connected by a deep web and have broad ter- 

 minal expansions modified for secretion of an 

 external shell of egg case when mature. The left 

 third arm of the male is hectocotylized, autono- 

 mous, and coiled up in a sac beneath the left eye. 



The octopods were first noted inside the 

 branchial cavity of one of the aggregate salps, 

 attached by their tentacles to that individual's 

 pharynx wall; however, they both left their hosts 

 during our capture of the salps in quart jars. We 

 found only one octopod per salp chain, though the 

 salps had many hyperiid amphipods (Vibilia 

 armata Bovallius 1887), cyclopoid copepods 

 (Sappharina angusta Dana 1852), and fish in 

 association. We found no morphological damage 

 to the individual aggregate salps which had 

 hosted the octopods. 



The association of juvenile octopods with salp 

 aggregates may afford a source of food (com- 

 mensal amphipods), flotation, transportation, 

 and/or camouflage to the octopods. Examination 

 of Formalin'-preserved gut contents from these 

 octopods was inconclusive, however, since 

 neither octopod had fed recently and only un- 

 identifiable, residual solids remained in the gut. 

 It is improbable that the octopod was seeking 

 protection by attaching to the salp chain, since 

 moving out from the host was an immediate re- 

 action to in situ visual stimuli and/or local per- 

 turbations. 



We thank C. E. Lea and G. J. Denoux for their 

 identification of the octopods and copepods, 

 respectively. Identification of the octopods was 

 based on generic characteristics described by 

 Voss (1956). Salps were classified as Pegea soda 

 (Bosc 1802) as described by Madin and Harbison 

 (1978). Amphipod identification was based on 

 body shape, eye structure, and character of 

 pereiopods as described by Bowman and Gruner 

 (1973) for genus and Dick (1970) for species. 

 Copepods were identified by body shape, seg- 

 mentation, and appendage characteristics as 

 described by Owre and Foyo (1967). Research 

 scuba operations were supported by the National 

 Science Foundation, grant OCE78-22481. 



Literature Cited 



Bacescu, M. 



1973. A new case of commensalism in the Red Sea: the 

 myside Idiomysis tsumamali n. sp. with the coelen- 



1 Reference to trade names does not imply endorsement by 

 the National Marine Fisheries Service, NOAA. 



terata M contact us and Cassiopea. Rev. Roum. Biol. 

 Ser. Zool. 18:3-7. 

 Barham, E. G., and G. V. PlCKWELL. 



1969. The giant isopod Anuropsus: A scyphozoan 

 symbiont. Deep-Sea Res. 16:525-529. 



Bowman, T. E., and H.-E. Gruner. 



1973. The families and genera of Hyperiidea (Crustacea: 

 Amphipoda). Smithson. Contrib. Zool. 146, 164 p. 



Bruce, A. J. 



1972. An association between a pontoniinid shrimp and a 

 rhizostomatous scyphozoan. Crustaceana 23:300-302. 



Dick, R. I. 



1970. Hyperiidea (Crustacea: Amphipoda). Keys to the 

 South African genera and species, and a distribution 

 list. Ann. S. Afr. Mus. 57:25-86. 



Fernando, A. S., and K. Ramamoorthi. 



1974. Rare occurrence of Conchoderma virgatum 

 (Spengler, 1790) (Cirripedia— Lepadomorpha) on a 

 scyphozoan medusa. Curr. Sci. (Bangalore) 43:126. 



Harbison, G. R., D. C. Biggs, and L. P. Madin. 



1977. The associations of Amphipoda Hyperiidea with 

 gelatinous zooplankton— II. Associations with Cnidaria, 

 Ctenophora and Radiolaria. Deep-Sea Res. 24:465- 

 488. 



Heron, A. C. 



1973. A specialized predator-prey relationship between 

 the copepod Sapphirina angusta and the pelagic 

 tunicate Thalia democratic. J. Mar. Biol. Assoc. U.K. 

 53:429-435. 



Herrnkind, W., J. Hlusky, and P. Kanciruk. 



1976. A further note on phyllosoma larvae associated 

 with medusae. Bull. Mar. Sci. 26:110-112. 



Janssen, J., and G. R. Harbison. 



In press. Fish in salps: The association of squaretails 

 (Tetrogonurus spp.) with pelagic tunicates. J. Mar. 

 Biol. Assoc. U.K. 

 Laval, P. 



1980. Hyperiid amphipods as crustacean parasitoids 

 associated with gelatinous zooplankton. Oceanogr. 

 Mar. Biol. Annu. Rev. 18:11-56. 

 Madin, L. P.. and G. R. Harbison. 



1977. The association of Amphipoda Hyperiidea with 

 gelatinous zooplankton — I. Associations with Salpidae. 

 Deep-Sea Res. 24:449-463. 



1978. Salps of the genus Pegea Savigny 1816 (Tunicata: 

 Thalicea). Bull. Mar. Sci. 28:335-344. 



Mansueti, R. 



1963. Symbiotic behaviors between small fishes and jelly 

 fishes, with new data on that between the stromateid 

 Pepritus alepidotus, and the scyphomedusa, Ckysaora 

 quinquecirrha. Copeia 1963:40-80. 

 Owre, H. B., and M. Foyo. 



1967. Copepods of the Florida Current. Fauna Caribaea; 

 Number 1. Crustacea, Part 1: Copepea. Inst. Mar. Sci., 

 Univ. Miami, 137 p. 

 Shojim, Y. 



1963. Scyllariid phyllosomas' habit of accompanying the 

 jelly-fish. Bull. Jpn. Soc. Sci. Fish. 29:349-353. 

 Thomas, L. R. 



1963. Phyllosoma larvae associated with medusae. 

 Nature (Lond.) 198:208. 

 Trott, L. B. 



1972. The portunid crab Charybdis feriatus (Linnaeus) 

 commensal with the scyphozoan jellyfish Stomolophus 

 nomurai (Kishinouye) in Hong Kong. Crustaceana 

 23:305-306. 



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