736 EEPOET OF COMMISSIONER OF FISH AND FISHERIES. [38] 



POTAMILLA Malmgren. 



PoTAMiLLA NEGLECTA Malmgren. 



(Pl. VII, Figs. 80-84.) 



Nordiaka Hafs-Annulater, p. 401, pl. xxvii, fig. 84. 1865. Auiiulata Polychaeta p. 



222. 1867. 



The specimens, wliicli we refer, without much doubt, to this species, 

 were pure white, very beautiful. The ventral sulcus, contrary to the 

 generic diagnosis, was continued on the dorsum, although seen with dif- 

 ficulty in alcoholic specimens. The branchial cirri were readily lost. 



Length, GO'"™. 



Diameter, 3"*™. 



•Length of branchiae, O-IS""™. 



Length of first eight segments, 9°^™. 



Dredged in 25 fathoms ; sand and shells. 



PoTAMiLLA RENiFORMis Malmgren, 



Sdbella reniformis Leuckart. ArcMv. f. Naturg., p. 183, pl. 3, fig. 8. 1849 {tesU 



Malmgren). 

 Sabella ocuU/era Leidy. Marine Invert. Fauna of R. I. and N. J., p. 13, pl. ad., figs. 

 55-61. 1855. 

 QUATREFAGES. Hist. Nat. des Ann^les, vol. ii, p. 461. 1865. 

 SahelJa aspersa Kr5yer. Bidrag till Sabellerne, p. 19. 1856. 

 Sahella oculata Kr<)Yer. Bidrag till Sabellerne, p. 22. 1856. 

 Sabella reniformis Sars. Christ, vid. Selsk. Forh., p. 123. 1861. 

 Sahella (Potamilla) 7-eniformia Marion-Bobretzsky. Annales des Sci. Nat., vol. 11, p. 



91, pl. xi, fig. 22. 1875. 

 Potamilla reniformis Malmgrex. AnnalataPolycli., p. 222, pl. xiv, fig. 77. 1867. 

 Potamilla oculifcra Vkrrill. Invert An. of Vin. Sound, p. 617, pl. xvii, fig. 86. 1874. 

 PotamiUa reniformis Verrill. Check-list. 



AVe collected but one specimen of this species. Dredged in 25 fathoms j 

 sand and shells. 



OTHONIA Johnston. 



Othonia Fabricii Johnston. 



Othonia Fabricii, JoHXSTON. Lond. Mag. Nat. Hist., vol. viii, 181, fig. 19 (teste Malm- 

 gren and CIapar(ide). 

 Fabricia Leidifi Verrill. Op. cit., p. 619. 1874. 



For the remaining synonomy of the species see Malmgren, Annulata 

 PolychsBta, p. 225. Also Clapar^de, Anuel. Chet. du Golfe de Naples, 

 p. 151. Malmgren's rejection of Fabricia seems to be valid, and Olapa- 

 rMe's claim for Othonia, as opposed to Amphicora, seems equally sound ; 

 but his retention of Fabricia is not desirable. On decaying wood, near 

 high water mark. 



