Zool.-Vol. I.] JOHNSON— PACIFIC COAST ANNELIDS. l8l 



as infesting Aster ina mineata is this species I have no means 

 of knowing. 



Harmothoe imbricata (L.) Malmgren. 

 Plate VII, Fig. 37. 



This interesting species occurs all along our coast as 

 far south at least as San Diego. The specimens from 

 the southern parts of its range are small and few. North- 

 ward it increases in size. None of the numerous examples 

 I have taken at Pacific Grove are so large as some from 

 Humboldt Bay and from Puget Sound. Again, all the west 

 coast specimens are dwarfs in comparison with Arctic ex- 

 amples. 



At Pacific Grove it occurs under stones and among eel- 

 grass, near low-water mark. It is extremely varied in its 

 coloration, the tints ranging from pink to dark iron-gray. 

 The first pair of elytra are very frequently a dull, opaque 

 white, contrasting strongly with the general dark coloration, 

 and giving the animal a very bizarre appearance, as having 

 two great dull-white eyes. 



I have no hesitation in placing my specimens under 

 the name Harmothoe imbricata, although I have only fig- 

 ures and descriptions of the latter for comparison. The 

 setse correspond exactly; the prostomium (fig. 37) has the 

 peculiar location of the eyes noted in H. imbricata — the 

 anterior pair being placed laterally and actually under the 

 bulging lobes of the prostomium. The relative length of 

 tentacle and antennas is almost precisely what it is in von 

 Marenzeller's 1 figure of a specimen from Japan; but the 

 difference in their lengths is not nearly so great as in 

 Malmgren's 2 figure of the Skandinavian variety. 



1 Sudjapanische Anneliden I. Denkschr, d. Wiener Akad. Math. Naturwiss, Classe, Bd. 

 XII, p. 117, Taf. II, fig. 1. 



2 Nordiska Hafs-Annulater; Ofversigt K. Vetensk-Akad, Forhandl., Bd. XXII (1866), 

 Taf. ix, fig. 8a. 



