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



POTAMILLA Malmgren. 



PoTAMiLLA NEaLECTA Malmgren, 



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



Nordiska Hafs-Annulater, p. 401, jjI. xxvii, fig. 84. 1865. Aunulata Polychseta p. 



222. 1867. 



The specimens, "which 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, G0°>'^. 



Diameter, S"*™. 



Length of branchiae, 9-13™™. 



Length of first eight segments, 9"™. 



Dredged in 25 fathoms ; sand and sheila. 



PoTAMiLLA RENiFOEMis Malmgren. 



Sdbella reniformis Leuckakt. ArcMv. f. Naturg., p. 183, pi. 3, fig. 6. 1849 {te»te 



Malmgren). 

 Sahella oculifera Leidy. Marine Invert. Fauna of R. I. and N. J., p. 13, pi. xJ., figs. 

 55-61. 1855. 

 QUATREFAGES. Hist. Nat. dcs Annies, vol. ii, p. 461. 1866. 

 Sahella asperaa Kroyer. Bidrag till Sabellerne, p. 19. 1856. 

 Sabella oculata KuoYER. Bidrag till Sabellerne, p. 22. 1856. 

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

 Sahella {PotamiUa) reniformis Marion-Bobretzsky. Annales des Sci.Nat, vol.ii, p. 



91, pi. xi, lig. 22. 1875. 

 PotamiUa reniformis Mai.mgren. Ann ulata Poly cb., p. 222, pi. xiv, fi^. 77. 1867. 

 PotamiUa oculifera Verrill. Invert An. of Vin. Sound, p. 617, pi. xvii^ fig. 86. 1874. 

 PotamiUa reniformis Verrill. Check-list. 



We collected but one specimen of this species. Dredge'l in 26 fatiioms j 

 sand and shells. 



OTHONIA Johnston. 



Othonia Fabricii Johnston. 



Othonia Fahricii, Johnstox. Lond. Mag. Nat, Hist., vol. vlii, 181, fig. 19 {te*t« Malm- 

 gren and Claparfede). 

 Fahricia Leidyi Verrill. Op. cit., p. 619. 1874. 



For the remaining synonomy of the species see Malmgreji, Annulate 

 Polychaeta, p. 225. Also Clapar^de, Annel. Chet. du Golfe de Naples, 

 p. 151. Malmgren's rejection of Fabricia seems to be valid, .\nd Clapa- 

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

 but his retention of Fabricia is not desirable. On decaying wcK.>d, near 

 high water mark. 



