THE POLYCHASTOUS ANNELIDS OE PORTO RICO. 
209 
PROTULIDES Webster. 
Protulides elegans Webster. 
Prutulides elegans Webster, Annelida from Bermuda, p. 325; Andrews, Annelida from Beaufort, p. 29!). 
These agree with Webster’s description in ever)' respect except color. The basal portion of the 
branchiae is purple to beyond their uniting membrane. The dorsal surface of each filament is light 
purple. An occasional pinna deep purple. About 25 eye-spots on either side of each filament, extend- 
ing over half of their free extremity. General body color light brown. A ventral dark band, about 
one-fourth of the whole width of body, extends from extreme posterior end to about the fifth or sixth 
thoracic segment. 
From Guanica Bay, Ensenada Honda (Culebra), Mayaguez, station 0085, reef at Ponce, Caballo 
Blanco Reef. 
DASYCHONE Sars. 
Dasychone ponce, n. sp. 
This is apparently closely related to D. conspersci (Elders, Annelids of the Blake, p. 260, pi. 54, 
figs. 1-6), but differs from it in the greater number of branchise, the lack of regularity in shape and 
distribution of color spots, and in absence of a ventral 
compressed area. Gills very much coiled, the most 
ventrally placed filament very short, scarcely 1 mm. 
long; following filaments increase gradually in length up 
to the tenth, which is as long as the rest of the filaments, 
approximately 13 mm. long; 42 filaments on a side. In- 
closed by the branchise are the two tentacles, about 5 
mm. long. Branchise united by a basal membrane for 2 
mm. of their length. Basal portion of branchia where 
united by the membrane, brown; membrane itself, white. 
Free portion of branchia white, crossed by dark bands; 
13 to 15 eye-spots on each filament; a variable number of 
dorsal appendices on each filament. Some individuals 
have two pairs of these dorsal appendices much larger 
than the rest. This does not appear in all specimens. 
Terminal portion of filament smooth. Collar with two 
triangular lobes projecting anteriorly on ventral surface 
(fig. 76). Inner surface of these lobes marked with 
irregular blotches of brown. The general color of collar 
brown, with white border. Collar incomplete dorsally, 
ending by rounded lobe just above dorsal seta bundle. Body rounded dorsally, flattened ventrally. 
General color light brown, with numerous irregularly arranged dark-brown blotches. A dark-brown 
patch along the ventral surface of the abdomen, in the center of which the light fiecal groove is 
prominent. (Fig. 76 fg.) 
Thorax with ventral shields (fig. 76). First the widest and narrowing gradually to third; from 
here, of uniform width backward. First segment with setae placed far dorsally. Uncinate sette 
appear first on second segment, where the row of these is longest, and gradually narrowing to eighth. 
Uncinate setae become dorsally placed on ninth segment and continue to posterior end of body. A 
large irregularly shaped brown spot between the uncinate and the capillary setae on each segment. 
Capillary setae long, with expansion near end (fig. 77). Uncini stout, with large terminal and smaller 
dorsal tooth (fig. 78). Length of body, 30 mm. Width of thorax, 5 mm. Body nearly of uniform 
width throughout, tapering rapidly at posterior end. Tube very thin, delicate, paper-like in texture; 
color, light brown. At upper end covered with fine gray mud. 
Collected from Ponce, Boqueron Bay, Arroyo, Playa de Ponce Reef, Mayaguez, reef near Ponce. 
Figs. 76-78, Dasychone ponce. — Fig. 7G. Anterior por- 
tion, x 5; fg., fseeal groove. Fig. 77, Capillary 
seta, x 50. Fig. 78, Uncinate seta, x 143. 
2d— F. 0. B. 1900—14 
