38 ALLAN HANCOCK PACIFIC EXPEDITIONS VOL. 15 



A small, dorsal ligule (fig. 3) representing the beginning of the 

 notopodium, is first present on segment 59. It is uniformly developed 

 through about 8 segments, or to the end of the piece available for study. 

 It is supported by a slender, yellow notoaciculum. Neurosetae are en- 

 tirely composite, slender and spinigerous. 



The original and only known account was based partly on what I 

 take to be an epitokous individual, since it was taken at night, while 

 swimming at the surface. It measured 20 inches long and nearly half an 

 inch wide. This specimen is now supposedly deposited in the United 

 States National Museum (I have been unable to examine it). I sug- 

 gest that it is perhaps only a posterior (or also median) region of an 

 individual that was much longer when complete, and that the anterior 

 uniramous region was altogether lacking. Verrill presumed it to be 

 entire since he stated (1885b, p. 437) that the first parapodia were 

 biramous. According to Verrill's illustration (1885a, pi. 42, fig. 185) 

 at least 90 segments may be involved in the transitional region, or those 

 segments in which notopodia increase gradually in size; the posterior 

 region consists of many more segments. What Verrill described as 

 "head. . obtusely rounded in front, smooth," was perhaps only the 

 healed-over segment of a transitional segment at which autotomy had 

 occurred. However, another individual, possibly the same as that on 

 which the present account is based, was used by Verrill, since the pro- 

 boscis was partly described. It was said to be armed with a ring of 

 paragnaths including a pair of macrognaths and dorsal and ventral arcs 

 of micrognaths. The proximal surface was said to appear granular under 

 a hand lens, hence covered over with proboscidial organs; chevrons 

 were not noted ; I believe they are absent. 



Distribution. — O. gigantea Verrill is known only from Rhode Island 

 in shallow water. 



Ophioglycera eximia (Ehlers), new combination 



Goniada eximia Ehlers, 1901, pp. 157-159, pi. 20, figs. 7-17 (in part) ; 



Monro, 1936, p. 141 ; Fauvel, 1941, p. 285. 

 Not Benham, 1909, p. 80, or Monro, 1937, p. 21. 



This species agrees with the genotype, O. gigantea (above) in lack- 

 ing proboscidial chevrons and has similar bifurcated lobes in neuropodia. 

 Among the 3 specimens which Ehlers (1901, p. 157) had, only 2 belong 

 here. They come from Santa Cruz, shore, and Tribune Bank, 25 fms. 

 The other, smallest specimen, from Cabo Espiritu Sound, is a Goniada 

 species, since it has chevrons (see Goniada jalklandica, above). 



