13 J: K. J. Push — Two genera of tuoicolous Annelids. 



One (No. S09), from 292 fathoms, described and represented 

 in figure 13, plate 58, has an asymmetrical tapered segmented 

 cone on the operculum, the end broken off, very closely related 

 to, if not identical with, P. intermedia from Bermuda. The 

 branchiae are described as numbering 20 or 21 in each lobe 

 but are represented as about half that number. The opercu- 

 lum of the other (No. 1,223) from 310 fathoms is not quite 

 accurately shown in figure 14, an important line through the 

 middle being omitted. The chitinous end is composed of two 

 parts; a lower saucer-shaped piece with raised center on which 

 rests a second cup-shaped piece with slightly convex top and 

 upright flaring rim. This bears some resemblance to the 

 chitinous opercular end found in species of Pomatostegus, but 

 the peduncle shows no trace of side appendages characteristic 

 of that genus. Unfortunately the specimen has become much 

 dried so that important characters cannot at present be deter- 

 mined with sufficient accuracy to reveal its generic position. 



PSETTDOVERMILIA Bush 1907. 

 This Journal, p. 54. 



Three species, two from Bermuda (Sjnrobranchus oecidenta- 

 lis Mcintosh, 1885, and an undescribed one) and one from the 

 southern coast of Patagonia ( Vermilia nigrojnleata Ehlers, 

 1900-01), have a small, more or less elongated bulbous opercu- 

 lum gradually expanding from a long, slender, rounded pedun- 

 cle becoming flattened and broadened distally, protected by a 

 dark horn-colored (appearing as black) chitinous end differing 

 in form ; no thoracic membrane, i. e., no free border along the 

 sides and posteriorly, but a well-developed 3-lobed collar; 7 

 fascicles of setae and 6 short tori in straight series on the 

 thorax ; simple regularly tapered setae, those on the abdomen 

 bent and broadly angular at base, hair-like along caudal region ; 

 uncini with numerous appressed teeth, the terminal one large 

 with notched or bifid end. No genus being known which 

 includes all of these characters, the name Pseudovermilia was 

 proposed with occidentalis Mcintosh as type. 



Branchial lobes more or less elongated, free, slightly spiral 

 in retraction, rachis-like with few branchiae on one side, not 

 extending the entire length, leaving a small tapered end. 

 Collar of about uniform depth, full, sometimes rolling, rounds 

 abruptly on a line with the first torus, meeting along the 

 median line of the thorax, with an incision or cleft on each 

 side dividing it into three about equal parts or lobes with 

 rounded ends. Setae nearly colorless, rather stiff, with com- 

 paratively short abruptly tapered blades, those in the collar 

 fascicle the shortest with a few capillary inferior ones. Un- 



