278 Bidletin Vanderbilt Marine Miiseum, Vol. VII 



Petrolisthes cinctipes, Ortmann, A. E., Zool. Jahrb., f. Syst. 

 1897, Bd. II, p. 278.— Holmes, S. J., Occas. Papers Calif. 

 Acad. Sci. 1900, vol. VII, p. 107.— Rathbun, M. J., Harriman 

 Alaska Exped. Crustacea, Smithsonian Publ., 1904, vol. X, 

 p. 168. — Baker, C. F., Rept. Laguna Marine Labr. Calif., 

 1912, vol. I, p. 102.— SCHMITT, W. S., Univ. Calif. Publ. 

 Zool., 1921, vol. 23, pi. 32, fig. 1 and text fig. 113.— BoONE, 

 L., Zoologica, N. Y. Zool. Soc, 1931, vol. XIV, art. I, p. 49, 

 fig. 15. 



Petrolisthes eriomerus, SxiMPSON, W., Ann. Lye. Nat. Hist. New- 

 York, 1871, vol. X, p. 119. — LOCKINGTON, W. S., loc. cit., 

 1878, p. 397.— Holmes, S. J., loc. cit., 1900, p. 108, pi. 1, 

 fig. 15 (cheliped only). — ScHMiTT, W. S., loc. cit., 1921, p. 

 181, fig. 144 (after Holmes). — BoONE, L., loc. cit, 1931 A, 

 p. 52, fig. 16, loc. cit. 1931 B, p. 154, fig. 8. 



Porcellana valida, Dana, J. D., in Wilkes, C, U. S. Explor. Ex- 

 ped., 1852, vol. XIII, pt. I, p. 415, Atlas, pi. 26, fig. 5. 



Petrolisthes validus, HENDERSON, J. R., Rept. Voy. H.M.S. "Chal- 

 lenger," Zool., 1888, Anomura, p. 105. 



CIRRIPEDIA 



These three species of barnacles are presented because of their 

 incidence on four species of deep water crabs, one deep water 

 sea urchin and the flotsam pen of a very rare cephalopod mollusk, 

 which are discussed elsewhere in this bulletin. Two of these 

 barnacles are pedunculate, — Lepas anserifera Linne, seated on 

 the pen of the little known squid, Sepia smithi Hoyle, a mollusk 

 obtained by the "Challenger" off Papua, New Guinea, and not 

 reported since; fifty odd specimens of this barnacle being taken 

 by the "Ara" in the Indian Ocean. The second pedunculate bar- 

 nacle is the East American deep water species, Poecilasma inae- 

 quilaterale Pilsbry, of which over a hundred specimens were 

 taken, seated on four species of crabs. Cancer borealis Stimpson, 

 first reported as a commensal host for this barnacle by the writer 

 in 1930, from specimens taken by the "Ara" and the two rare 

 spider crabs Rochinia crassa (A. Milne Edwards) and Anasimus 



