ANNELIDA FROM BERMUDA. 325 



Fam. SABELLID^. 

 PEOTULIDES n. g. 



Branchiae united along their inner i)art by membrane. 



Setfe of first segment in an oblique double series. Uncini in two 

 series and of two kinds on all segments. Anterior dorsal setae of two 

 kinds. Collar complete, save for a narrow dorsal incision ; not reflexed. 

 Ventral sulcus continued on the dorsum. 



This genus is closely related to Fotamilla Malmgren, but diliers from 

 it in the character and arrangement of the setaj of the first segment, in 

 the continuation of the ventral sulcus on the dorsum, and in having 

 two rows of uncini on the abdominal segments. 



Protulides elegans n. g., n. sp. 



(Plate XI, Figs. 63-74.) 



The branchial cirri are from nine to fourteen on each si^e, base form- 

 ing a semicircle ; they arise from a long undivided basal part, one-half 

 as long as the cirri themselves ; pinme elongate, delicate; short terminal 

 part of the cirrus without pinnae. 



There are two series of minute eye-specks, one about two-thirds of the 

 way out on the cirri, corresponding to the space occupiied by six or 

 seven innnaj ; another, still further out. These eyes cannot be seen in 

 alcoholic specimens. 



Tentacles flattened, triangular, length about one-fourth that of tlio 

 branchiae. 



The first segment is double the length of the second, comi)lete save 

 for a narrow dorsal incision (Fig. G3). 



There are from six to eight thoracic segments, the variation in num- 

 ber not depending on size, as some of the largest specimens have but 

 six segments. Posterior segments short; numerous. 



The setie of the first segment are in two series, which run obliquely 

 from before backward, along the entire length of the segment. All 

 these setae are dilated at the end, and have a capillary apex; they do 

 not difler from each other much in form (Figs. G4-66) ; there are about 

 forty setae in each row; they barely project from the surface. 



Seta3 of remaining thoracic segments of four kinds : In the dorsal 

 ramus, from 4 to 5 long bi-limbate setae (Figs. 67, 68); below these a 

 double series of short setae, with dilated globular extremities (Figs. 09, 

 70) without capillary terminations. In the ventral ranuis are the two 



