POLYCHJETOUS ANNELIDS OF THE HAWAIIAN ISLANDS. 
1165 
Genus HERMODICE Kinberg. 
Hermodice pennata, new species. 
Head roughly quadrangular, anterior edge a trifle broader than posterior (fig. 41). The four large, 
light brown eyes and the thick median tentacle occupy nearly the whole dorsal surface of head. Ante- 
rior eyes a little larger than posterior, all prominent on dorsal view. Median tentacle relatively thick, 
situated about in center of rectangle, of which the eyes form the corners, tapering gradually to apex, 
which extends beyond oral lobe. Ends of tentacles and of cirri near the head looked as if either a 
collection of granular debris had adhered to them, or as if a terminal dilation, originally present, had 
broken into fragments during the preservation. Inner paired tentacles in form of an elongated cone, 
extending as far as base of median. Outer paired tentacles about same size as unpaired. Oral lobes 
prominent, rounded. 
Caruncle in two parts. A short, triangular anterior portion, with transverse markings, its rounded 
base touching the median tentacle and covering over the anterior pair of eyes. Below and behind this 
the much broader posterior portion extending laterally so as to cover the whole dorsal surface of the 
first three somites between the parapodia. Greatest width of caruncle about middle of somite 3, taper- 
ing from there to end at posterior edge of somite 4. Caruncle composed 
of a central vertical lamella, and on either side lateral lamellae, also verti- 
cal. Apparently there are typically 7 of these on a side. In the specimen 
figured the first one on the right had been lost, and the fifth on the left 
broken off, not far from the base. Those of the two sides are arranged 
in an alternating fashion. Along each runs an axial band of pink pigment 
(in alcoholic material) with numerous branches on either side, giving 
the whole caruncle a feathery appearance. 
Dorsal cirri with stout basal and slender conical terminal portion; 
ventral similar in form, but smaller; first ventral cirrus largest, those 
behind it diminishing gradually in size toward posterior end. 
Gills on first somite as about six rounded lobes, arising from a com- 
mon, rather broad, base. By segment 10, the number of these lobes has Pl(} 41 ^_ Head of Hermodice 
doubled. All gills with accumulation of pinkish brown pigment on pennata, x 12. 
dorsal surface, apex colorless. . 
Dorsal surface of each somite with numerous longitudinal pink bands extending across from one 
boundary to the other. Some are single, others branch, and others are incomplete, extending only a 
part of the way across. 
Setfe of dorsal bundle long, very finely pointed ; those of ventral bundle shorter, stouter, with fine 
denticulations along one edge. 
Collected at station 4162, 24 fathoms, on a coral bottom. Type (no. 5209, U. S. National Museum), 
an incomplete specimen; length of head and first 15 anterior somites, 14 mm. ; greatest width, 5 mm. 
Family EUNICID^. 
Genus EUNICE Cuvier. 
Eunice siciliensis Grube. 
' Eunice siciliensis Ehlers, Die Borstenwiirmer, p. 353, pi. 16, 1864. (See Ehlers’s paper for references to earlier 
literature.) 
The wide distribution of this species is noteworthy. Described originally from a European locality, 
it has been collected at Porto Rico«, and now appears in this collection from the Sandwich Islands. 
Collected at station 3849, at a depth of 73-43 fathoms, on a bottom of broken shells and corals; at sta- 
tion 3876, 28-43 fathoms, on a bottom of coarse sand, and at station 3940, 59-70 fathoms, on a bottom 
of sand and broken shells. 
a Treadwell— Polychsetous Annelids of Porto Rico, Bull. U. S. Fish Commission, vol. xx, 1900, p. 196. 
