1 86 
BULLETIN OF THE UNITED STATES FISH COMMISSION. 
Family POLYNOIBjE. 
In the following descriptions I have followed Johnson’s (Proe. Calif. Acad. Science, vol. 1, No. 
5, )>. 165) diagnosis of the genera Polynoe and Harmothoe. 
HARMOTHOE Kinberg. 
Harmothoe polytricha Sehmarda. 
Polynoe polytricha Sclimarda, Neue Wirbellose Thiere, i,xr, p. 156. Ehlers, Annelids of the Blake, p. 19; pi. 10, figs. 9, 1th 
pi. 11, fig. 1. 
A number of much mutilated specimens, comprising only a few of the most anterior segments 
and destitute of elytra and dorsal cirri. From the form of the head, parapodia, and tentacles, I have 
identified them with this species. Ehlers figures only two eyes. These have, in addition, two lateral 
eyes much larger than the others, and on the side of the head, where they might easily be overlooked. 
Collected from stations 6079, 609], 6070, and Mayaguez Harbor. 
POLYNOE Sav. 
Polynoe brevisetosa Kinberg. 
Polynoebrevisetosa Johnson, Proc. Calif. Acad. Sci., vol. 1, No. 5, p. 1C7; pi. 6, fig. 21; pi. 7, figs. SI, 40, 40a; pi. 8, figs. 46, 40a. 
For references to earlier literature see p. 167 of Johnson’s paper. 
Collected from Puerto Real, Porto Rico, Caballo Blanco Reef, and Cuanica Bay. 
Polynoe branchiala, n. sp. 
Head roughly hexagonal (see fig. 5) with anterior eyes at outer angles. Basal joint of antenna 
extending a little beyond that of tentacles. Terminal joint of antennae reaching considerably beyond 
tentacles. Antennas and tentacles brown for over half their length, then a white band, then a second 
brown band, immediately under the white, swollen end. A delicate acute tip terminates antennas, 
tentacles, and all cirri. Peristomial cirri shaped like tentacles, with two brown bands, one about half 
way along their terminal joint, the other just beneath the swollen tip. Dorsal and anal cirri like 
peristomial, but with only one brown band. Palps long, conical, covered with fine, hair-like papillae. 
Twelve pairs of elytra. Surface of elytra. covered with minute tubercles, with a number of softer, 
larger, papillae near outer margin. Lateral and posterior margin densely fringed, with a longer tuft a 
little to one side of median plane of 
body on many of elytra. Elytra 
completely cover the body, and the 
tubercles and filaments give it an 
appearance of being covered with 
fine gray sand. 
Parapodium with dorsal bundle 
of rather long setae, toothed on both 
edges, and a ventral bundle of very 
stout, dark -brown setae (see fig. 6). 
Each of the latter ends in a blunt 
point and carries at a little distance 
from its end a transverse row of sharp 
teeth. One or two of these are 
much stouter than the rest (fig. 7).. 
Dorsally either an elytrophore or a 
very long dorsal cirrus (fig. 6). Ven- 
t rally a long narrow cirrus. Between each pair of parapodia, fastened to anterior wall of parapodium, 
to body wall, and a few to posterior wall of anterior parapodium are a number (ten or more) of 
finger-shaped processes (gills). (See fig. 6, hr.) These appear first between the third and fourth 
setigerous segments and are found throughout the greater part of body. Proboscis smooth with a 
row of dorsal and ventral papillse around distal opening. 
Length, 25 mm. ; width, 8 mm. Another specimen: Length, 20 mm.; width, 6 mm. 
Collected from Boqueron Bay, Ponce, station 6065. 
Figs. 5-7 . — Polynoe branchiala. Fig. 5, Head, x 9. Fig. 6, Parapodium, x 16; 
br, branchial. Fig. 7, Ventral seta, x 90. 
