1161 
POLY CH2ETOUS ANNELIDS OF THE HAWAIIAN ISLANDS. 
enough preserved for description. Brain faintly bilobed, with dark-brown eyes. No trace of parapo- 
dial eyas. 
These specimens correspond with no species described by either Vejdovsky®, Apstein&, or Greet " c , 
but since sexual differences are considerable in this genus, and the specimens are poorly preserved, I 
have thought it best not to attempt to give them a new specific name. 
Collected at the surface at stations 3802 and 4037. 
Family NEREIDS. 
Genus NEREIS Cuvier. 
Nereis ( Platynereis ) tongabutensis McIntosh. 
Nereis tongdbutensis McIntosh, Report Challenger Expedition, vol. xii, p. 212, pi. xxxiv, figs. 7, 8, 9, pi. xvi A, 
figs. 5, 6, 7. 
One incomplete specimen from station 3968, 14 ^- 16 ^ fathoms, on coarse sand and coral, and 
another from Pearl Harbor, Oahu. The label reads “Taken from mass of sponge.” 
Nereis sp. 
Head broader than long (fig. 32), deeply cleft in front; anterior eyes much the larger, with lens 
facing anteriorly and outward; lens of posterior eyes facing dorsally. Antennse and tentacular cirri 
lost. Palps very large. 
First 8 parapodia with cirrus-like neuro- and notopodium. Dorsal cirrus about as long as para- 
podium, ventral cirrus nearly as long as dorsal. Behind somite 8 dorsal and ventral cirri become 
abruptly much shorter. Lobes of parapodia remain elongated for some 
somites, later shortening very decidedly. 
Two kinds of setae, one with short terminal joint having an apical hook 
with a “wing” and no lateral teeth, the other with very long, smooth, gently 
tapering terminal joint. 
In the absence of information concerning antennae, tentacular cirri, and 
jaw apparatus, I have not thought it wise to name this incomplete and possibly 
immature specimen. Width, including parapodia, 2 mm. ; length of 8 somites, 
3 mm. 
A single specimen, retaining only the anterior end, from station 3968, 
14J-16J fathoms, on bottom of coarse sand and coral. 
Nereis kobiensis McIntosh. 
Nereis kobiensis McIntosh, Report Challenger Expedition, vol. xii, p. 210, pi. xxxiv, figs. 3, 4, 5, 6, pi. xvi A, figs. 2, 3, 4. 
Heteronereid phase. McIntosh described the atokous form only. I have identified these speci- 
mens, all of which were in the epitokous condition, from the structure of the paragnathi, in which 
respects they agree exactly with McIntosh’ s description ; from the general character of the head, which 
agrees better with McIntosh’s description than with his figure, and from the presence of peculiar hook- 
like setae in the anterior, unmodified feet. The eyes were larger than in McIntosh’s specimens (a 
modification consequent on the sexual phase), and he does not mention a spinous edge on the concave 
border of the falcate setae. 
Head of female with large eyes (fig. 33), in contact with one another; eye (in alcohol) deep purple 
in color, with white “lens,” pointing anteriorly in anterior eye, upward and backward in posterior 
eye. Antennae shorter than head, tapering gently to blunt point. Palps large, with stout basal and 
terminal joints. In the drawing (fig. 33) these are somewhat foreshortened, as the head in all cases 
had been bent toward the ventral surface. Tentacular cirri usually had been lost. Longest of remain- 
ing ones extended to sixth setigerous somite. Prostomium with a dorsal median prolongation, extend- 
Fig. 32.— Head of Nereis 
sp., x 12.5. 
aVejdovsky, Zeit. f. Wiss.Zool., bd. 31, p.81. 
b Apstein, Die Alciopiden und Tomopteriden der Plankton Expedition, 1900. 
e Greef , Zeit. f. Wiss. Zool., bd. 32. 
