654 A. E. Verrill — Turhellaria, JSTemertina, and 



Cirratiilus (Audouinia) Websteri V., noin. nov. 



Cirratuhis tenuis Webst., Bull. U. S. Nat. Mus., No. 25, p. 323, pi. xi, figs, 

 56, 57, 1884 (won Verrill, Eep. Inv. Vin. Sd., 1873). 



This Bermuda species is quite distinct from A. ccqnllaris, which 

 seems to be more nearly allied to A. punctata (CErst. & Gi*.), from 

 St. Croix. The latter is said to have an interrupted row of cirri on 

 the 5th segment, and differs in other ways. 



C. assimilis Mclnt., which we also obtained at Bermuda, has two 

 oblique series of eyes and larger branchial cirri. 



Euclymene V., nom. nov. Type, Clymene (Erstedii Clap. 

 Clymene Savig., 1817 {non Oken, Moll., 1815). 



The name Clymene having been preoccupied by Oken, I propose 

 to substitute Euclymene for it. 



As here understood, it would include as a subgenus, Praxillella 

 Ver., 1882, type P. gracilis (Sars) = Pr axilla, pars ^ Mgn., 1865 {non 

 Reich,, 1853), But if the latter cannot well be distinguished as a 

 subgeneric group, then Praxillella should include the entire genus as 

 being the earliest tenable name. The extended genus is character- 

 ized by the limbate head; funnel-shaped anal segment, bordered by 

 numerous papillae ; and especially by having on about three anterior 

 setigerous segments, one or two stout, bent spines, replacing the 

 rostrate uncini of the ventral parapodia. The setae are mostly bilim- 

 bate, but there are generally, if not always, some smaller pennate 

 setae, especially in the first three fascicles. The uncini have three to 

 five apical hooks in one row. 



The typical forms seem to lack a distinct, free thoracic collar, but 

 some aberrant deep-water forms, that have been referred here, have 

 a collar. They seem to represent new genera,* 



*Clymenopsis V. Type C. cingnlata (Elil.) Florida Annel., Blake Exp., p. 185, 

 pi. xlviii. This is characterized by the presence of a lai'ge collar on the 4th 

 segment, most prominent beneath. The head is gibbons, with a very narrow 

 limbus, and confluent with the buccal and following three segments. Uncini 

 and antei'ior spines are as in Euclymene. Setae bilimbate. Anal segment 

 unknown. 



Clymenura V, Type C. cirrata (Ehl.) op. cit., p. 183, pi. xlvi, figs. 10-13. 

 Head as in Euclymene. Anal segment elongated, with a circular rim, bearing 

 4 long cirri. Uncini remarkable for having, above the large tooth, two trans- 

 verse rows of numerous small booklets, the first row containing about 9 larger 

 ones, the 2d many more. The 3d, 3d and 4th setigerous segments are elongated, 

 and each has a narrow anterior collar. 



