgren assigns to it twenty-six 

 segments, of which nineteen are setigerous, and five ante-anal without setae. The 

 following species belongs to Praxilla in all other respects, but has more than 

 twenty-six segments, and less than five nude anti-anal segments. 



Praxilla elongata n. sp. 



PLATE VI, FIGS. 55-59. 



Buccal segment (fig. 55) with a projecting margin, slightly emarginate in the 

 middle line above, and with a very narrow, hardly perceptible incision on each 

 side, a little back of the middle. The cephalic plate has a well defined, median 

 carina, widest in front, and with a flattened, slightly projecting portion, broadly 

 rounded at the apex. 



After the fifth segment the diameter increases gradually to the tenth ; remains 

 unchanged to the thirteenth : decreases gradually to the sixteenth ; then falls off 

 suddenly to about one-half the previous diameter, after which it remains 

 unchanged. 



(Segments one, two, four, five and six have about the same length ; three, 

 seven, eight and nine are a little longer than the preceding ; ten to fifteen about 

 double the ninth ; sixteen to thirty-six a little shorter than the fifteenth ; last 

 three equal to each other — together equal to the thirty-sixth (fig. 56). 



The anterior margin of the fifth segment is raised and rounded, embracing the 

 posterior end of the fourth. The first fifteen segments are nearly cylindrical, 

 segmentation distinct, and crossed by numerous impressed lines; after the fif- 

 teenth the form suddenly changes, the anterior end being narrow, diameter 

 increasing regularly to near the posterior end, then somewhat suddenly decreas- 

 ing ; the posterior margin of the ante-anal segment is raised, rounded, forming a 

 sheath for the anterior end of the anal segment. 



The anal segment is funnel-shaped ; margin surrounded by a circle of conical 

 or finger-shaped papillae ; very similar to the anal segment of Clymenella tor- 

 quata Verrill. 



Setae ; dorsal (capillary) numerous, long, delicate, bilimbate (fig. 57) ; after 

 the fifth segment there is a distinct, rounded papilla, or dorsal ramus, from 

 which the setae arise ; ventral (uncini), on the first three setigerous segments 

 only one, or occasionally two, to each ramus ; these end in three sharp teeth 



