30 



BULLETIN 104^ UNITED STATES NATIONAL MUSEUM. 



south of the latitude of Cape Cod. It occurs at scattered stations 

 from latitude 40° N. southward off our coast at several stations in the 

 Gulf of Mexico and Caribbean Sea, and I have had material from 

 D2761 off Bahia, Brazil. The stations range in depth from 93 to 

 2,069 fathoms and bottom temperatures from 37.7° to 42.3° F. 



Although these bottom temperatures are not high, the distribution 

 of this species is much more tropical in its records than that of B. 

 aiiformis, which apparently does not get into the Gulf of Mexico or 

 the Caribbean Sea. 



Bathysiphon rufus — material examined. 



BATHYSIPHON MINUTA Pearcey. 



Bathysiphon minuta Pearcey, Millport Marine Biol. Stat, ("omm., vol. 1. 1900, 

 p. 39, pi. 2, figs. 1-5. — Heron-Allen and Earland, Proc. Roy. Irish Acad., 

 vol. 31. pt. ()4, 1913, p. 38. 



The original description was as follows: 



Test a long, thin, veiy narrow, graduallj^ tapering tube, with finely arenaceous 

 walls consisting of fine mineral particles loosely cemented to a chitinous lining, 

 when dried or mounted in balsam, the walls of the tube collapse at intervals. 

 Color light gray to Avhite. 



Distnhution.— The author of this species described it from the 

 English coast and it has not been recorded elsew^here, 



bathysiphon ARGENTEUS Heron-Allen and Earland. 



Plate 12, figs. 1-3. 



Bathysiphon argenteus Heron-Allen and Earland, Proc. Roy. Irish Acad., vol. 

 31, pt. G4, 1913, p. 38, pi. 3, figs. 1-3; Trans. Linn. Soc. London, vol. U, 

 pt. 13, Mar. 1916, p. 218, 



The original description is as follows : 



Test free, minute, tubular, of a silvery lustre when A^iewed as an opaque 

 object, flexible when living, rather brittle in the dry condition. Consisting of very 

 thin chitinous tube of nearly even diameter throughout, but sometimes exhibiting 

 a slight increase in diameter with growth. The tube is open at bottom extremities 



