"^I's'Jl" ] PROCEEDINGS OF THE NATIONAL MUSEUM. 285 



Buccal somite as long as following three somites, ventral swelling pos- 

 terior to mouth consi)icuoua. Antenn:e jointed, almost nionilifurm; 

 median one longest, reaching almost to fourth setigerous somite; ten- 

 tacular cirri half as long as buccal somite, jointed; anal cirri jointed, 

 twice as long as tentacular cirri. Branchiie pectiiuite, beginning on 

 liftli setigerous somite as a simple lilament, rapidly increasing and 

 meeting in an arch over the back with as many as twenty posterior 

 branches; decreasing less rapidly, small and with few brandies from 

 about the thirtieth somite to the end of the body. Parapodia not 

 prominent ; dorsal cirrus long ; ventral cirrus shorter, with swollen 

 base; seta' light colored, dorsal ones acute, tlattened ; ventral ones 

 with a triangular tooth below the curved apex of outer joint; the 

 (faufjtshaped seUv have the terminal teeth i)rolonged. Jaws light 

 with dark borders ; supports rounded ; i)inchers blunt; dental plates 

 with eight teeth on right and live on left ; unpaired plate on left side 

 with eight teeth; posterior pair of paragnaths with each nine teeth; 

 anterior pair smooth, dark ; outer i)air s<iuare, with one tooth. Gen- 

 eral color golden reddish ; white spot on median line of each setigerous 

 somite; antenna', tentacular cirri, and anal cirri white with red rings or 

 transverse streaks. Eyes blue between outer and middle antennte. 

 Length up to 9 centimetres; diameter, 5 millimetres. Swims actively 

 with spiral motion. 



Not uncommon on sponges, etc., in li to 3 fathoms in sheltered sounds. 

 The young were also found cast up on the Fort beach, after storms, upon 

 seaweeds. 



This species appears to be closely related to IJ. articulata Ehlers. 



DIOPATRA And. ami Edw. 

 Diopatra cuprea And. ct Edw. 



Bosc (Xereis cuprea.) Hist. Nat. des Vers., vol. 1, 2d ed., pp. 163-16."), PI. xii, Figs. 



1-4. 

 Ql'AriJKFAGE.s [Kiinice cuprea). Hiat. Nat. des Annclo.«i, vol. 1, p. ;}:U. 

 Ci.\VA.ni:vE{lJ. iicajiolitana). Auuel. Cbiet. Oolfcde Naples, pp. l'Ji-1'27, PI. vi, Fij;. 4. 

 Vekkill. Invert. An. Vineyard Sd., pp. 346-593, Pi. xiu, Figs. 67, OS. 

 Verhill. Notes on Nat. Hi.st. of Ft. Macon (Coues and Yarrow), Proc. Acad. Nat. 



Sci., Phil., 1H78, pp. 200,300. 

 Wehstkk. Annel. Cliii-t., Provincetown, p. *270. 

 Wehstku. Annel. Cbaet. Virginian Coast, p. 63. 

 Ehlkks (D./rainlia). Die Neubildungdes Kopfes bei poiycba-ten Auneliden. Erlan- 



gen,'l'^t)0. 



This widely distributed Annelid, .so common upon the northern coast 

 of the Eastern States, was first found at Charleston by l>osc, and later 

 at Beaufort, Xorth Carolina, by Coues and Yarrow. From the descrip- 

 tion given by Ehlers of the specimens ho received from Charleston and 

 among which he found and studied a case of regeneration of the head 

 and anterior somites it seems undouV)tedly true that he had specimens 

 of Bosc's yereis vuprea, though he give.s the new nain(» Diojxitra frarjUis. 



