50 University of California Publications in Zoology [Vol.18 



Comparison. — A single example of this species is in the Zoological 

 Museum of the University of California. It bears some resemblance 

 to Harmothoe triannulata Moore (1910). Especially the shape and 

 structure of the elytra, as far as can be judged from figures and 

 descriptions of J. P. Moore, have a great resemblance. There is also 

 some similarity in the setae of the two species. There are, how- 

 ever, some characteristic differences in the general shape of the body, 

 the shape of the prostomium, of the cirri, and of other structures. 

 The body of HarniotJioe triannulata, according to Moore's descrip- 

 tion, is deep, while in Harmothoe honitensis it is very much flattened 

 and thin dorso-ventrally. The palpi are comparatively short and 

 smooth in Harmothoe triannulata, approximately less than three 

 times the length of the prostomium; in Harmothoe 'bonitensis the 

 palpi are long (about five times the length of the prostomium) and 

 are covered with spirally arranged rows of spines. The dorsal cirri 

 of Harmothoe triannulata are covered with more conspicuous spines 

 resembling more the cirri of Harmothoe hirsuta, while in Harmothoe 

 bonitensis the spines are inconspicuous. In Harmothoe triannulata 

 the notosetae are "moderate in number, forming an inconspicuous, 

 depressed whorl"; in Harmothoe honitensis, they are very numerous, 

 forming a conspicuous whorl (see pi. 2, fig. 3). The setae are some- 

 what similar in shape in both Harmothoe triannulata and H. boni- 

 tensis, except the short, strongly curved notosetae of Harmothoe 

 honitensis (pi. 2, fig. 8) have no representatives in the figures for 

 Harmothoe triannulata given by Moore. The distal ends of the neu- 

 rosetae of Harmothoe triannulata are more slender and uniform in 

 diameter, while those of Harmothoe honitensis decrease in diameter 

 gradually toward the tips. 



Occurrence. — The specimen was found near Bonita Point at 

 Station D 5846 at lat. 89° N, in a depth of 45-50 fathoms in the col- 

 lection of the Survey of San Francisco Bay, made by the United 

 States Bureau of Fisheries, April 7, 1913. This description is pub- 

 lished by the kind permission of the Commission of the United States 

 Bureau of Fisheries. 



Harmothoe johnsoni sp. nov. 



PI. 2, figs. 12-17; pi. 3, figs. 18-21 

 Description. — The worm is flattened, but comparatively deep 

 dorso-ventrally, the depth of the body being 4 mm. The color in 

 the alcoholic specimen is gray. The dorsum is covered with large, 



